Omron G3PW - MANUAL 2 User Manual page 107

Detailed Descriptions of Errors
E10: SSR Short-
Circuit
Isolating SSR Short-circuiting and Heater Burnout
1,2,3...
!Caution If there is an SSR short-circuit, a load current equivalent to a 100% output will
Using a Constant-
current Model
E11: SSR Open
Failure
E12: CT Failure
Procedure for Distinguishing CT Failure and Heater Burnout
1,2,3...
92
• An SSR short-circuit error occurs when either an SSR short-circuit failure
occurs or when 0 (None) is set for the Heater Burnout Alarm Operation
parameter [P14] and all the heaters have burned out.
• With a standard model of the G3PW Power Controller, this error will occur
if a heater burnout occurs when only one heater is being used.
• An SSR short-circuit error will occur if the power is turned ON with no load
connected. Parameter settings will still be enabled.
• Turn OFF the power to the Power Controller and to the heater and check
for heater burnout. If the heater is burned out, replace it.
If heater burnout cannot be easily confirmed, the following procedure can be
used to isolate SSR short-circuiting and heater burnout.
With a Constant-current Model, it is possible to distinguish between SSR
short-circuit and heater burnout alarms by using the following procedure.
1. Set the reference value to 0%.
2. Restart the G3PW by turning the power OFF and back ON or by using the
reset operation.
3. Monitor the load current in the monitor level once the G3PW restarts oper-
ation. If a large load current is flowing, there is an SSR short-circuit. If a
large load current is not flowing, there is a heater burnout.
flow. Before turning ON the power again, confirm that your equipment will not
be affected.
With a Constant-current Model, it is possible to distinguish between E10 (SSR
short-circuit) and E40 (heater burnout alarm) errors by assigning 1 (Alarm
level 1) or 2 (Alarm level 2) to the Heater Burnout Alarm Operation parameter
[P14].
This error occurs if there is an SSR open failure or the heater is not connected
to terminal T1 on the load terminal block and the output phase angle is 28%
min. If the heater is connected to terminal L1, connect it to terminal T1. Turn
ON the power again. If this does not remove the error, there is an SSR open
failure, and the operation of the Power Controller must be checked by
OMRON.
A CT failure error occurs when either the built-in CT has failed or the output
mode is set to constant current mode and all of the heaters connected to the
Power Controller have burned out.
Turn OFF the power to the Power Controller and to the heaters, and check for
heater burnout. If there is no heater burnout, then it means that the CT has
failed. In that case, the operation of the Power Controller must be checked by
OMRON. Consult with your OMRON representative.
If heater burnout cannot be easily confirmed, the following procedure can be
used to distinguish between CT failure and heater burnout. First check
whether the problem continues when the output mode is change, and then
perform this procedure.
1. Set the input value to 0%
Section 7-3