Commissioning (hardware)
4.4 Fan
SIMOTION D4x5-2
Commissioning and Hardware Installation Manual, 02/2012
111
4.4.4 Response to overtemperature
Operation at overtemperature reduces the module service life and can result in damage to
the module.
Causes
Cause of problems in the heat dissipation of the module can be, for example:
● Violation of the maximum permissible air intake temperature
● Free convection is not ensured (clearances are not maintained, pollution, convection is
prevented by cables)
● Impermissible mounting position of the module
Temperature thresholds
The internal module temperature is monitored via two module-specific temperature
thresholds:
● Overtemperature is signaled when the first (lower) temperature threshold is exceeded.
● When the temperature falls below the first temperature threshold again (minus a
hysteresis of approx. 5° C), "Normal temperature" is signaled.
● When the second (higher) temperature threshold is exceeded, the module shuts down in
order to protect itself.
Response to overtemperature
Table 4- 11 Response of the temperature monitoring
Temperature... Response
... exceeds the 1st temperature
threshold (overtemperature)
Call of the PeripheralFaultTask:
• TSI#InterruptI = _SC_PC_INTERNAL_FAILURE (= 205)
• TSI#details = 16#00000002
Diagnostics buffer entry:
"Temperature exceeded in the housing"
... falls below the 1st
temperature threshold minus a
hysteresis of approx. 5° C
Call of the PeripheralFaultTask:
• TSI#InterruptId = _SC_PC_INTERNAL_FAILURE (= 205)
• TSI#details = 16#00000004
Diagnostics buffer entry:
"Temperature in the housing has returned to normal"
... exceeds the 2nd temperature
threshold
Module goes into permanent RESET to protect itself (7-segment
display shows "8", RDY LED flashes red/yellow at 2 Hz).
Diagnostics buffer entry (as of V4.3): "Temperature in the housing
too high, self-protection function of the module activated"
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