Displayed Alarm Indicators - nvent RAYCHEM T2000 Installation, Operating And Maintenance Manual

3.3 DISPLAYED ALARM INDICATORS

Under certain conditions, the three-character display is used to indicate critical alarms or
unique operating conditions. For most of these indications, the control module output is turned
off, not allowing any current to flow to the heating circuit. These alarm conditions may indicate
that the RAYCHEM T2000 HTC or the heating load require immediate attention.
This section describes in detail the various types of alarm indications that the control module
may display.
3.3.1 TEMPERATURE SENSOR FAILURE
When the temperature sensor(s), designated as the control temperature sensor(s), fail to
operate properly, the output will be switched off and the display will appear as follows:
Flashing
Always Displayed
3.3.2 OVERCURRENT TRIP
When the control module encounters a severe overcurrent situation, the output will be switched
off and the display will appear as follows:
Flashing
Displayed In Place of Current Load
3.3.3 GROUND FAULT CURRENT TRIP
When the control module measures a ground fault current in excess of the GF TRIP CURRENT
the output will be switched off and the display will appear as follows:
Flashing
Displayed in Place of Load Current
3.3.4 TEMPERATURE DISPLAY RANGE OVERFLOW
When the control module has to display a measured control temperature or a CONTROL
SETPOINT temperature greater than the display maximum of 999, the display will appear as
follows:
Flashing
Displayed In Place of Control Temperature or
Control Setpoint Temperature
IMPORTANT: In order to view the actual temperature value, the operator must use an external
upstream programming device.
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