22
CAUTION
- This function is available in the PA10-5B, PA18-1.2B, PA18-2B,
PA18-3B, PA18-5B, PA36-1.2B, PA36-2B and PA36-3B only.
- If no remote sensing cable is connected despite the fact that the
remote sensing selector switch is set to the REM position, the
output voltage may be too high and the load may be broken. Be
sure to set the selector switch to the LCL position when remote
sensing is not carried out.
- If the load is too apart from the PA-B series, inductance and
capacitor of the load cable may cause oscillation. Connect an
electrolytic capacitor of approximately 100 µF to the load
terminals in such a case.
5-3
．
OVP
＊
The OVP protects the load from over-load. The ALARM LED
goes on when the OVP circuit works. Shut off the POWER
switch once and turn it on again to reset the alarm.
1) Turn the OVP control fully clockwise with the adjustment
screwdriver supplied with the PA-B series.
2) Output the limit voltage for over-voltage protection. Turn the
OVP control counterclockwise slowly with the adjustment
screwdriver until the OVP circuit works.
3) Cut off output when the voltage between the output terminals of
the PA-B series reaches the preset OVP value.
＋
－
＋
S
－
S
Load
Vo
Vo
≦
Rated voltage
Use a shielded cable or twisted pair wires.
