Mitsubishi MELDAS TRS50 Manual page 20

Item Check Signal
pin
CHA
input
CHB
Ground
Function
Input signal of OCP circuit.
Detection resistance differs according
to amplifier and so output per 1A also
varies.
Detection
R II A - 7 5
R M
TRS 150
A
OCP circuit ground
Care is required since this ground is
electrically insulated from AG/LG.
Therefore, connect the synchroscope
ground to AG, LG and CHB simultaneously.
3 1 mQ 0.031 V
0.020 V
2 0
3