A35214 — TM: Temperature alarm threshold channel 3 exceeded

A35214 is an alarm from a Terminal Module (TM): the temperature measured through the TM temperature sensing on channel 3 (r4105[3]) has exceeded the alarm threshold set in p4102[6]. As an alarm it signals the condition without tripping the drive. The drive stores the temperature actual value at the moment of initiation in the alarm value r2124 (interpret decimal, in 0.1 °C). Depending on the drive configuration, the same condition can also be output as a fault (F) or with no reaction (N).

• The temperature measured using the temperature sensing of the Terminal Module (TM) on channel 3 (r4105[3]) has exceeded the threshold value set to initiate this alarm (p4102[6]).

1. Read the temperature actually measured on channel 3 in r4105[3] and compare it with the alarm threshold in p4102[6]; the alarm value r2124 holds the temperature actual value at the time of initiation (interpret decimal, in 0.1 °C).
2. Check the sensor type set in p4100[3]: when a PTC thermistor or a bimetallic NC contact (p4100[3] = 1, 4) is connected, the drive derives the temperature value from the sensor resistance in r4101[3], so read r4101[3] to interpret what is reported.
3. Allow the temperature sensor to cool down to below p4102[6] - hysteresis (5 K, for TM150, can be set using p4118[3]). The alarm then clears by itself.

• Alarm value (r2124, interpret decimal): temperature actual value at the time of initiation, scaled in 0.1 °C.
• For sensor type PTC thermistor and bimetallic NC contact (p4100[3] = 1, 4): if r4101[3] > 1650 ohms, r4105[3] = 250 °C; if r4101[3] <= 1650 ohms, r4105[3] = -50 °C.

• r4105[3] — temperature actual value of the Terminal Module temperature sensing on channel 3; shows the temperature that exceeded the threshold.
• p4102[6] — alarm threshold of channel 3; the alarm is initiated when r4105[3] rises above this value and clears when the temperature falls below it minus the hysteresis.
• p4100[3] — sensor type of channel 3; the resistance-based evaluation with the fixed values 250 °C and -50 °C applies for PTC thermistor and bimetallic NC contact (p4100[3] = 1, 4).
• r4101[3] — TM120 sensor resistance; read it when a PTC thermistor or bimetallic NC contact is connected, because the drive derives the reported temperature from it.
• r2124 — alarm value; contains the temperature actual value at the time of initiation, to be interpreted decimal in 0.1 °C.
• p4118[3] — TM150 threshold hysteresis; on a TM150 the 5 K hysteresis below p4102[6] can be set here.

The alarm needs no acknowledgement. It goes by itself once the temperature sensor has cooled down to below p4102[6] minus the hysteresis (5 K; on a TM150 settable in p4118[3]). If the drive is configured to issue the same condition as a fault (F), the fault is acknowledged immediately via POWER ON; as the no-reaction variant (N) no acknowledgement is required either.