Chroma A620028 - 8. Self Test and Troubleshooting; 8.2 Troubleshooting Guide

Self Test & Troubleshooting
8-1
8. Self Test & Troubleshooting
8.1 Overview
Follow the steps described in this chapter to inspect the instrument and troubleshoot a
problem if the 62000H Series DC Power Supply with Solar Array Simulation is not operating
normally. Consult the sales agent or distributor if the information provided in this manual does
not resolve the problem.
8.2 Troubleshooting
Operational problems and suggestions for resolution:
Problem
Cause
Resolution
Incorrect measurement for V, I
Invalid readings due to aged
components.
Supply requires calibration.
See section 3.3.7
Calibration.
Output is not within SPEC
a
ccuracy.
Invalid readings due to aged
components.
Supply requires calibration.
See section 3.3.7
Calibration.
Over Temperature Protection
(OTP)
1. The ambient temperature is
too high.
2. The vent is blocked.
1. Operate the instrument
within a temperature
range of 0 - 40°C.
2. Clear the vent.
Over Power Protection (OPP)
The output power exceeds the
spec. or OPP settings.
Remove the over load or
increase the OPP settings.
Over Current Protection
(OCP)
The output current exceeds
the spec. or OCP settings.
Remove the over load or
increase the OCP settings.
Fan Fail Protection (FAN
LOCK)
1. The fan is out of order.
2. The feedback circuit is
abnormal.
Contact your local sales
agent if the protection state
cannot be reset.
Input Error Protection 1
AC FAULT
The voltage of the AC input
line is either too low or too
high.
Adjust the voltage if it
exceeds the spec. when
measuring the input voltage.
No output voltage
1. The output voltage
feedback is abnormal.
2. The D/D power stage is
damaged.
Contact your local sales
agent if the protection state
cannot be reset.
Over Voltage Protection
(OVP)
The output voltage exceeds
the spec. or OVP settings.
Check the OVP settings.
Contact your local sales
agent if the protection state
cannot be reset.
Unable to control DC Power
Supply via GPIB
1. The address of DC Power
Supply is incorrect.
2. The GPIB cable is loose
or
disconnected
1. Update the address.
2. Check the cable
connection and secure it
with screws.
Current sharing cable
connection error
(C/S CABLE ERR.)
1. The current sharing cable
is connected when used in
series mode.
1. Check if the cables are
connected correctly.
2. Contact your local sales