F35400 — TM: Temperature fault/alarm threshold channel 4 exceeded

F35400 comes from the temperature evaluation of the Terminal Module 150 (TM150), channel 4. The drive raises it when either the channel's alarm threshold has been exceeded for longer than the set timer allows, or the fault threshold itself has been passed. Depending on the drive's configuration, the same condition can also be delivered as an alarm or with no reaction at all. The manual points out that the message only shuts the drive down when at least one BICO interconnection exists between the drive and the Terminal Module. The remaining temperature channels of the Terminal Module carry their own codes.

• The alarm threshold of channel 4 has been exceeded for longer than the time set in the timer (p4102[8], p4103[4]).
• The fault threshold of channel 4 has been exceeded (p4102[9]).

1. Allow the temperature sensor to cool down to below p4102[9] minus the hysteresis set in p4118[4].
2. Follow the channel 4 temperature actual value at connector output r4105[4]; the value can be interconnected and so watched while cooling.
3. If the sensor type is "PTC thermistor" or "Bimetallic NC contact" (p4100[4] = 1, 4), read the resistance in r4101[4]: above 1650 ohms the drive shows r4105[4] = 250 °C, at 1650 ohms or below it shows r4105[4] = -50 °C.
4. If required, set the fault response to NONE (p2100, p2101).

• r0949, interpreted decimal, holds the temperature actual value of channel 4 at the moment the fault was initiated, in 0.1 °C.

• p4102 — index [8] holds the alarm threshold and index [9] the fault threshold of channel 4; these are the comparison values behind this message.
• p4103 — index [4] sets the timer: how long the alarm threshold may be exceeded before the fault is initiated.
• p4100 — index [4] selects the sensor type of channel 4; the fixed display values of the note apply for the settings 1 (PTC thermistor) and 4 (bimetallic NC contact).
• r4101 — reports the resistance of the channel 4 sensor; the 1650 ohms limit from the note refers to this value.
• r4105 — connector output (CO) with the channel 4 temperature actual value; the drive writes 250 °C or -50 °C here depending on the sensor state, and the value can be interconnected.
• p4118 — hysteresis of the fault/alarm threshold for channel 4; the sensor must cool below the fault threshold minus this hysteresis.
• p2100 / p2101 — together they re-map the response of this fault number; the remedy names the setting NONE.

As a fault, the message is acknowledged immediately; switching the power supply off and on (POWER ON) also removes it. Where the drive delivers the same condition as an alarm or with no reaction, no acknowledgement is required. Before restarting, make sure the sensor has cooled below p4102[9] minus the hysteresis (p4118[4]) so the condition is really gone.