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Therefore, buffer will always contain the number cycles specified in this setpoint before the trigger point and the remaining space in the buffer is filled with the cycles after the trigger point. Consult the factory for details on the use of this feature.
Page Analog Outputs Analog Outputs will operate in the range defined by this setpoint. Although parameters can be selected for continuous analog output, all values are available digitally through the communications interface. Page 0. The locations are as described in the table below. Analog Output Enter the required time delay in this message.
To skip over a character press the key. On occasions it may be necessary to stop the data loggers using the PQMII keypad and then a computer to extract the logged information. Page 1 minute an event with a swell type will be logged. If the duration was greater then 1 minute an event with an overvoltage type will be logged when this feature is configured.
If an alarm is required when the PQMII is not operational due to a loss of control power, select failsafe operation. Otherwise, choose non- failsafe. Page The PQMII uses a priority system to determine which function will control the relays if they Note happen to be assigned to more than one function. Page Selecting an auxiliary relay activates the auxiliary relay for a voltage unbalance condition but no message will be displayed. This is intended for process control. Page or A-B-C sequence.
If the voltages are connected with the wrong sequence e. Page Harmonic Distortion This is intended for process control. Page Frequency This is intended for process control. Page After entering this state, when the power factor becomes less lagging than the power factor dropout level, the PQMII will reset the output relay to the non-operated state. Page This is intended for process control. Page Pulse Input This setpoint can be used to give an indication alarm or control if the programmed level is equaled or exceeded.
Page Miscellaneous Alarms RS port. Page S5 Testing This allows for verification of current and voltage related functions. When the programmed time has elapsed, switch input simulation will turn off.
Page Factory Use Only 5. A detailed description of each displayed message in these groups is given in the sections that follow. Page Actual Values Menu See page 6— Va is also used as the reference when in Simulation Mode. Page Frequency Metering Frequency metering actual values are displayed in this page. The switch input will then count the number of closures or openings depending upon how the switch is configured; Page Analog Input The displayed user defined name and units will change to the corresponding values depending upon which analog input is connected.
Refer to 5. Page Switch Status If the alarm is set as latched, a keypad reset or a serial port reset is required. The PQMII uses an internally generated software clock which runs for approximately thirty days after the control power has been removed. For instructions on setting the clock, see 5. See 4. Page Voltage Disturbance The voltage disturbance recorder monitors only measured values. Therefore, when the Note Vbc delta connection only and Vbn 2 VT 4-Wire Wye only phases are calculated quantities, they are not considered a source.
Page As a result, the time recorded in the event recorder is the start time of the alarm condition, while the time recorded in the disturbance recorder is the end time of the condition. The data specific to that Event can be read starting at memory map location 0AE0h. The specific 7— Page Event Number is usually not known and the entire Event Record must be read.
Run the new code. Page Click on OK. Click on Send. When complete the Boot Menu will again appear. Page Phasor Implementation 7. Since the PQMII requires a minimum 20 V for detection and has an upper voltage input limit of V, the following limitation exists for the Trace Memory undervoltage and Page KY and KZ connections at the end receiver.
Page Data Logger Implementation The Data Logger allows various user defined parameters to be continually recorded at a user-defined rate. Page Modes Of Operation 4— Read the required amount of data from the 64 Registers in the Block. Page 26 bytes, and there were 28 bytes of memory left in the memory structure, the Data Logger will not use those last 28 bytes, regardless of the mode of operation. Page Record gives a time and date of Ventilation may be required in enclosures exposed to direct sunlight.
Shipping box Once the cutout and mounting holes are made in the panel, use the eight 6 self-tapping screws provided to secure the PQMII. Mount the unit on a panel or switchgear door to allow operator access to the keypad and indicators. Product Identification Product attributes vary according to the configuration and options selected on the customer order. Before applying power to the PQMII, examine the label on the back and ensure the correct options are installed.
The following section explains the information included on the label shown below:. Tag : An optional identification number specified by the customer. Mod : Indicates if any unique features have been installed for special customer orders. This number should be available when contacting GE Multilin for technical support.
Version: An internal GE Multilin number that should be available when contacting us for technical support. Serial No. Record this number when contacting GE Multilin for technical support. Manual and Firmware Revisions Each instruction manual revision corresponds to a particular firmware revision.
The manual revision is located on the title page as part of the manual part number the format is nnnn-revision. External Connections Signal wiring is to Terminals 21 to These terminals accommodate wires sizes up to 12 gauge.
Please note that the maximum torque that can be applied to terminals 21 to 51 is 0. CT, VT, and control power connections are made using Terminals 1 to These 8 screw ring terminals accept wire sizes as large as 8 gauge.
Consult the wiring diagrams for suggested wiring. Considerations for wiring each feature are given in the sections that follow. Wiring Diagrams This wiring diagram below shows the typical 4-wire wye connection which will cover any voltage range. The 2 element 4-wire wye connection can be used for situations where cost or size restrictions limit the number of VTs to two. With this connection, Phase Vbn voltage is calculated using the two existing voltages.
This wiring configuration will only provide accurate power measurements if the voltages are balanced. This diagram shows the typical 3-wire delta connection which will cover any voltage range.
For a single-phase connection, connect current and voltage to the phase A inputs only. All other inputs are ignored. The top drawing shows the standard wiring configuration using three CTs. An alternate wiring configuration uses only two CTs. If the applied voltage does not match, damage to the unit may occur.
Check the product identification to verify the control voltage matches the intended application. A low voltage power supply is available as an option. Verify from the product identification label that the control voltage matches the intended application. Connect the control voltage input to a stable source for reliable operation. Consult the factory for replacement fuses, if required. Using 12 gauge wire or ground braid, connect Terminals 5 and 6 to a solid system ground, typically a copper bus in the switchgear.
The PQMII incorporates extensive filtering and transient protection to ensure reliable operation under harsh industrial operating environments. Transient energy must be conducted back to the source through Filter Ground Terminal 5.
Filter Ground Terminal connections must be removed during dielectric testing. These inputs can be directly connected or supplied through external VTs. When measuring line-to-line quantities using inputs V1, V2, and V3, ensure that the voltage common input Vn is grounded.
This input is used as a reference for measuring the voltage inputs. Each current input has 3 terminals: 5 A input, 1 A input, and common. Select either the 1 A or 5 A terminal and common to match the phase CT secondary.
Correct polarity as indicated in the wiring diagrams is essential for correct measurement of all power quantities. The accuracy specified in this manual assumes no error contribution from the external CTs and VTs. Consult 1. The wiring diagrams show the state of the relay contacts with no control power applied; that is, when the relays are not energized. Alarms can be enabled or disabled for each feature to ensure only desired conditions cause an alarm.
For Latched mode, the key must be pressed or serial port reset command received to reset the alarm relay.
Refer to 6. Auxiliary Relays 1,2,3 Optional; Terminals 34 to 42 : Additional output relays can be configured for most of the alarms listed in 6. When an alarm feature is assigned to an auxiliary relay, it acts as a control feature.
When the setpoint is exceeded for a control feature, the output relay changes state and the appropriate Aux LED lights but no indication is given on the display. The auxiliary relays can also be programmed to function as kWh, kvarh, and kVAh pulse outputs.
The figure below shows the internal circuitry of the switches. Each switch input can be programmed with a character user defined name and can be selected to accept a normally open or normally closed switch. A list of various functions assignable to switches is shown below, followed by a description of each function. Alarm Relay: When a switch input is assigned to the alarm relay, a change in the switch status produces an alarm condition and the alarm relay activates.
See 1. One of the billing parameters used by a utility is peak demand. By synchronizing the PQMII to the utility meter, the PQMII can monitor the demand level read by the utility meter and perform load shedding to prevent the demand from reaching the penalty level. The utility meter provides a dry contact output which can be connected to one of the PQMII switch inputs.
Setpoint Access: The access terminals must be shorted together in order for the faceplate keypad to have the ability to store new setpoints. Typically the access terminals are connected to a security keyswitch to allow authorized access only. Serial port commands to store new setpoints operate even if the access terminals are not shorted.
In this way, all of the programmed setpoints remain secure and tamper proof. Select Analog Output: This switch selection allows each analog output to be multiplexed into two outputs. See the following section and 5. Select Analog Input: This switch selection allows the analog input to be multiplexed into two inputs.
See the 2. Refer to 5. This selection is available only if the Control C option is installed. These outputs can be multiplexed to produce 8 analog transducers. This output is a current source suitable for connection to a remote meter, chart recorder, programmable controller, or computer load. Use the 4 to 20 mA option with a programmable controller that has a 2 to 40 mA current input.
If only a voltage input is available, use a scaling resistor at the PLC terminals to scale the current to the equivalent voltage.
Current levels are not affected by the total lead and load resistance which must not exceed for the 4 to 20 mA range and for the 0 to 1 mA range. For readings greater than full scale the output will saturate at 22 mA 4 to 20 mA or 1. These analog outputs are isolated and since all output terminals are floating, the connection of the analog output to a process input will not introduce a ground loop.
Part of the system should be grounded for safety, typically at the programmable controller. For floating loads such as a meter , ground Terminal 24 externally. See 5. Each analog output can be assigned two parameters: a main parameter and an alternate parameter. Under normal operating conditions, the main parameter will appear at the output terminals. By opening and closing the switch input, two analog output parameters can be multiplexed on one output. As shown in wiring diagrams, these outputs are at Terminals 25 to 28 and share Terminal 24 as their common.
Shielded cable should be used, with only one end of the shield grounded, to minimize noise effects. Signals and power supply circuitry are internally isolated, allowing connection to devices PLCs, computers, etc.
Each terminal, however, is clamped to 36 V to ground. This current signal can be used to monitor any external quantity, such as transformer winding temperature, battery voltage, station service voltage, transformer tap position, etc.
Any transducer output ranges within the range of 0 to 20 mA can be connected to the analog input terminals of the PQMII. COM2, which is also a rear RS port, can be used for data collection, printing reports, or problem analysis without disturbing the main communications interface.
Suitable wire should have a characteristic impedance of W such as Belden These wires should be routed away from high power AC lines and other sources of electrical noise.
The total length of the communications wiring should not exceed feet for reliable operation. Correct polarity is essential for the communications port to operate.
These polarities are specified for a 0 logic and should match the polarity of the master device. If the front panel TX1 or TX2 lights are flashing, this.
Avoid star or stub connected configurations. If a large difference in ground potentials exists, communication on the serial communication link will not be possible. The last PQMII in the chain and the master computer require a terminating resistor and terminating capacitor to ensure proper electrical matching of the loads and prevent communication errors.
Using terminating resistors on all the PQMIIs would load down the communication network while omitting them at the ends could cause reflections resulting in communication errors. Install the , watt terminating resistor and 1 nF capacitor externally.
Although any standard resistor and capacitor of these values are suitable, these components can also be ordered from GE Multilin as a combined terminating network. The master should be centrally located and can be used to view actual values and setpoints from each PQMII called the slave device.
Setpoints in each slave can also be changed from the master. See 4. This port uses the same communication protocol as the rear terminal RS ports. Cabling to the RS port of the computer is shown below for both 9-pin and pin connectors. This is also known as flash or hipot testing. Filter networks and transient protection clamps are used between the control power, serial port, switch inputs, analog outputs, analog input, and the filter ground terminal 5 to filter out high voltage transients, radio frequency interference RFI and electromagnetic interference EMI.
The filter capacitors and transient absorbers could be damaged by the continuous high voltages relative to ground that are applied during dielectric strength testing.
Disconnect the Filter Ground Terminal 5 during testing of the control power inputs. Relay contact and CT terminals do not require any special precautions. Do not perform dielectric strength testing on the serial ports, switch inputs, analog input or analog output terminals or the PQMII internal circuitry will be damaged.
Front Panel The local operator interface for setpoint entry and monitoring of measured values is through the front panel as shown in the figure below. Control keys are used to select the appropriate message for entering setpoints or displaying measured values. Alarm and status messages are automatically displayed when required.
Indicator LEDs provide important status information at all times. Display All messages are displayed in English on the character liquid crystal display. This display is visible under varied lighting conditions. When the keypad and display are not actively being used, the screen displays a default status message. Note that alarm condition messages automatically override the default messages. This situation occurs if there is no connection, the serial wires become disconnected, or the master computer is inactive.
This condition can be caused by incorrect message formats such as baud rate or framing , reversed polarity of the two RS twisted-pair connections, or the master not sending the currently programmed PQMII address.
Relays The status of the output relays is displayed with these LED indicators. Alarm: The Alarm relay is intended for general purpose alarm outputs. This indicator will be on while the Alarm relay is operating. When the condition clears, the Alarm LED indicator turns off. If the alarm relay has been programmed as Latched, the alarm condition can only be cleared by pressing the RESET key or by issuing a computer reset command.
Aux1: The Aux 1 relay is intended for control and customer specific requirements. Aux2: The Aux 2 relay is intended for control and customer specific requirements. Aux3: The Aux 3 relay is intended for control and customer specific requirements.
The keys are used to navigate through message pages, allowing the user to modify settings and view actual values from the device location. Menu Key Setpoints and actual values are arranged into two distinct groups of messages.
The MENU key selects the main setpoints or actual values page. Pressing MENU while in the middle of a setpoints or actual values page returns the display to the main setpoints or actual values page. An acknowledgment message will flash if the new setpoint is successfully saved in non-volatile memory.
Refer to 3. Upon pressing the key, the PQMII will perform the appropriate action based on the condition present as shown in the table below. Alarm LED indicators and alarm relay remain on because condition is still present. Auxiliary LED indicator s and aux relay s remain on because condition is still present. Auxiliary and Alarm LED indicators and alarm and aux relays remain on because condition is still present. No message displayed, and appropriate Auxiliary LEDs and auxiliary relay s turned off.
A page header message will appear at the beginning of each page and a page footer message will appear at the end of each page. Similarly, for multiple choice selections, each time a VALUE key is pressed, the next choice is displayed. Hold the key down to rapidly change the value. The page number and page title appear on the second line. All setpoint page headers are numbered with an S prefix. Actual value page headers are numbered with an A prefix. The messages are organized into logical subgroups within each Setpoints and Actual Values page as shown below.
See Chapter 4: Software for further details. A numeric access code must be entered to program new setpoints using the front panel keys. To enable the setpoint access security feature, the user must enter a value in the range of 1 to The factory default access code is 1.
If the switch option is installed in the PQMII, a hardware jumper access can be assigned to a switch input. Setpoint access can then only be enabled if the switch input is shorted and the correct software access code entered. Attempts to enter a new setpoint without the electrical connection across the setpoint access terminals or without the correct access code will result in an error message. When setpoint programming is via a computer, no setpoint access jumper is required.
After three seconds, the next default message in the sequence will display if more than one is selected. Alarm messages will override the default message display. Any setpoint or measured value can be selected as a default message. Messages are displayed in the order they are selected. If 10 default messages are already selected, the first message is erased and the new message is added to the end of the queue. If default messages are not known, wait until the PQMII starts to display them and then write them down.
Use the MESSAGE keys to display the setpoint or actual value message to be deleted from the default message queue and follow the steps below. Note, each time the factory setpoints are reloaded the user programmed default messages are overwritten with these messages. Overview Although setpoints can be manually entered using the front panel keys, it is far more efficient and easier to use a computer to download values through the communications port.
This allows you to edit and save setpoint files for later use. In addition, measured values, status and alarm messages can be displayed with the actual screens. The following figures below illustrate typical connections for RS and RS communications. Click the Install Now button and follow the installation instructions to install the no-charge EnerVista software on the local PC. When installation is complete, start the EnerVista Launchpad application.
Select the Web option to ensure the most recent software release, or select CD if you do not have a web connection. EnerVista Launchpad will obtain the installation program.
The program will request the user to create a backup 3. Click on Next to begin the installation. Click Finish to end the installation. Description Before starting, verify that the serial cable is properly connected to either the RS port on the front panel of the device for RS communications or to the RS terminals on the back of the device for RS communications.
See the previous section for the installation procedure. Click on the Device Setup button to open the Device Setup window. Click the Add Site button to define a new site. Enter the desired site name in the Site Name field. If desired, a short description of site can also be entered along with the display order of devices defined for the site. Click the OK button when complete. Click the Add Device button to define the new device. Enter the desired name in the Device Name field and a description optional of the site.
Select Serial from the Interface drop-down list. This will display a number of interface parameters that must be entered for proper RS functionality.
Enter the physical communications parameters baud rate and parity settings in their respective fields. If a communications error occurs, ensure that the PQMII serial communications values entered in the previous step correspond to the relay setting values.
Click OK when the relay order code has been received. Upon successful completion of this procedure, the PQMII will have new firmware installed with the original setpoints. Select an appropriate name and location for the setpoint file. Click OK. A warning will appear. Select Yes to proceed or No the abort the process. Do not proceed unless you have saved the current setpoints as shown in the previous section. The firmware filename has the following format:.
Select the required file. Click on OK to proceed or Cancel to abort the firmware upgrade. One final warning will appear. This will be the last chance to abort the firmware upgrade. Select Yes to proceed, No to load a different file, or Cancel to abort the process. While the file is being loaded into the PQMII, a status box appears showing how much of the new firmware file has been transferred and how much is remaining. The entire transfer process takes approximately five minutes.
Carefully read any displayed messages and click OK to return the main screen. A dialog box will appear to confirm the request to download setpoints. If new setpoints were added in the firmware upgrade, they will be set to factory defaults. Entering Setpoints The System Setup page will be used as an example to illustrate the entering of setpoints.
The following window will appear:. Click Accept to exit from the keypad and keep the new value. Click on Cancel to exit from the keypad and retain the old value. Click OK to accept any changes and exit the window. Click Cancel to retain previous values and exit. Use the Actual pull-down menu to select various measured value screens. Monitored values will be displayed and continuously updated. Setpoint Files To print and save all the setpoints to a file follow the steps outlined in 4.
Context-sensitive help can also be activated by clicking on the desired function. Distorted peaks or notches from SCR switching provides clues for taking corrective action. Waveform capture is also a useful tool when investigating possible wiring problems due to its ability to display the phase relationship of the various inputs. Select the buttons on the left to display the desired waveforms. The waveform values for the current cursor line position are displayed to the right of the selected buttons.
Numerical values are displayed directly below the button. Harmonic Analysis Non-linear loads such as variable speed drives, computers, and electronic ballasts can cause harmonics which may lead to problems such as nuisance breaker tripping, telephone interference, transformer, capacitor or motor overheating. For fault diagnosis such as detecting undersized neutral wiring, need for a harmonic rated transformer or effectiveness of harmonic filters; details of the harmonic spectrum are useful and available with the PQMII and the EnerVista PQMII Setup Software.
Enter the trigger parameter for the Select Trigger setting. Click the Select button for the Trigger setting. The Waveform capture window will appear.
To display the harmonic spectrum, click the Harmonics button on the top of the screen. The window includes details of the currently selected harmonic and other harmonic analysis-related data for example, THD, K Factor, etc.
The trace memory can record maximum of 36 cycles of data 16 samples per cycle for all voltage and current inputs simultaneously. This register will keep a. The Total Trace Triggers counter will rollover to 0 at The Trace Memory Usage parameter is set as follows: 1 x 36 cycles: upon trigger, the entire buffer is filled with 36 cycles of data 2 x 18 cycles: 2 separate cycle buffers are created and each is filled upon a trigger 3 x 12 cycles: 3 separate 12 cycle buffers are created and each is filled upon a trigger If the Trace Memory Trigger Mode is set to One-Shot, then the trace memory is triggered once per buffer; if it is set to Retrigger, then it automatically retriggers and overwrites the previous data.
The Trace Memory Trigger Delay delays the trigger by the number of cycles specified. The Voltage, Current, and Switch Inputs selections are the parameters and levels that are used to trigger the trace memory. This launches the Trace Memory Waveform window. This launches the Data Log settings box shown below.
The state of each data logger and percent filled is shown. Use the Start Log 1 2 and Stop Log 1 2 buttons to start and stop the logs.
Circulate: when the data logger is full, it will start from the beginning and overwrite the previous data. The total log size is approximately KB.
The allotment of this memory can be varied between the two logs to maximize the overall log time. If desired, the optimization can also be performed manually by the user. This time is dependent on the logging interval and the number of parameters being logged. Set the parameters to be logged by setting the various Log Assignment parameters to the desired log. The Data Log 1 2 dialog box displays the record numbers, data log start time, the current time, and parameter values for the current cursor line position.
The events roll-over and old events are lost when more than events are recorded. Therefore, all voltage disturbance events will be cleared when control power is cycled to the meter. Select the Voltage Disturbance Recorder Setup tab. Within the voltage disturbance recorder window, each event is listed and can be selected. When the event is selected the following values are displayed: Dist. Number: The event number. The first event recorded after the event recorder is cleared will be given the event number of 1.
Each subsequent event will be given an incrementing event number. If the event number reaches , the event number will rollover back to 1.
Type: The type refers to the classification of the event i. Sag, Swell, Undervoltage or, Overvoltage Dist. Each disturbance is recorded at the end of the disturbance event. The Clear Events button clears the voltage disturbance recorder. Events are overwritten when the event recorder reaches events. The Save button exports the events to a CSV format file. A text file viewer can open and read the file. EnerVista Viewpoint connects instantly to the PQMII via serial, ethernet or modem and automatically generates detailed overview, metering, power, demand, energy and analysis screens.
Installing EnerVista Launchpad see previous section allows the user to install a fifteen-day trial version of EnerVista Viewpoint. After the fifteen day trial period you will need to purchase a license to continue using EnerVista Viewpoint. Ensure that the PQMII device has been properly configured for either serial or Ethernet communications see previous sections for details. At this point, you will be required to provide a login and password if you have not already done so. Click the Device Setup button to open the Device Setup window.
If a communications error occurs, ensure that communications values entered in the previous step correspond to the relay setting values. Click OK when complete. Setpoint Entry Methods Prior to operating the PQMII, it is necessary to program setpoints to define system characteristics and alarm settings by one of the following methods: Front panel, using the keys and display.
Either of the above methods can be used to enter the same information. However, a computer makes information entry considerably easier.
Moreover, a computer allows setpoint files to be stored and downloaded for fast, error-free entry. Refer to 4. Setpoint messages are organized into logical groups or pages for easy reference. Messages may vary somewhat from those illustrated because of installed options, and messages associated with disabled features will be hidden.
This context sensitive operation eliminates confusing detail. Before accurate monitoring can begin, the setpoints on each page should be worked through, entering values either by local keypad or computer. These values are shown in all setpoint message illustrations.
Many of these factory default values can be left unchanged. At a minimum, however, setpoints that are shown shaded in 5. As a safeguard, the PQMII will alarm and lock-out until values have been entered for these setpoints. This includes user preferences, the RS and RS communication ports, loading of factory defaults, and user-programmable messages. After 3 seconds, the next default message in the sequence is displayed.
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