Kikusui PWX1500H, User Manual

Page: 39 / 131

PWX
39
Protection Functions and Alarms
Basic Functions
2
 Checking OVP and OCP operation
The OVP and OCP functions are designed to protect the load.
If you use the CONFIG settings to limit the voltage setting (CF15: ON), you will no longer be
able to set the output voltage to a value that exceeds the OVP trip point. This means that you
won’t be able to check the operation of the OVP function.
If you use the CONFIG settings to limit the current setting (CF14: ON), you will no longer be
able to set the output current to a value that exceeds the OCP trip point. This means that you
won’t be able to check the operation of the OCP function.
To check the operation of the OVP function, carry out the procedure below.
1
Check that the OUTPUT LED in the display area is turned off.
2
Set the output voltage to a value lower than the OVP trip point.
3
Press OUTPUT to turn output on.
The OUTPUT LED lights.
4
Slowly turn the VOLTAGE knob clockwise.
When the output voltage exceeds the OVP trip point, the front panel display area’s
ALARM LED lights and the OUTPUT LED blinks to indicate that the OVP function has
been activated.
5
Check that output has turned off.
6
Turn the POWER switch off.
To check the operation of the OCP function, carry out the procedure below.
1
Short the output terminal.
2
Turn the POWER switch on.
3
Check that the OUTPUT LED in the display area is turned off.
4
Set the output current to a value lower than the OCP trip point.
5
Press OUTPUT to turn output on.
The OUTPUT LED lights.
6
Slowly turn the CURRENT knob clockwise.
When the output current exceeds the OCP trip point, the front panel display area’s
ALARM LED lights, and the OUTPUT LED blinks to indicate that the OCP function has
been activated.
7
Check that output has turned off.
If you do not change the output settings, the OVP or OCP function will be activated again.
Lit
Blinking (in orange)
Display of the OVP activation
alarm
Lit
Blinking (in orange)
Display of the OCP activation
alarm