Section 4 Control Module Monitored Parameter Details; Introduction; Analog Readings - nvent RAYCHEM T2000 Installation, Operating And Maintenance Manual

SECTION 4 CONTROL MODULE MONITORED PARAMETER DETAILS

4.1 INTRODUCTION

4.2 ANALOG READINGS

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This section provides a brief summary of each of the measured and calculated parameters
that the control module provides to the user. Detailed information regarding settings, alarms
limits, etc. may be found in Section 3 of this manual.
For detailed information regarding the display of these variables using an external upstream
programming device, refer to the appropriate operating manual for that device.
4.2.1 CONTROL TEMPERATURE
Purpose: This is the temperature that the control module uses to determine whether its output
switch should be on or off. Depending on the TS CONTROL MODE setting and whether one or
two RTDs are installed, the CONTROL TEMPERATURE may be derived from TS 1 or TS 2 or a
com-bination of the two temperatures. See Section 3.4.11 of this manual for further details
regarding the TS CONTROL MODE settings.
IMPORTANT: The CONTROL TEMPERATURE will not be displayed if the control module is
configured as an ATC SLAVE.
4.2.2 TS 1 TEMPERATURE
Purpose: This temperature is the value that the control module is reading from the temperature
sensor connected to its RTD1 input. Depending on the TS CONTROL MODE, it may be used to
determine the CONTROL TEMPERATURE (see Section 4.2.1 above).
IMPORTANT: If the RTD1 input is not being used by the control module, then the
TS 1 TEMPERATURE is not displayed.
4.2.3 TS 2 TEMPERATURE
Purpose: This temperature is the value that the control module is reading from the temperature
sensor connected to its RTD2 input. Depending on the TS CONTROL MODE, it may be used to
determine the CONTROL TEMPERATURE (see Section 4.2.1 above).
IMPORTANT: If the RTD2 input is not being used by the control module, then the
TS 2 TEMPERATURE is not displayed.
4.2.4 LOAD CURRENT
Purpose: The LOAD CURRENT reading indicates the average current being drawn by the
heating cable.
IMPORTANT: The control module calculates the LOAD CURRENT using the current sensed by
the remote current transformer module (CT 2000) multiplied by the CURRENT TURNS RATIO to
yield an adjusted current value.
4.2.5 GROUND FAULT CURRENT
Purpose: If the control module detects any leakage current in the heating circuit, it will indicate
the level in mA.
IMPORTANT: To minimize nuisance alarms, the control module will not report a leakage
current of less than 20 mA.
4.2.6 VOLTAGE
Purpose: The voltage reading indicates the average heating circuit voltage being measured by
the control module.
IMPORTANT: The control module calculates this parameter using the voltage powering the
control module multiplied by the VOLTAGE TURNS RATIO to yield an adjusted voltage value.