A35212 — TM: Temperature alarm threshold channel 1 exceeded

A35212 is an alarm from a Terminal Module (TM): the temperature measured using the TM's temperature sensing — the actual value in r4105[1] — has exceeded the alarm threshold set in p4102[2]. The message refers to channel 1 of the Terminal Module. Depending on the drive's configuration, the same condition can also be issued as a fault (F) or without any reaction (N).

• The temperature measured using the temperature sensing of the Terminal Module (TM) — the actual value in r4105[1] — has exceeded the threshold value in p4102[2] that initiates this alarm.
• For sensor type "PTC thermistor" or "Bimetallic NC contact" (p4100[1] = 1, 4), the reported temperature is derived from the sensor resistance r4101[1]: if r4101[1] is greater than 1650 ohms, the drive reports r4105[1] = 250 °C; if r4101[1] is less than or equal to 1650 ohms, it reports r4105[1] = -50 °C.

1. Let the sensor cool down. The manual's remedy is to Allow the temperature sensor to cool down to below p4102[4] - hysteresis; the hysteresis is 5 K, and on a TM150 it can be set using p4118[1].
2. While it cools, you can follow the measured temperature in r4105[1]; the temperature that applied when the alarm was initiated is stored in the alarm value r2124 (interpret decimal).

• Alarm value r2124, interpret decimal: the temperature actual value at the time the alarm was initiated, scaled in 0.1 °C.

• r4105 — the supplementary temperature actual value measured using the TM's temperature sensing; this is the value compared against the threshold for this message, so read it to follow the cool-down.
• p4102 — alarm/fault threshold of the supplementary temperature: the alarm initiates when r4105[1] exceeds p4102[2], and the sensor must cool below p4102[4] minus the hysteresis before the message clears.
• p4100 — sets the sensor type; "PTC thermistor" = 1 and "Bimetallic NC contact" = 4 are the types for which the resistance-derived values of 250 °C and -50 °C apply.
• r4101 — the TM120 sensor resistance; read it to see the raw resistance from which the drive derives 250 °C (above 1650 ohms) or -50 °C (at or below 1650 ohms) for these sensor types.
• r2124 — alarm value; holds the temperature actual value at the time of initiation, interpret decimal, in 0.1 °C.
• p4118 — TM150 alarm-threshold hysteresis; use it to set the hysteresis (5 K) that the sensor must cool below.

The alarm requires no acknowledgement and clears by itself: the drive takes no automatic action, and once the measured temperature has fallen below p4102[4] minus the hysteresis (5 K; on a TM150 settable via p4118[1]) the message goes away without any action at the operator panel. If the drive is configured to raise the same condition as a fault (F), that fault must be acknowledged IMMEDIATELY (POWER ON) before the drive restarts.