A35412 — TM: Temperature alarm threshold channel 6 exceeded

A35412 indicates that the temperature measured through the temperature sensing of the Terminal Module 150 (TM150) on channel 6 — the actual value r4105[6] — has exceeded the alarm threshold stored in p4102[12]. Depending on how the drive is configured, the same condition can also be issued as a fault (F) or without any reaction (N). As an alarm, the drive takes no automatic action; the message only reports the temperature condition.

• The temperature r4105[6] measured using the temperature sensing of the Terminal Module 150 (TM150) has exceeded the threshold value p4102[12] that initiates this alarm.
• With sensor type "PTC thermistor" or "Bimetallic NC contact" (p4100[6] = 1, 4), the drive derives the temperature in r4105[6] directly from the measured resistance r4101[6]: above 1650 ohms it reports 250 °C, at 1650 ohms or below it reports -50 °C, so the alarm follows this fixed two-step conversion.

1. Read the temperature actual value r4105[6] of channel 6 and compare it with the alarm threshold p4102[12].
2. Read the alarm value r2124 as a decimal number: it holds the temperature actual value at the time the alarm was initiated, in 0.1 °C.
3. If the sensor type is "PTC thermistor" or "Bimetallic NC contact" (p4100[6] = 1, 4), read the resistance r4101[6]: above 1650 ohms the drive reports 250 °C, at 1650 ohms or below it reports -50 °C.
4. Allow the temperature sensor to cool down until the measured temperature lies below p4102[12] minus the hysteresis p4118[6].

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

• r4105[6] — the temperature actual value of channel 6; read it to see the current temperature the TM150 is reporting for this alarm.
• p4102[12] — the alarm threshold for channel 6; the alarm is initiated as soon as r4105[6] rises above this value.
• p4118[6] — the hysteresis of the TM150 alarm threshold; the alarm only clears once the temperature is below p4102[12] − p4118[6].
• p4100[6] — the sensor type of channel 6; value 1 means "PTC thermistor", value 4 "Bimetallic NC contact", and for these types the temperature is derived from the resistance in two fixed steps.
• r4101[6] — the sensor resistance; for the sensor types above, more than 1650 ohms yields 250 °C, 1650 ohms or less yields -50 °C.
• r2124 — the alarm value; read it as a decimal to obtain the temperature actual value at the moment of initiation in 0.1 °C.

As an alarm, A35412 requires no acknowledgement: once the temperature sensor has cooled down so that the measured temperature is below p4102[12] minus the hysteresis p4118[6], the alarm clears itself. If the drive's configuration raises the same condition as a fault, it is acknowledged immediately by a POWER ON.