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PM2007M/PPE

For module calibration use Channel Sel. (below) to switch to

one of the two channel permanently. Calibrate the channel and

switch to the next channel. Calibrate the channel and set

Channel Sel to automatic for normal meter operation. This is

equal to the SA2007P’s Kc parameter, which is used for

channel balance.

The channel select parameter selects the source for energy

metering. (SA2007P’s CS parameter). The options are ‘0’ for

automatic, ‘1’ for channel 1 and ‘2’ for channel 2.

The modules earth leakage compensation value is set up with

this parameter. (SA2007P’s Ne parameter). The options are ‘0’

for a factor of 0.15, ‘1’ for a factor of 0.076 and ‘2’ for a factor of

0.032.

The memory map, as calculated from the settings in the

program, is listed by pressing “l”. It does not show the content

of the EEPROM.

Pressing “w” writes to the EEPROM. The EEPROM on the

PM2007M/PPE module will be updated with settings specified

by the program.

Pressing “t” triggers a reload. The SA2007P is triggered and

reloads the parameters from the EEPROM. The SA2007P will

reload the parameters every 1132 seconds. Reload also

happens with power-up.

The contents of the EEPROM is displayed by pressing “r”.

The program is exited by pressing “q”.

Channel Sel.

Earth Leak

LIST MEMORY

WRITE TO EEPROM

DEVICE RELOAD TRIGGER

READ FROM EEPROM

QUIT THE PROGRAM

PCB DESIGN

The module represents a Class 1 meter and is designed to

demonstrate the functionality and performance of both the

SA2007M and the SA2007P single phase metering circuits.

The SA2007M requires external settings and gain adjustment.

The SA2007P allows for complete digital calibration without

any external adjustments. The board can be configured for

either of the two ICs by means of jumper settings.

The module is a demonstration unit as well as a reference point

for the meter manufacturer. All the digital pins of the device

have at least one test point. Jumpers isolate LED’s and

counters from the device

The ground plane, which is connected to neutral, protects the

device from external noise and is used to connect the power

supply bypass capacitors C1 and C2. On the current input

resistors and the CT termination resistor loops are introduced

to cancel out the signal induced by the transformer's magnetic

field.

The 5V supply is de-coupled and routed directly to the power

pins of the IC.

GROUND PLANE

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