Amphenol Kaye CTR-40, Руководство пользователя, Страница: 80 / 84

69
12 Troubleshooting
Problem Causes and Solutions
The controller display flashes “
Cut-
out
” and the heater does not
operate
The display flashs “
Cut-out
” alternately with the process
temperature.
• If the process temperature displayed seems grossly in error, consult the
following problem: ‘The display flashes “
Cut-out
” and an incorrect
process temperature’.
• Normally, the cutout disconnects power to the heater when the bath
temperature exceeds the cutout set-point causing the temperature to
drop back down to a safe value. If the cutout mode is set to “AUTO”, the
heater switches back on when the temperature drops. If the mode is set
to “RESET”, the heater only comes on again when the temperature is re-
duced and the cutout is manually reset by the operator, see Section 8.10,
Cutout. Check that the cutout set-point is adjusted to 10 or 20°C above
the maximum bath operating temperature and that the cutout mode is
set as desired.
• If the cutout activates when the bath temperature is well below the cut-
out set-point or the cutout does not reset when the bath temperature
drops and it is manually reset, then the cutout circuitry or the cutout
thermocouple sensor may be faulty or disconnected. Contact Amphenol
Advanced Sensors Customer Service for assistance.
The display flashes “cutout” and an
incorrect process temperature
The problem may be that the controller’s voltmeter circuit is not function-
ing properly.
• A problem could exist with the memory back-up battery. If the battery
voltage is insufficient to maintain the memory, data may become scram-
bled causing problems. A nearby large static discharge may also affect
data in memory. Verify that the parameters on the Report of Test. are
accurate. Cycle the power off, disconnect the bath from AC, and then re-
start the bath.
•
If the problem reoccurs, the battery should be replaced. Contact
Amphenol Advanced Sensors Customer Service for assistance.
•
If initializing the memory does not remedy the problem, there may be a
failed electronic component. Contact Amphenol Advanced Sensors
Customer Service for assistance.
•
The controller may need to be reset. Perform the following Factory Re-
set Sequence.
Factory Reset Sequence. Hold the SET and EXIT buttons down at the
same time while powering up the instrument. The instrument display
shows '
-init-
', the model number, and the firmware version. Each of
the controller parameters and calibration constants must be repro-
grammed. The values can be found on the Report of Test that was
shipped with the instrument.