Maintenance Data - nvent RAYCHEM T2000 Installation, Operating And Maintenance Manual

4.3 MAINTENANCE DATA

4.2.7 POWER
Purpose: Load power provides an indication of the average power being consumed by
the heat trace cable.
IMPORTANT: The control module calculates load power by multiplying the average adjusted
voltage reading by the average adjusted current reading. Both the VOLTAGE TURNS RATIO and
the CURRENT TURNS RATIO affect the load power reading.
4.2.8 TEST TRACING
Purpose: The TEST TRACING feature provides an easy method of turning the output switch on.
This is done by temporarily overriding the temperature control, without having to modify the
CONTROL SETPOINT temperature or any other configuration parameter.
Procedure: Select the "TEST TRACING" function on the external upstream programming device
to force the output switch on for approximately 20 to 30 seconds. After the test time has
expired, the unit will automatically revert back to normal operation.
IMPORTANT:
• This feature only overrides the temperature control, it does not override other control
parameters such as power limiting.
• If load shedding is active then the TEST TRACING function is inhibited.
4.3.1 MAX / MIN TEMPERATURE VALUES
MAX CONTROL TEMP
MIN CONTROL TEMP
TS 1 MAX TEMP
TS 1 MIN TEMP
TS 2 MAX TEMP
TS 2 MIN TEMP
Purpose: This feature indicates the maximum and minimum temperatures recorded by the
control module since the last time the values were reset. It may be useful to log the maximum/
minimum temperatures experienced on a particular heating circuit for the purposes of trouble
shooting or gathering data for future design criteria. The temperature values are written to the
control module's non-volatile memory once every 24 hours or whenever the user resets any
maintenance data. Max/min temperatures are recorded for TS 1, TS 2 and the CONTROL TS.
Range: Can only be reset (cleared) by the operator.
Procedure: The max/min temperatures may be reset using external upstream programming
device. See the appropriate manual for the proper procedure. Resetting any one of the
temperatures will reset all of them.
IMPORTANT:
• If the control module is configured as an ATC SLAVE then MAX CONTROL TEMP and
MIN CONTROL TEMP are not displayed.
• If the control module does not use a particular temperature sensor then that temperature
sensor's MAX TEMP and MIN TEMP are not displayed.
4.3.2 POWER ACCUMULATOR
Purpose: This feature indicates the total power consumption of the heating circuit since
the last time the POWER ACCUMULATOR was reset. It may be useful to log the amount of
power consumed on a particular heating circuit for the purposes of energy management or
gathering of data for future design criteria. The value of this accumulator is written to the
control module's non-volatile memory once every 24 hours or whenever the user resets any
maintenance data.
Procedure: The POWER ACCUMULATOR may be reset to zero using an external upstream
programming device. See the appropriate manual for the proper procedure.
IMPORTANT: The POWER ACCUMULATOR value will roll over to zero when the upper limit
of the POWER ACCUMULATOR has been exceeded. This upper limit for the CM 2000+ is
214,748,364.7 kW-hours and the upper limit for the CM 2000 is 429,496,729.5 kW-hours.
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