Gripping Power, Inc
23
EPS200 User s Manual
6. TROUBLESHOOTING
6.1. Introduction. This section provides the user with information on methods to resolve
problems that may be encountered in the event the EPS200 is not functioning properly.
To determine the fault condition, refer to the LCD display. It provides information to
determine whether the unit is functioning properly.
6.2. Overload Fault. An overload fault can be caused by an overcurrent trip point setting
that is too low, an output voltage setpoint is beyond the capability of the EPS200, for
the given load, or an electrical problem with the load.
The output overcurrent limit setpoint can be adjusted with a SI command. Increase the
setting, up to 1000 uA, and restart the unit. If the load current exceeds the over current
trip point, the unit will shut off the high voltage output, or abort a running program.
This allows the user to set a lower limit for the expected load impedance.
If voltage compliance monitoring is activated and voltage compliance cannot be
maintained, the unit will produce an overload fault,. Correct the problem by turning
off voltage compliance monitoring (CN command), reset the voltage setpoint to a lower
value (SV command) or inspect the load for shorts or other excessive loading.
If the unit continues to display the overload fault, disconnect the unit from the load and
turn on the high voltage. If the high voltage comes on and achieves the desired voltage
level, the unit is performing normally. If the unit continues to display the Overload
message when isolated from the load, it has experienced an internal failure and must be
returned for factory repair.
6.3. Alarm Output. The alarm output is set whenever an overload fault occurs. The alarm
output can be cleared by any user acknowledge, such as a status poll or a toggling of
the REMOTE/LOCAL switch.
6.4. No Output. If the EPS200 does not produce a high voltage output, verify that the unit
is properly powered and that the LCD display indicates a ready state. If the unit could
not achieve voltage compliance, or a overload condition exists, an 'Overload' message
will be displayed. If the unit has detected an internal fault, it will produce a coded error
message.
6.5. Component replacement. There are no user serviceable components in the any of the
EPS series power supplies. Any EPS unit should be returned to the factory for repair
or replacement.
WARNING: Dangerous high-voltages are present inside the
EPS200. Under no circumstances should the user attempt to
remove the cover or repair or adjust the internal circuitry.
