AMETEK 1746 LDT Interface Card • User guide • Download PDF for free and without registration! Manuals Directory ManualsDir.com - online owner manuals library. AMETEK manuals. 1746 LDT Interface Card. Download AMETEK 1746 LDT Interface Card User Manual – Download. AMETEK 1746 LDT Interface. AMETEK Programmable Power, Inc., a Division of AMETEK, Inc., is a global leader in the design and manufacture of precision, programmable power supplies for R&D, test and measurement, process control, power bus simulation and power conditioning applications across diverse industrial.
1 JEMSTAR Digital Multifunction Electricity Meter User Manual Publication Rev. S August 2010 AMETEK Power Instruments Tel: (585) N. Union Street Fax: (585) Rochester, New York Web: 2 Important Safety Notice Installation, operation, and maintenance of this product can present potentially hazardous conditions if safety procedures are not followed. To ensure that this product is used safely, it is important that you: Review, understand, and observe all safety notices and recommendations within this manual. Review your company safety procedures for meter installation and service.
Hazardous voltages are present during normal servicing of this device that can cause severe injury or death. These voltages are present throughout the utility s potential transformer (PT) and current transformer (CT) circuits, and the meter s connection terminals. Only qualified, properly trained personnel should perform installation and servicing on this equipment AMETEK Inc., all rights reserved. Scientific Columbus is a trademark of AMETEK, Inc. JEM is a registered trademark of AMETEK, Inc. MicroJoule II is a registered trademark of AMETEK, Inc.
SC-30 is a registered trademark of AMETEK, Inc. JEMStar, JEMWare, JEMRead are trademarks of AMETEK, Inc. MV-90 is a trademark of Itron Energy Information Systems, Inc. Windows is a trademark of Microsoft Corp. MODBUS is a trademark of Schneider Systems, Inc. Quantum is a registered trademark of Schlumberger Industries, Inc. 30 JEMStar User Manual A-Base Mounting A-Base Adapter Mounting Dimensions (With S-base meter installed, total depth in front of mounting panel is ) IMPORTANT: When installing the meter locking ring on the A-base adapter, be sure that the ground tab on the right side of the adapter is securely fitted under the ring.
Ground tab Ring mounted correctly with tab underneath 24 31 Chapter 2 - Installation Switchboard Case Mounting READ RESET 2.13 Switchboard Case Meter Dimensions Panel Cutout Dimensions DIA. (4 Places) C L 8.63 C L B 25 32 JEMStar User Manual WIRING DIAGRAMS Form 5S 2 Element 3 Wire Delta C C A A C A Aux. B (or N) 3 Phase 3 Wire Delta c c a a L I N E C B A L O A D Front View A 26 33 Chapter 2 - Installation 27 34 JEMStar User Manual Form 8S 3 Element 4 Wire Delta Aux. A B C A B C N A A b C C N B A b C 3 PHASE 4 WIRE DELTA A L I N E B C L O A D N Front View 28 35 Chapter 2 - Installation Form 9S 3 Element 4 Wire Wye Aux. A B C A B C N C N A a a b b c c B 3 Phase 4 Wire Wye A L I N E B C L O A D N Front View 29 36 JEMStar User Manual 30 37 Chapter 2 - Installation 31 38 JEMStar User Manual FORM 8A/9A 3 ELEMENT 4 WIRE WYE AUX. C C A B N A B 3 PHASE 4 WIRE WYE A B C N A B C A L I N E B C N L O A D FRONT VIEW 32 39 Chapter 2 - Installation B 3 PHASE 4 WIRE DELTA A C N AUX. A B C N L I N E L O A D FORM 8A/9A 3 ELEMENT 4 WIRE DELTA A A A A B B B B C C C C N FRONT VIEW 33 40 JEMStar User Manual 34 41 Chapter 2 - Installation 35 42 JEMStar User Manual Form 8R Wiring Diagram 4-wire Delta 36 43 Chapter 2 - Installation 37 44 JEMStar User Manual 38 45 Chapter 2 - Installation EXTERNAL CONNECTIONS JEMStar uses industry-standard power connector configurations consistent with the standards listed in the Specifications section.
JEMStar Switchboard Case power connectors will accept 12 gauge solid wire or a ring or spade lug. Connections that are intended to be made and broken during normal meter operation (e.g. Temporary data connections, Test Pulse pickup, etc.) are accessible without exposing the operator to live power terminals or conductors. Other JEMStar electrical connections (e.g. Contact Outputs, Contact Inputs, Modem) are brought outside the meter as pigtail leads (S-base, A-base) of an appropriate wire gauge and insulation to maintain the electrical requirements of ANSI standards. The Switchboard model provides user connections on rearmounted terminal blocks.
Reading the Wire Colors All output wires are individually color coded to simplify identification of each signal. Each wire can have one, two, or three colors. The sequence of colors is read as follows: Body insulation is the first color Heavy stripe is the second color Thin tracer stripe is the third color Body/Heavy Stripe/Tracer Stripe Grounding Recommendations It is important to ensure that all conductive outer surfaces of the JEMStar meter are properly grounded. The S-base and A-base models are constructed with plastic housings, so this is not a concern, however the Switchboard case is steel and must have a good protective ground. Supply an adequate, lowimpedance ground to the JEMStar case and verify with an ohmmeter. Be sure not to make grounding connections on painted surfaces.
All signal inputs and outputs that will be wired for extended distances from the JEMStar should be shielded cables, with the shield grounded at one end. The instrument PT and CT commons should be grounded consistent with your company s wiring procedures. Signal Inputs Voltage Inputs The meter will operate continuously at any voltage within the nominal range of volts while still meeting all operational specifications. The JEMStar voltage inputs have a burden of less than 0.5 VA each. This does not include the Auxiliary Power input, which requires less than 15 VA. 39 46 JEMStar User Manual Current inputs The JEMStar is configured at manufacture for one of the standard current Class ranges listed in the Specifications section. Each JEMStar current input can withstand a continuous overload of 1.5 times the Class current, or 20 times the Class current for 0.5 second without damage or permanent change in registration.
The JEMStar current inputs have a burden of less than 0.5 VA each. Auxiliary Power For S-Base and A-base models, Auxiliary Power is connected internally to the Phase A voltage input. No separate connection is required. The Switchboard models are designed to obtain Auxiliary Power from a separate connection.
This can be either AC or DC voltage. Separate AC Auxiliary Power AC Auxiliary Power connections are connected to screw terminals on the rear of the case. Refer to the Switchboard wiring diagrams shown just prior to this section.
In this method, the Aux. Power input will operate from 55 to 530 VAC, and is non-polarity sensitive. Separate DC Auxiliary Power DC Auxiliary Power connections use the same terminals as the AC Aux.
In this method, the Aux. Power input will operate from 90 to 250 VDC, and is non-polarity sensitive. Contact Inputs JEMStar can include an optional feature that consists of two Form A (N.O.) contact inputs. Each input can be configured to perform any one of the following functions: Input to a pulse counter that is recorded as a channel in Load Profile. Each transition (make or break) is counted as a pulse. Interval synchronization pulse.
Each 'make' causes the Demand Interval and / or Load Profile (if so configured) to be re-synchronized. TOU Rate Override: Each 'make' will cause the present Time of Use rate to change to a userconfigured override billing rate. Status Input: Each 'make/break' of an external contact can be monitored by the meter and will be logged in the Load Profile data report. Totalization input: Each 'make' will be cause a configurable amount of energy to be added to a Totalization register's accumulated total.
NOTE: You may encounter excessive serial communication errors if the JEMStar meter is configured to use Totalization inputs AND the meter is receiving pulses at a high rate. While the JEMStar communication protocol uses error checking to prevent data corruption, communication times may be extended. To temporarily stop the interference, disconnect the contact inputs until communication is complete. JEMStar does not provide a wetting voltage for the contact inputs; the user must provide an external wetting source. The external source must have the following characteristics: Minimum ON voltage 10VDC Maximum ON voltage 40VDC 40 47 Chapter 2 - Installation Current limited to 50 ma JEMStar will de-bounce both 'make' and 'break' transitions on each contact input for at least 20 milliseconds. The maximum detectable pulse rate is 10 transitions per second. For the S-Base and A-Base meter styles, JEMStar contact input connections are provided via a multiconductor cable.
The wire colors are as follows. Contact Input Connections Color Signal Wht/Brn/Blk Din 1 - Wht/Brn Din 1 + Wht/Blu Din 2 - Wht/Blu/Blk Din 2 + For Switchboard style meters, the connections are provided on rear-mounted terminal blocks. Switchboard Contact Input Connections Terminal Signal 20 Din 1-19 Din. Din 2 - / Rx - 17.
Din 2 + / Rx +.NOTE: If the Ethernet option is installed terminals 17 and 18 can be configured for either Din2 or Ethernet RX. Refer to the Ethernet Switchboard Interface Board section on page 62 for jumper settings. 41 48 JEMStar User Manual SIGNAL OUTPUT OPTIONS Contact Outputs JEMStar can be equipped with either of two optional contact I/O boards: the DI/DO board that consists of four Form A (N.O.) contact outputs; or the 5-KYZ board that consists of five Form C (N.O.
/ N.C.) contact outputs. Note: Only one type of contact output board can be installed in a JEMStar. DI/DO Board Each DI/DO output can be configured to perform any one of the following functions: Energy pulse output: configurable for any consumption quantity or energy constant End of Demand Interval Output: the output will close for one second when a demand (sub) interval closes. Site Monitoring Alarm output: the output will close when a Site Monitoring alarm condition is detected. Threshold Alarm output: the output will close when the selected Register exceeds a user-configured upper setpoint. The output will re-open when the Register falls below a user-configured lower setpoint.
Sag / Swell Alarm output: the output will close if the optional Sag / Swell Detection system determines that a voltage sag or swell event is in progress. System Error Alarm output: the output will close if a meter System Error condition is present. JEMStar does not provide a wetting voltage for the contact outputs; external wetting must be applied. The JEMStar contact closure outputs meet the following specifications: Maximum open-circuit voltage is 200 volts, DC or peak AC. Maximum closed-circuit voltage drop is 2.5 volts at 30 ma. In the closed state, the contact will conduct in either direction. The maximum current rating for a closed contact is 50 ma.
The contact outputs are TTL-compatible when used with an external 4700-ohm pull-up resistor to an external +5VDC source. Maximum output rate is 20 transitions per second. A transition is defined as a single change of state, either open-to-close or close-to-open. This equates to 10 complete pulse cycles per second. 42 49 Chapter 2 - Installation For the S-Base and A-Base meter styles, JEMStar contact output connections are provided via a multiconductor cable.
The wire colors are as follows. Contact Output Connections Color Signal Wht/Yel/Blk Dout 1 - Wht/Yel Dout 1 + Wht/Org/Blk Dout 2 - Wht/Org Dout 2 + Wht/Grn Dout 3 - Wht/Grn/Blk Dout 3 + Wht/Red Dout 4 - Wht/Red/Blk Dout 4 + For Switchboard style meters, the connections are provided on terminal blocks.
Dout 1 + / Rx + 14 Dout 2-13 Dout Dout 3-11 Dout. Dout 4 - / Rx - 9. Dout 4 + / Rx +.NOTE: If the Ethernet option is installed terminals 15 and 16 can be configured for either Dout1 or Ethernet RX, or terminals 9 and 10 can be configured for either Dout4 or Ethernet RX. Refer to the Ethernet Switchboard Interface Board section on page 62 for jumper settings.
43 50 JEMStar User Manual 44 5-KYZ Option Board The 5-KYZ board provides five Form-C (KYZ) contact outputs for connection to external devices. The first four outputs operate with all the same functions as the DI/DO contact outputs, and have all the same features and specifications (refer to the preceding section for information about output usage).
The fifth contact output can be use for any function except Threshold Alarms. The differences between the two option boards are described below.
Feature DI/DO Board 5-KYZ Board Number of Contact Outputs 4 5 Type of Contact Outputs Form A (N.O.) (1) Form C (N.O./N.C.) Analog Outputs Available Yes No (2) (1) The Form A contacts on the DI/DO Board can also be programmed for Normally Closed operation using JEMWare software. (2) Because all the output wires/terminals are used by contact outputs, the analog output option is not available in conjunction with the 5-KYZ board. Refer to JEMWare instruction manual for information about assigning the operating functions of the contacts. The following table defines the Input / Output connections for the 5-KYZ board. 68 JEMStar User Manual Switchboard housing: Ethernet Switchboard Interface Board The Switchboard Interface Board provides Input, Output, Power, and Communications connections to the terminal block on the switchboard version of the meter. Interface Board location For field upgrades: 1.
Remove the two #6 screws 2. Remove the connectors; 10 position ribbon, 26 position ribbon, 2 position power, and RJ- 11 (for modem, RS232, or Ethernet), from the interface board 3. Plug the connectors into the new interface board 4. Install #6 screws 62 69 Chapter 2 - Installation For all switchboard meters, except those with Ethernet Communications option, there are no user settings on this board. If the Ethernet option is installed the user must select the terminals to be used for the Ethernet receive signals.
The selection is made by changing jumpers J10 through J15 on the Ethernet Interface Board. The Ethernet receive (Rx + and -) terminals depend on the type of input/output board installed. Ethernet Connections for standard DI/DO board Rear Terminals Signal Interface Jumper 1 Tx Tx Dout4 + / Rx + J15 10 Dout4 - / Rx - J14 15 Dout1 + / Rx + J13 16 Dout1 - / Rx - J12 17 Din2 + / Rx + J11 18 Din2 - / Rx - J10 Ethernet Connections for 5 KYZ board Rear Terminals Signal Interface Jumper 1 Tx Tx Y5 / Rx + J13 16 K5 / Rx - J12 17 Din2 + / Rx + J11 18 Din2 - / Rx - J10 Ethernet Interface Board layout: Set jumpers J10 through J15. Select only one pair of connections for Rx + and Rx -: 63 70 JEMStar User Manual A cable is provided for connecting the rear terminal block to an Ethernet connection. The cable colors are as follows: Wire Connections Signal Color Pin Number Tx + Black 1 Tx - Red 2 Rx + Green 3 Rx - Yellow 6 Rear View: 64 71 METER OPERATION METER NAMEPLATE AND USER INTERFACE Meter Nameplate The meter s nameplate provides general information about the meter including model number, form, class, voltage, frequency, wiring configuration (3-Wire or 4-Wire), test amps, and the K t (test pulse constant in WH/count). There is also an area for the user to write in the CTR (current transformer ratio), VTR (voltage transformer ratio), and a multiply-by field.
JEMStar Front View; Globe Removed 65 72 JEMStar User Manual Meter Configuration All of the parameters that determine the meter s operation can be set by using the JEMWare configuration software. JEMWare includes a file-management system for storing configurations, configuration-editing screens for setting the various parameters, and communication channel setups to program the meter. JEMWare provides the ability to read the existing configuration from the meter and to read the time on the meter through serial communications. The JEMWare Instruction Manual describes each parameter that can be programmed.
NOTE: You may use the latest version of JEMWare to open a configuration file saved with a prior version, or to read the configuration from a JEMStar meter that was programmed with a prior version. If you do this, however, you must verify all settings in the configuration before saving it or programming it into a meter. Verify the settings by opening each item in the Meter Settings menu and reviewing the settings. This allows you to be confident that the correct settings are in place and also allows JEMWare to insert appropriate default settings for features that may not have been present in the older version of JEMWare. User Interface JEMStar includes a User Interface consisting of the front panel display and keypad.
The User Interface is designed to facilitate all the tasks most commonly performed at the meter without need of a separate computer. Some configuration functions are settable directly from the meter, while others will require setup through the JEMWare software program. The hardware Security Key must be installed in the Metrology board to access the keypad functions of the meter. Refer to Chapter 5 Maintenance for a complete description of the Security Key features.
The keypad, located at the right side of the meter s faceplate, consists of seven buttons. With the meter cover (or globe) in place, you can only press the READ button, which allows you to scroll through and view the meter s display registers. The RESET button performs a Billing Period Reset and is available on a closed meter. To use the button, you must first remove any external seals, and then twist the button 90º clockwise to unlock it. Also, a separate Security Key on the Metrology board is provided which can disable just the Reset button. Refer to Chapter 5 - Maintenance for further information.
With the meter cover (or globe) removed, all configuration buttons are accessible to the user. This allows you to enter the setup menus by pressing any one of the four arrow buttons. JEMStar Front Panel Controls 66 73 Chapter 4 Test & Calibration The JEMStar Display The display is divided into several sections that are dedicated to show specific meter functions or operations. Annunciator Section Potential Indicators Watts Flow Remote Communication End of Interval Thresholds (4 indicators) Reactive Flow JEMStar LCD Display Layout TOU Rate Indicator Minor Display Function Indicator Major Display (Register contents) Error Indicator Site Monitor Backlight Option As an option, the JEMStar display can be ordered with a backlighting feature. See the Model Number Description near the beginning of this manual to determine if your meter is equipped with this feature. Major Display The large 6 or 8-digit numeric display on the JEMStar is used for displaying measurement registers and the measurement quantity. Measurement registers shown on this display are configurable for up to 3 decimal places and for 3 or more significant digits (with lead zero blanking).
Minor Display In the upper center, the smaller 3-digit numeric display on the JEMStar is used for identification codes, register sequence numbers, or other indications as configured by the user. For registers in user-defined display lists, the user can assign up to a 3-digit identifier to each displayed item. Function Indicator This section of the display indicates information relative to the highlighted menu item. The Function Indicator displays simple text and may be customized for each user-assigned register in JEMWare. TOU Rate Indicator The upper right section of the display can be programmed to indicate the Time of Use rate (A-H) associated with any displayed measurement. Registers associated with the Total rate leave this blank. Annunciators The display indicates the following items as symbols; they are visible regardless of what is being displayed on the major or minor numeric displays: Potential Indicators Each of the three possible voltage inputs (A, B, and C) on the JEMStar has a corresponding Potential Indicator, shown in the upper left corner of the display.
The Potential Indicator is 67 74 JEMStar User Manual visible whenever the corresponding voltage input exceeds 20 volts. The only time that a Potential Indicator turns off is: If the corresponding voltage input is below 20 (+5, -0) volts If the meter Auxiliary Power is off If a blank display is shown Load Rate Indicator(s) The upper left section of the display includes a sequentially moving arrow indication of the direction and rate of energy flow for Watts and Reactive (VAR or Q). Left to right arrows indicates Watts delivered; right to left indicates Watts received. In a similar manner, bottom to top arrows indicate Reactive Lagging; top to bottom indicates Reactive Leading. End of Interval Indicator The display provides a momentary indication of the end of a Demand Interval or Subinterval. Upon occurrence, a flag appears in the lower left for at least one second. Error Indicator When the meter detects an error, a flag will appear in the lower right corner of the display.
Register Threshold 1-4 Appears in the bottom row when one of the user-configured Threshold conditions is exceeded. There is a separate indicator for each of the four Threshold settings. Site Monitor Appears in the bottom row when one of the user-configured Site Monitor conditions is in effect. COLD START If JEMStar circuit boards have been replaced or software options have been installed, a cold start procedure must be performed. A cold start erases all register and load profile data.
The communication and configuration parameters are reset to factory defaults (see Appendix A). Upgrading JEMStar operating firmware automatically performs a cold start at the end of the upgrade procedure. After a Cold Start is performed, the meter should be reconfigured using JEMWare configuration software to program the meter for your specific application. Performing a Cold Start will cause a loss of data. To perform a cold start: 1.
Remove power from the meter, and then remove the meter globe. Simultaneously press the UP and DOWN arrow buttons while applying power to the meter, until the JEMStar logo is displayed. Default Time Displays When a Cold Start is performed, certain time and date displays in the meter (for example, Date of Peak Demand) contain a default time/date until the meter records an actual value.
This 'non-value' displays as midnight, January 1, In other words, a time register will show and a date register will show If you see a display with this particular time and date, please note that this is simply an indication that the meter has not received a valid setting yet. 68 75 Chapter 4 Test & Calibration NAVIGATING THE DISPLAY MENUS In standard operation, the JEMStar display is used to show the measured electrical quantities and various other monitored parameters. However, the display can easily be switched into the Setup mode, which uses a simple menu structure for access to the meter s multiple features. Some menu items are readonly such as health status indicators, while others can be edited (time, date, communications, etc.). Through a series of front panel button presses, you can directly configure many of the simpler meter functions. Note: the front panel keypad may be locked out, depending on your company policy. See Section 5 Maintenance for information on Security Keys.
The Display Menu is divided into logical groups of features and categories. The following chart shows all menu functions.
69 76 JEMStar User Manual Display Menu Layout Menu Column 1 Menu Column 2 Menu Column 3 Description of Operation Editable Feature Settings Preset I/O Configure Identity Demand Date/Time Health Status Optical Serial 1 Serial 2 Ethernet VTR:1 Y CTR:1 Y Service 4Wire-Y, 4Wire-D, 3Wire-D, etc. 97 Chapter 5 Maintenance Register/Metrology board (behind front plate) I/O board Serial Communication board Modem battery pack Ribbon Cable Battery for RAM LCD Display Optical Port I/O Cable 3 Ft.
Reset Button Seal Power Supply CT Base JEMStar S-Base, Exploded view, Internal Case removed 91 98 JEMStar User Manual Switchboard Meters Cover Removal 1. Remove power from the meter, if possible. It is not mandatory that power is removed because the Switchboard meter has its own disconnect device. However, caution is advised since live terminations exist inside the housing even after the paddle is removed. Remove the wire seal on the thumbscrew at the bottom center of the meter cover. Unfasten the thumbscrew and lift the cover slightly while pulling forward from the bottom. Internal Chassis Removal 1.
Locate the black plastic paddle at the bottom of the chassis. Grasp the protruding handle section and firmly pull it toward you. This will safely disconnect and bypass the CT circuits from the meter. Locate the upper and lower metal locking latches.
At the same time, pull both the upper and lower tabs towards you until the levers are pointed straight out (about 90 swing). Grasping the levers, gently rock the chassis while pulling forward. When the chassis is loose, remove it from the housing. You can now take the entire chassis to your service shop.
When re-installing the meter, note that the thumbscrew on the front cover has a small indentation on the head. This indicates the orientation of the hole in the screw for inserting the sealing wire. Turn the screw until the dot is in a horizontal position, and the hole in the screw will line up with the hole in the plastic cover. Serviceable Parts The JEMStar s communication board and I/O board can be changed in the meter shop with a few simple procedures.
Because the register/metrology board is calibrated to the current transformers and power supply board, Ametek Power Instruments recommends that the meter be returned to the factory if changes to these components are necessary. The JEMStar clock/ram battery is designed to last the life of the meter under normal storage and usage conditions.
If the battery needs replacement, or you would like more information on any JEMStar components, call Ametek Power Instruments Technical Support staff at Serial Communication Board (Option) To remove the serial comm board: 1. Remove power from the meter. Ensure proper grounding for static protection. Remove the globe from the S-base or A-base meter. Remove the cover from the switchboard-case meter and pull the chassis out of the rack.
Remove the top housing cover as previously described (S-base and A-base only). Disconnect the ribbon cable between the Register/Metrology and Comm board. Pull the Comm board out part way. Disconnect the modem cable from the Comm board (if included). Pull the Comm board completely free of the meter. Place the Comm board on an antistatic mat.
92 To replace the serial comm-option board: 1. Reverse the procedure above. 99 Chapter 5 Maintenance I/O Board To remove the I/O option board: 1.
Remove power from the meter. Ensure proper grounding. Remove the globe from the S-base or A-base meter. Remove the cover from the switchboard-case meter and pull the chassis out of the rack. Remove the top housing cover as previously described (S-base and A-base only). Remove the ribbon cable.
Firmly grasp the sides of the I/O board at the top of the board and remove. Place the board on an antistatic mat. To replace the I/O option board: 1. Reverse the procedure above. Use the software utility program (included on a diskette with the I/O board) to transfer the proper analog output calibration data into the meter.
Clock/RAM Battery JEMStar contains an easily replaceable battery that is used to power the internal clock and RAM memory. The long life cell should provide support for 10 years, and its life can be checked from the front panel display. There is also a display register (Days on Battery) that can be read to determine how many days the battery has been used. If the meter is in service, the battery should be replaced while the meter is under power so that data is not lost (the battery is not used as long as service power is connected). To replace the clock/ram battery: 1. Remove the outer globe from the S-base or A-base model.
Remove the front cover from the switchboard model. The battery is the 1 high cylinder located at the top, right side of the meter. Unplug the twopin connector and lift the battery out of its holder. Install a new, exact replacement battery, available from the factory. Specify part number From the front panel menu, select Settings Health Batt Status, and then press the Set button until RESET is displayed. Press the Set button once more and verify the display changes to BATTERY OK. The Date and Time may also need to be set if the meter was taken out of service while changing the battery.
93 100 JEMStar User Manual Phone Home on Power Outage Battery Pack (Option) JEMStar incorporates a replaceable battery pack that is used to power the internal Phone Home modem during power outages. The battery will provide power to the modem for at least 8 hours of call time. It is recommended that the battery be changed every three years, or sooner if you experience numerous power outages. To replace the Power Outage battery pack: 1. Remove power from the meter. Ensure proper grounding.
Remove the outer globe from the S-base or A-base model. Remove the front cover from the switchboard model. On an S-based or A-base meter, remove the top cover. The battery pack is the four-cell assembly located in a holder directly under the cover. Unplug the two-pin connector and lift the battery up and out of its holder.
On the switchboard model, pull the chassis out of the rack by opening the upper and lower retaining latches. The battery pack is located under a retainer bracket near the back of the meter.
Unplug the two-pin connector, loosen the bracket screws, and slide the battery out of its holder. Install a new, exact replacement battery, available from the factory. Specify part number 101 Chapter 5 Maintenance Security Keys JEMStar includes two security keys to protect the meter from tampering and unwanted access to certain meter functions. There are two removable jumpers (keys) located inside the meter on the Metrology board.
One security key is used to disable all configuration changes from the front panel keypad menus, plus the following serial port commands when accessing the meter via JEMWare. Numbers in parentheses are the hex equivalent of the specific command in JEM binary (see Command Protocol manual ). 102 JEMStar User Manual The meter is provided with both keys factory installed. If you want to remove the key(s) after proper configuration in your meter shop, follow this procedure. Remove power from the meter.
Remove the outer globe of the meter. Remove the top cover of the housing by unscrewing three Phillips-head screws (below). Carefully lift the cover off, paying particular attention to the RAM battery wires. Do not unplug the battery, or data will be lost! Top View of meter with globe removed Remove screws at these locations, then lift the top cover off.
Be careful of the battery wires! Jumper location beneath the cover Looking from rear of the meter, with top cover removed Remove this jumper to disable all configuration access from the meter keypad. Remove this jumper to disable the meter s RESET pushbutton.
96 103 Chapter 5 Maintenance The jumpers are a standard 0.1 center, two-pin female shorting connector commonly used on most PC motherboards. Contact AMETEK and specify part number, or ask your local computer shop for replacements. Tip: You can park the jumper in a disconnected position by just plugging it onto one contact.
This will keep the jumper in the meter for future use. Firmware Upgrades New meter firmware can be downloaded remotely via the meter s serial port or modem (if equipped). This may be used to add optional features, product enhancements, or program upgrades. Contact the factory for more information and assistance. Health Diagnostics The JEMStar health-status register provides an indication of the operating ability of the meter. This is one of the status registers that can be displayed in either of the registering display modes (Normal or Alternate). An E on the JEMStar s display indicates that a health condition is present and that the health-status register should be viewed.
JEMStar Front Panel Display Health Status Error The JEMStar meter should never have a health-status error; however, in the unlikely event, contact AMETEK for assistance in interpreting the situation. 97 104 JEMStar User Manual SITE DIAGNOSTICS JEMStar can be configured to monitor its operating environment and report suspicious conditions. This monitoring occurs in two forms: Installation Verification and Installation Monitoring.
Installation (Site) Verification JEMStar has an operating mode called Installation Verification, during which the meter makes and displays continuous readings of per-phase voltage, current, and their phase angles with respect to Volts Phase A. The user can enter this mode and read the information either from the front panel, or remotely via JEMWare software. Diagnostic Display using JEMWare Verification codes are used to interpret the information in light of the meter and service type.
If the actual readings are inconsistent with the expected readings, the information will suggest possible remedies to be performed. 98 105 Chapter 5 Maintenance Installation (Site) Monitoring JEMStar will check its present operating conditions on a regular basis and detect the following conditions: Per-phase instantaneous volts outside of configured thresholds (upper and lower) Per-phase instantaneous amps outside of configured thresholds (upper and lower) Per-phase power factor outside of configured range (upper and lower) Reverse power flow on any phase Phase voltage sequence out of order Internal meter error Each test can be disabled or enabled during meter configuration. Any detected anomaly can be configured to report any combination of the following: Log to an event buffer, with the date and time when the condition was detected. If later on the condition is detected to have cleared, another event shall be logged noting the date and time. Set an indication in the Health Status summary register. This indication is removed when the detected condition has gone away. Latch an indication in the Health Status summary register.
This indication will remain even when the detected condition has gone away. Activate an annunciator on the front panel. This indication is removed when the detected condition has gone away. Latch an annunciator on the front panel.
This indication will remain even when the detected condition has gone away. Override the normal display with a status report that must be manually acknowledged before normal display operation can continue. This report always latches. Close a contact output on the JEMStar.
The contact output will remain closed until the detected condition has gone away. Notes: Anomalies are reported only when first detected; persistent conditions are not re-reported unless they have cleared first. A Billing Period Reset clears any latched anomaly reports that are no longer valid. 99 106 JEMStar User Manual 100 107 ADVANCED FEATURES TIME OF USE JEMStar maintains Time of Use (TOU) information for Consumption, Average PF, Peak Demand, Time of Peak Demand, Coincident Demand, and Coincident PF registers. The meter can differentiate among up to 9 possible TOU rates, with registers for each rate, as configured by the user. JEMStar can have up to 8 rate changes per day.
Each rate change is configured for the time of the change (resolved to 1 minute) and the rate code (A H, or Total). Midnight is always assumed to be a rate change. The user must define the rate to begin at midnight of each day (midnight counts toward the limit of 8 changes per day). JEMStar will recognize up to 9 day types per season: each day of the week (Sunday through Saturday) plus two Holiday types (Type 1 and Type 2).
A rate change schedule must be defined for each day type. A given day is recognized as a particular day of the week based on the JEMStar internal clock and calendar, unless that date is listed in the Holiday List. Any date in the Holiday List must be identified as a Type 1 or Type 2 Holiday. JEMStar can store up to 200 holidays in the Holiday List.
JEMStar is configurable for up to 4 season changes per year. The date (month, day, and year) of each season start, along with an indication of the season (Season 1, Season 2, Season 3, or Season 4) that starts on that date, is stored in the Season List. The Season List will hold up to 80 Season Start dates (4 per year for 20 years). JEMStar can be configured to force the present TOU rate in effect to any other programmed rate by triggering a contact closure input. The user must select a rate (1-8, or Total) to switch to when a closure is detected on the input. The rate then reverts to the normal scheduled rate when the contact opens. To configure a meter for Time of Use functions, consult the JEMWare instruction manual 108 JEMStar User Manual LOAD PROFILE JEMStar can record up to 4 Load Profile channels as a standard feature, or up to 12 channels as an added option.
All Load Profile configurations are performed using JEMWare software. Load Profile storage is such that if the available memory becomes full, the oldest record(s) are deleted from memory to make room for the most recent.
JEMStar stores one single record at the end of each Load Profile interval. A Load Profile interval may end on any of the following conditions: On the hour (if configured for 'internal Load Profile synchronization') and each multiple of the configured Load Profile interval length after the hour. Load Profile intervals may be configured to be 1, 5, 10, 15, 20, 30, or 60 minutes in length. On any time set, Daylight Saving Time adjustment, recognizable power outage, or other event that would cause a discontinuity in interval timing. On any event that may cause a discontinuity in registration so that register readings and equivalent Load Profile readings could not be reconciled. Register Freeze, Billing Period Reset, Register Preset, etc.) The Load Profile intervals resemble demand intervals, but can be set independently. The interval closures occur on even increments within the hour.
For example, a 15-minute interval will begin on the hour and will close at 00:15; the next interval will close at 00:30; the next interval will close at 00:45; etc. At the end of each interval, the meter records the number of pulses accumulated since the last Load Profile interval closure or special event. When the Load Profile data storage memory is full, the meter will overwrite the oldest information. The number of days of storage available is determined by the Load Profile interval length and number of channels stored. Each Load Profile interval contains one or more channels of data. Each channel is configurable as to the quantity to be recorded, and the equivalent pulse constant (Km).
Each channel can store up to 16,000 equivalent counts per interval. JEMStar load profile storage will vary by the number of channels selected, the recording data interval and whether or not the extended memory is provided. By configuring fewer channels and/or longer intervals, you can increase the number of days of storage. There are two Load Profile Memory configurations that will effect the number of days storage available.
See the following tables for additional information. Table 1 and Table 2A detail the days for the original JEMStar design. Table 2B details the days available with the newer extended memory design.
Meters manufactured with serial numbers XXXXX or lower have the Original Memory. Meters manufactured with serial numbers higher than XXXXX have the Extended Memory feature. Each Load Profile channel can be configured to record one of the following: Any consumption quantity The number of pulses received in an interval on a contact closure input. Both make and break transitions are counted in the total. State of a contact input over the interval.
If the contact was closed one or more times during the interval, the channel will record 1 count, otherwise zero. 102 109 Chapter 6 Advanced Features The average of any Instantaneous quantities over a Load Profile interval. In this case, the channel pulse count multiplied by the equivalent pulse constant shall give the average value, NOT the consumption in unit-hours, for the Load Profile interval. Accumulation in a Totalization channel. For example, for a 3-element meter operating at 120 volts, 5 amps, 1.0 PF on every element, an equivalent pulse constant of 1.0 on all channels, and 15 minute Load Profile intervals, the Watthour Delivered channel will report 450 counts (120V x 5A x 3 elements / 4 intervals per hour). 196 JEMStar User Manual Press and the meter's first Web page is retrieved and displayed: There are three Web pages available in the JEMStar: The Consumption and Demand page, the Instantaneous Power page, and the Meter Site Status page. Consumption and Demand is the first page displayed.
Each page consists of two frames: an upper information frame and a lower navigation frame. The upper frame displays information described by the page name, and the lower frame displays the meter identification and links to all meter Web pages. The upper frame of each page automatically refreshes approximately every 30 seconds. The JEMStar's Consumption and Demand Web page shows in table form the contents of Watt, VAR, and VA energy and demand registers currently configured in the meter. If a space in the table contains 'n/a' it means the meter is not configured to display that register.
All values are displayed in meter primary units.
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