Alarms 2817 - 2904 Dpm Temperature - Siemens Maxum II Manual

4.6.14

Alarms 2817 - 2904 DPM Temperature

GCP Alarm Descriptions 2817 - 2904 - DPM Temperature
The following tables list the alarm number (#), type (+ information, ? warning, ! error) alarm
text, description, and actions.
# ! Text
2817 ! 12V Error on %4
2818 ! Setpoint Board Missing on
%4
2819, ! RTD Failure [1 - 2] on %4
2820
2823, ! SSR Cable [1 - 2] Missing
2824 on %4
2825 ! A/D Failure on %4
2899, ! Over Temp Shutdown [1 -
2900 2] on %4
Maxum edition II Analyzer General Maintenance
Manual, August 2018, A5E42019842001
4.6 Alarm Codes, Descriptions, and Suggested Actions
Description
Temperature controller PIC: The 12 volt
supply is not working normally.
Temperature controller PIC: The OTS
and temperature limit configuration
board (t-rating configurator) is not detec‐
ted on J10. The temperature controller
is non-functional.
Temperature controller PIC: An attempt
was made use a temperature channel
that has an invalid RTD signal. The RTD
is shorted or open circuit. The tempera‐
ture controller cannot function.
System error
Temperature controller PIC: An Analog
to Digital Converter chip does not work
properly. The flag will be set if the A/D
internal calibration cycle is not completed
within a pre-determined period of time or
the A/D does not report any valid data
within a pre-defined timeout period.
Note: A firmware problem affecting the
version 1.002 of the Temperature con‐
troller PIC may cause an A/D failure flag
to show-up occasionally following a PIC
reset. This is not a sign of a defective
A/D converter.
Temperature controller PIC: The Over-
Temp Shutdown function is active on
channel #1. The heater cannot be turned
on. The overtemp shutdown condition in‐
dicates that the temperature reached the
absolute limit..
General Maintenance and Troubleshooting
Action
Disconnect the RTDs and feedthrough
connector. If the error does not go
away, replace the DPM.
If the error goes away, confirm that
there is no continuity between any RTD
lead and ground.
Install or replace the TLIM-OTS T-rat‐
ing configuration board.
Verify the 4-wire temperature sense
RTD on channel #1. The RTD resist‐
ance must be between 81 and 269
ohms. Confirm that none of the leads
have any continuity with ground.
Contact Customer Support.
Cycle power.
If the error repeats consistently, replace
the module.
Check for:
A disconnected TLIM-OTS configura‐
tion board.
A temperature setpoint too high for the
allowed T-rating.
A defective OTS or T-limit temperature
probe.
A defective DPM
A defective (shorted) SSR.
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