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IMPORTANT: This alarm should only be used for applications where a product that is sensitive
to over temperature is involved. General usage may result in nuisance alarms due to the flow
of hot product or steam out. This may be a case where the alarm should be enabled and non-
latching temperature alarming should be used. A high temperature condition resulting from a
forced on failure of the heating circuit should first be alarmed by the SWITCH FAILURE ALARM
(see Section 3.5.16 for more information).
3.5.3 LOW TS 1 TEMPERATURE ALARM
Purpose: If enabled, the LOW TS 1 TEMP ALARM allows for alarming of low temperature
conditions as sensed by the temperature sensor connected to the RTD1 input.
Alarm Mask: ENABLE or DISABLE
Range: –76 to 1058°F (–60 to 570°C)
Procedure: Adjust the LOW TS 1 TEMP ALARM temperature setpoint to the desired value.
Note that the LOW TS 1 TEMP ALARM must be enabled in order to adjust the LOW TS 1 TEMP
ALARM temperature setpoint.
IMPORTANT:
• This alarm should normally be enabled and the setpoint should be appropriate for the
heating application. Maintaining a minimum 9°F (5°C) differential between the LOW TS 1
TEMP ALARM temperature setpoint and the CONTROL SETPOINT temperature will minimize
nuisance alarming due to momentary dips in temperature. Another alternative to this is to
configure the control module to use non-latching temperature alarming.
• This alarm must be enabled and its setpoint must be below the CONTROL SETPOINT
temperature if the load shedding fail safe mode uses the TS 1 temperature reading.
3.5.4 TS 1 FAILURE ALARM
Purpose: Enabling the TS 1 FAILURE alarm will provide an indication of an open or shorted
failure of the temperature sensor connected to the RTD1 input.
Alarm Mask: ENABLE or DISABLE
Procedure: Enable or disable alarming of a failed temperature sensor connected to the RTD1
input as required.
IMPORTANT:
• This failure alarm should be enabled if a temperature sensor is connected to the RTD1 input.
• This alarm is always latched and must be reset by the user.
3.5.5 HIGH TS 2 TEMPERATURE ALARM
Purpose: If enabled, the HIGH TS 2 TEMP ALARM allows for alarming of high temperature
conditions as sensed by the temperature sensor connected to the RTD2 input.
Alarm Mask: ENABLE or DISABLE
Range: –76 to 1058°F (–60 to 570°C)
Procedure: Adjust the HIGH TS 2 TEMP ALARM temperature setpoint to the desired value.
Note that the HIGH TS 2 TEMP ALARM must be enabled in order to adjust the HIGH TS 2 TEMP
ALARM temperature setpoint.
IMPORTANT: If no second sensor is installed this alarm should be disabled. This alarm may be
used for applications where a product that is sensitive to over temperature is involved. General
usage could result in nuisance alarms due to the flow of hot product or steam out. This may be
a case where the alarm could be enabled and non-latching temperature alarming used. A high
temperature condition resulting from a forced on failure of the heating circuit should first be
alarmed by the SWITCH FAILURE ALARM (see Section 3.5.16 for more information).
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