GE Pqm 2 Manual

CHAPTER 7: APPLICATIONS
PQMII POWER QUALITY METER  – INSTRUCTION MANUAL7–19
Total Space = (196224 / Record Size) – 1
As in the example, the total space calculated would be 196224 / 26 – 1 = 7546.07. This 
equates to 7546 records with 28 bytes of unused memory at the end of Block 1536. The 
total amount of space used in the structure can also be found in the Log Header in the Log 
Total Records f ield.
Address 1270h in the PQMII Memory Map is the Holding Register for the f irst available 
parameter for...

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CHAPTER 7: APPLICATIONS
7.6.5 Data Log Parameters
Listed below are the parameters available for capturing data via the Data Logger. Note 
that these parameters will be placed within the Record structure of the Data Log in the 
order and size that they appear in this table.
where: I = current; V = Voltage; P = Real Power; Q = Reactive Power; S = Apparent Power; 
PF = Power Factor; THD = Total Harmonic DistortionTable 7–1: Data Log Parameters
DATA LOG...

CHAPTER 7: APPLICATIONS
PQMII POWER QUALITY METER  – INSTRUCTION MANUAL7–21
7.7 Reading Long Integers from the Memory Map
7.7.1 Description
The PQMII memory map contains data formatted as a long integer type, or 32 bits. 
Because the Modbus protocol maximum register size is 16 bits, the PQMII stores long 
integers in 2 consecutive register locations, 2 high order bytes, and 2 low order bytes. The 
data can be retrieved by the following logic:
7.7.2 Example
Reading a positive 3 Phase Real Power actual...

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CHAPTER 7: APPLICATIONS
Following the method described above:
DATA VALUE = (FF3A × 2
16) + EA7B hexadecimal
= (65338 × 216) + 60027 converted to decimal
= 4282051195 decimal
The most signif icant bit of the High Order register is set , therefore the Data Value is:
DATA VALUE = DATA VALUE – 2
32 = 4282051195 – 4294967296 = –12916101
Multiply the Data Value by 0.01 kW according to the Units and Scale parameter. The 
resultant 3 Phase Real Power value read...

CHAPTER 7: APPLICATIONS
PQMII POWER QUALITY METER  – INSTRUCTION MANUAL7–23
7.8 Pulse Input Application
7.8.1 Description
The PQMII has up to 4 Logical Switch Inputs that can be conf igured as Pulse Input 
Counters. Variables to consider when using the PQMII as a Pulse Input Counter are:
•PQMII Switch Input A(D) Function: Def ines the functionality to be provided by the 
PQMII Switch Input . For use as a Pulse Input Counter, the PQMII Switch Input to be 
used must be assigned as either Pulse Input 1, 2,...

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CHAPTER 7: APPLICATIONS
7.9 Pulse Totalizer Application
7.9.1 Description
The PQMII has up to 4 Logical Switch Inputs that can be conf igured as Pulse Input 
Counters. One common application of these Pulse Inputs is their use as an energy totalizer 
for more than one circuit . One PQMII can totalize input from up to 4 different sources and 
sum these results into a single register. Variables to consider when using the PQMII as a 
Pulse Input Counter...

CHAPTER 7: APPLICATIONS
PQMII POWER QUALITY METER  – INSTRUCTION MANUAL7–25
FIGURE 7–4: Multiple Metering Locations
Various operating parameters must be taken into account . The PQMII Switch Inputs 
require a minimum 100 ms operation time to be detected. Therefore the Pulse Output 
Width should be equal to or greater than 100 ms. The duration of the contact operation 
can be indef inite. The internal Switch Input circuit of the PQMII is switched on and off at the 
times when the PQMII is reading the...

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CHAPTER 7: APPLICATIONS 

PQMII POWER QUALITY METER  – INSTRUCTION MANUAL8–1
PQMII Power Quality Meter
Chapter 8: Warranty
Digital Energy
War ranty
8.1 GE Multilin Device Warranty
8.1.1 Warranty Statement
General Electric Multilin (GE Multilin) warrants each device it manufactures to be free from 
defects in material and workmanship under normal use and service for a period of 24 
months from date of shipment from factory.
In the event of a failure covered by warranty, GE Multilin will undertake to repair or replace 
the device...

8–2PQMII POWER QUALITY METER  – INSTRUCTION MANUAL
CHAPTER 8: WARRANTY