GE Pqm 2 Manual

CHAPTER 5: SETPOINTS
PQMII POWER QUALITY METER  – INSTRUCTION MANUAL5–5
5.2 S1 PQMII Setup
5.2.1 Description
General settings to conf igure the PQMII are entered on this page. This includes user 
preferences, the RS485 and RS232 communication ports, loading of factory defaults, and 
user-programmable messages.
5.2.2 Preferences
PATH: SETPOINTS  S1 PQMII SETUP  PREFERENCES
•DEFAULT MESSAGE TIME: Up to 10 default messages can be selected to scan 
sequentially when the PQMII is left unattended. If no keys...

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CHAPTER 5: SETPOINTS
5.2.3 Setpoint Access
PATH: SETPOINTS  S1 PQMII SETUP  SETPOINT ACCESS
To enable setpoint access, follow the steps outlined in the following diagram:
The factory default access code for the PQMII is 1.
If three attempts are made to enable setpoint access with an incorrect code, the value of 
the setpoint access setpoint changes to “Disabled” and the above procedure must be 
repeated.
Once setpoint access is enabled, the Program...

CHAPTER 5: SETPOINTS
PQMII POWER QUALITY METER  – INSTRUCTION MANUAL5–7
NoteSetpoints can be changed via the serial ports regardless of the state of the setpoint 
access feature or the state of an input switch assigned to setpoint access.
To change the setpoint access code, enable setpoint access and perform the steps as 
outlined below:
If an attempt is made to change a setpoint when setpoint access is disabled, the 
SETPOINT 
ACCESS: DISABLED
 message is displayed to allow setpoint access to be...

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CHAPTER 5: SETPOINTS
•MODBUS COMMUNICATION ADDRESS: Enter a unique address from 1 to 255. The 
selected address is used for all serial communication ports. Address 0 represents a 
broadcast message to which all PQMIIs will listen but not respond. Although addresses 
do not have to be sequential, no two PQMIIs can have the same address or there will 
be conflicts resulting in errors. Generally, each PQMII added to the link uses the next 
higher address,...

CHAPTER 5: SETPOINTS
PQMII POWER QUALITY METER  – INSTRUCTION MANUAL5–9
5.2.6 Clock
PATH: SETPOINTS  S1 PQMII SETUP  CLOCK
•SET TIME/DATE: These messages are used to set the time and date for the PQMII 
software clock.
The PQMII software clock is retained for power interruptions of approximately thirty 
days. A Clock Not Set alarm can be enabled so that an alarm will occur on the loss of 
clock data. The time and date are used for all time-stamped data. If the clock has not 
been set , a “?” will...

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CHAPTER 5: SETPOINTS
5.2.7 Calculation Parameters
PATH: SETPOINTS  S1 PQMII SETUP  CALCULATION PARAMETERS
The PQMII can be programmed to calculate metering quantities and demand by various 
methods.
•EXTRACT FUNDAMENTAL: The PQMII can be programmed to calculate all metering 
quantities using true RMS values or the fundamental component of the sampled data. 
When this setpoint is set to “Disable”, the PQMII will include all harmonic content , up to...

CHAPTER 5: SETPOINTS
PQMII POWER QUALITY METER  – INSTRUCTION MANUAL5–11
•POWER DEMAND TYPE: Three real/reactive/apparent power demand calculation 
methods are available: thermal exponential, block interval, and rolling interval (see the 
Demand Calculation Methods table below). The three phase real/reactive/apparent 
power demand is calculated.
•POWER DEMAND TIME INTERVAL: Enter the time period over which the power 
demand calculation is to be performed.
•ENERGY COST PER kWh: Enter the cost per kWh that...

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CHAPTER 5: SETPOINTS
5.2.8 Clear Data
PATH: SETPOINTS  S1 PQMII SETUP  CLEAR DATA
•CLEAR ENERGY VALUES: Enter “Yes” to clear all the energy used data in the A1 
METERING 
 ENERGY actual values subgroup. The TIME OF LAST RESET date under 
the same subgroup is updated upon issuing this command.
•CLEAR MAX DEMAND VALUES: Enter “Yes” to clear all the maximum power and 
current demand data under the actual values subgroup 
A1 METERING  DEMAND. 
The...

CHAPTER 5: SETPOINTS
PQMII POWER QUALITY METER  – INSTRUCTION MANUAL5–13
and date associated with each message will be updated to the current date upon 
issuing this command.
•CLEAR MIN/MAX POWER VALUES: Enter “Yes” to clear all the minimum/maximum 
power data under the actual values subgroup 
A1 METERING  POWER. The time and 
date associated with each message will be updated to the current date upon issuing 
this command.
•CLEAR MIN/MAX FREQUENCY VALUES: Enter “Yes” to clear all the minimum/maximum...

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CHAPTER 5: SETPOINTS
5.2.10 Trace Memory
PATH: SETPOINTS  S1 PQMII SETUP  TRACE MEMORY
The Trace Memory feature involves a separate sampling data stream. All input channels 
are sampled continuously at a rate of 16 times per cycle. Using a single-cycle block 
interval, the input samples are checked for trigger conditions as per the trigger setpoints 
below. Note that the normal sampling burst (64 samples/cycle, 2 cycles) used for all 
 TRACE MEMORY...