A35411 — TM: Temperature alarm threshold channel 5 exceeded

A35411 comes from the temperature sensing of the Terminal Module 150 (TM150): the temperature acquired on channel 5, held in r4105[5], has exceeded the alarm threshold stored in p4102[10]. Depending on how the drive is configured, the same condition can also be issued as a fault (F) or with no reaction (N). The remaining temperature channels of the Terminal Module are each monitored through their own message.

With the sensor types "PTC thermistor" and "Bimetallic NC contact" (p4100[5] = 1 or 4), the drive derives the displayed temperature directly from the sensor resistance r4101[5]: above 1650 ohms it reports 250 °C, at 1650 ohms or below it reports -50 °C.

• The temperature measured using the temperature sensing of the Terminal Module 150 (TM150) — the value in r4105[5] — has exceeded the threshold set in p4102[10] that initiates this message.

1. Compare the measured temperature r4105[5] with the alarm threshold p4102[10] to confirm the exceedance.
2. If the sensor type is "PTC thermistor" or "Bimetallic NC contact" (p4100[5] = 1 or 4), read the sensor resistance r4101[5]: above 1650 ohms the drive reports 250 °C, at 1650 ohms or below it reports -50 °C.
3. Read the alarm value r2124 as a decimal number; it shows the temperature actual value at the time the message was initiated, in 0.1 °C.
4. Allow the temperature sensor to cool down to below p4102[10] minus the hysteresis in p4118[5]; this is the condition the manual gives for the message to clear.

• The alarm value in r2124 holds the temperature actual value at the time the message was initiated; interpret it as a decimal number, in 0.1 °C.

• r4105 — supplementary temperature actual value; index [5] contains the channel-5 temperature whose threshold crossing initiates this message, so read it to follow the current measured value.
• p4102 — supplementary temperature fault threshold/alarm threshold; index [10] holds the channel-5 alarm threshold that was exceeded.
• p4100 — supplementary temperature sensor type; p4100[5] = 1 selects a PTC thermistor, p4100[5] = 4 a bimetallic NC contact.
• r4101 — sensor resistance; for those sensor types, index [5] shows whether the resistance is above 1650 ohms (reported as 250 °C) or at 1650 ohms or below (reported as -50 °C).
• p4118 — TM150 alarm threshold hysteresis; index [5] is subtracted from p4102[10] to give the temperature below which the sensor must cool down.
• r2124 — alarm value; contains the temperature at the time of initiation as a decimal number in 0.1 °C.

The message needs no acknowledgement and the drive takes no automatic action in response to it. Once the temperature sensor has cooled down to below p4102[10] minus the hysteresis p4118[5], the message goes away by itself. If the drive is configured to output the condition as a fault instead, the fault can be acknowledged immediately; a POWER ON is not required.