GE Pqm 2 Manual

							CHAPTER 6: MONITORING
PQMII POWER QUALITY METER  – INSTRUCTION MANUAL6–31
records. If an exact replacement model is required, the MAIN PROGRAM VERSION, MOD 
NUMBER(S)
, ORDER CODE, and SERIAL NUNBER should be specif ied with the order.
•SERIAL NUMBER: This is the serial number of the PQMII. This should match the number 
on the label located on the back of the PQMII.
•DATE OF MANUFACTURE: This is the date the PQMII was f inal tested at GE Multilin.
•DATE OF CALIBRATION: This is the date the PQMII was last calibrated. 
						

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CHAPTER 6: MONITORING 
						

							PQMII POWER QUALITY METER  – INSTRUCTION MANUAL7–1
PQMII Power Quality Meter
Chapter 7: Applications
Digital Energy
Appli ca tions
7.1 Event Recorder
7.1.1 List of Events
The Event Recorder stores all online data in a section of non-volatile memory when
triggered by an event . The PQMII def ines any of the following situations as an event:
Analog Input Alternate Alarm
Analog Input Alternate Alarm Clear
Analog Input Main Alarm
Analog Input Main Alarm Clear
Clear Event Record
Clock Not Set Alarm
Clock Not Set Alarm Clear
COM1 Fail Alarm
COM1 Fail Alarm Clear
COM2 Fail Alarm
COM2 Fail Alarm Clear
Current THD Alarm
Current THD Alarm Clear
Current Unbalance Alarm
Current Unbalance Alarm Clear
Data Log 1 Alarm
Data Log 1 Alarm Clear
Data Log 2 Alarm 
						

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Data Log 2 Alarm Clear
kVA Demand Alarm
kVA Demand Alarm Clear
Negative kvar Alarm
Negative kvar Alarm Clear
Negative kvar Demand Alarm
Negative kvar Demand Alarm Clear
Negative kW Alarm
Negative kW Alarm Clear
Negative kW Demand Alarm
Negative kW Demand Alarm Clear
Neutral Current Demand Alarm
Neutral Current Demand Alarm Clear
Neutral Overcurrent Alarm
Neutral Overcurrent Alarm Clear
Overcurrent Alarm
Overcurrent Alarm Clear
Overfrequency Alarm
Overfrequency Alarm Clear
Overvoltage Alarm
Overvoltage Alarm Clear
Parameters Not Set Alarm
Parameters Not Set Alarm Clear
Phase A Current Demand Alarm
Phase A Current Demand Alarm Clear
Phase B Current Demand Alarm
Phase B Current Demand Alarm Clear
Phase C Current Demand Alarm
Phase C Current Demand Alarm Clear
Phase Reversal Alarm
Phase Reversal Alarm Clear
Positive kvar Alarm
Positive kvar Alarm Clear
Positive kvar Demand Alarm
Positive kvar Demand Alarm Clear
Positive kW Alarm 
						

							CHAPTER 7: APPLICATIONS
PQMII POWER QUALITY METER  – INSTRUCTION MANUAL7–3
Positive kW Alarm Clear
Positive kW Demand Alarm
Positive kW Demand Alarm Clear
Power Factor Lag 1 Alarm
Power Factor Lag 1 Alarm Clear
Power Factor Lag 2 Alarm
Power Factor Lag 2 Alarm Clear
Power Factor Lead 1 Alarm
Power Factor Lead 1 Alarm Clear
Power Factor Lead 2 Alarm
Power Factor Lead 2 Alarm Clear
Power Off
Power On
Pulse Count Total Alarm
Pulse Input 1 Alarm
Pulse Input 1 Alarm Clear
Pulse Input 2 Alarm
Pulse Input 2 Alarm Clear
Pulse Input 3 Alarm
Pulse Input 3 Alarm Clear
Pulse Input 4 Alarm
Pulse Input 4 Alarm Clear
Pulse Input Total Alarm Clear
Reset
Self Test Alarm
Self Test Alarm Clear
Setpoint Access Enabled
Switch A Alarm
Switch A Alarm Clear
Switch B Alarm
Switch B Alarm Clear
Switch C Alarm
Switch C Alarm Clear
Switch D Alarm
Switch D Alarm Clear
Time Alarm 
						

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CHAPTER 7: APPLICATIONS
Time Alarm Clear
Trace Memory Trigger
Undercurrent Alarm
Undercurrent Alarm Clear
Underfrequency Alarm
Up to 150 events can be stored in non-volatile memory for retrieval and review. The
Event Recorder can be enabled, disabled, or cleared via the keypad or serial port . The
following data is saved when an event occurs:
Analog Input (high)
Analog Input (low)
Date - Month/Day
Date - Year
Event Cause
Event Number
Frequency
I Unbalance
Ia
Ia Demand
Ia THD
Ib
Ib Demand
Ib THD
Ic
Ic Demand
Ic THD
In
In Demand
In THD
Internal Fault Error Code
kVAh (high)
kVAh (low)
Negative kvarh (high)
Negative kvarh (low)
Negative kWh (low)
Negative kWh (high)
P3 (high)
P3 (low) 
						

							CHAPTER 7: APPLICATIONS
PQMII POWER QUALITY METER  – INSTRUCTION MANUAL7–5
P3 Demand (high)
P3 Demand (low)
Pa (high)
Pa (low)
Pb (high)
Pb (low)
Pc (high)
Pc (low)
PF3
PFa
PFb
PFc
Positive kvarh (high)
Positive kvarh (low)
Positive kWh (high)
Positive kWh (low)
Q3 (high)
Q3 (low)
Q3 Demand (high)
Q3 Demand (low)
Qa (high)
Qa (low)
Qb (high)
Qb (low)
Qc (high)
Qc (low)
S3 (high)
S3 (low)
S3 Demand (high)
S3 Demand (low)
Sa (low)
Sa (high)
Sb (high)
Sb (low)
Sc (high)
Sc (low) 
						

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Switches and Relays States
T ime - Hours/Minutes
Time - Seconds
Trace Memory Trigger Cause
Underfrequency Alarm Clear
Undervoltage Alarm
Undervoltage Alarm Clear
V Unbalance
Vab (high)
Vab (low)
Vab THD
Van (high)
Van (low)
Van THD
Vbc (high)
Vbc (low)
Vbc THD
Vbn (high)
Vbn (low)
Vbn THD
Vca (high)
Vca (low)
Vcn (high)
Vcn (low)
Vcn THD
Voltage THD Alarm 
Voltage THD Alarm Clear
Voltage Unbalance Alarm
Voltage Unbalance Alarm Clear
7.1.2 Access to Event Recorder Information
There are two ways to access Event Recorder Information:
• Access only the Records and data you wish to view
• Access the entire Event Record.
The Event Recorder is indexed by Event Number (1 to 150). To access a specif ic Event , the 
Event Number must be written to the PQMII memory map location 12C0h. The data 
specif ic to that Event can be read starting at memory map location 0AE0h. The specif ic  
						

							CHAPTER 7: APPLICATIONS
PQMII POWER QUALITY METER  – INSTRUCTION MANUAL7–7
Event Number must be known to read the Event Recorder in this fashion. However, this 
Event Number is usually not known and the entire Event Record must be read. The easiest 
way to do this is to read the PQMII Memory Map location 0AD0h (Total Number of Events 
Since Last Clear) and loop through each Event Number indicated by the value from 0AD0h, 
reading the associated data pertaining to each Event . This requires 1 to 150 serial reads of 
170 bytes each. Once this data is obtained, it can be interpreted based upon the format of 
each value. It is important to note that some memory map parameters are 32 bits (4 bytes) 
long and require 2 registers to contain their value, one for the two high bytes and one for 
the two low bytes.
NoteThe operation of the Voltage Disturbance Recorder is similar to the Event Recorder. The 
differences between the two recorders are the Modbus addresses, the event data, and the 
number of events (150 compared to 500).
NoteThe PQMII uses two different group of samples. PQMII samples at the rate of 64 samples/
cycle for metering calculations and uses the last 2 cycle data (128 samples) for calculating 
the RMS value. An RMS value based on separate group of samples (sample rate of 16 
samples/cycle) is used for making faster decisions for pickup and dropout of monitoring 
elements. 
The event time recorded in the event recorder for monitoring elements is based on the RMS 
value from 16 samples but the metered RMS values is based on the previous 128 samples  
(2 cycle data) at the time of the trigger. Since the event recorder metered data and trigger 
data are based on independent and different periods of sample sizes, the metered data in 
the event recorder may be different from the RMS value at the time of the trigger. The 
accuracy specif ications should not be applied for the data in event recorder.  
						

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CHAPTER 7: APPLICATIONS
7.2 Interfacing Using Hyperterminal
7.2.1 Upgrading Firmware
When upgrading f irmware, the PQMII may appear to lockup if there is an interruption on 
the communication port during the upload process. If the PQMII does not receive the 
necessary control signals for conf iguration during f irmware upload, it could remain in a 
halted situation until reinitialized. The steps used by the EnerVista PQMII Setup Software to 
upload f irmware to the PQMII are as follows:
1. Prepare the PQMII for f irmware upgrade by saving setpoints to a f ile.
2. Erase the flash memory and verify it to be blank.
3. Upload the new f irmware.
4. Verify the CRC when upload is complete.
5. Run the new code.
If the PQMII is interrupted prior to erasing the flash memory, it could be halted in a mode 
where the display will read 
PQMII FLASH LOADER ENTER TEXT “LOAD”.
If the computer being used to upload f irmware has a screen saver enabled, and the screen 
saver operates during the upload process, the communication port will be interrupted 
during the launch of the screen saver. It is recommended to disable any screen saver prior 
to firmware upload. 
There are two ways to alleviate this condition: one is to cycle power to the PQMII; the 
second is to interface with the PQMII using a terminal program, such as Hyperterminal, 
and perform the upload process manually.
7.2.2 Cycling Power
Remove and then re-apply control power to the PQMII. The PQMII should then run the 
existing f irmware in its flash memory. If the PQMII does not run the f irmware in flash 
memory, attempt the second method using Hyperterminal.
7.2.3 Hyperterminal
Hyperterminal is a terminal interface program supplied with Microsoft Windows. The 
following procedure describes how to setup Hyperterminal.
Run the program “hypertrm.exe” which is usually located in the 
Accessories folder of your PC.
A Connection window will appear asking for a name. Use a name such 
as “PQMII” for the connection and click on OK. The following window 
appears.