ABB FPTC-01, User Manual

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34 Option description and instructions
Fault reaction function

FPTC-01 module
The FPTC-01 module has a fault reaction function. When the
module detects an internal fault or fault in the temperature sensor
circuit, it gives a request to the drive control unit to stop modulation
and activates the drive STO function.

STO function in the drive/inverter modules
The STO function in the drive/inverter module has internal fault
diagnostics and a fault reaction function which causes a fault trip in
case it detects a redundancy fault of STO control signals or any
internal failure. See the hardware and firmware manuals of the
drive/inverter module.

FSO module
The fault reaction function of the FSO module trips the drive if it
detects a failure. The FSO module activates the STO or Safe stop
emergency (SSE) function. This activates the drive STO function.
The drive STO function is active until the fault has been repaired.
Note : With the FPTC module, the recommended type of the SSE
function is Immediate STO , but other safety functions in the FSO
module can require that the type is Emergency ramp . With both
settings, the FSO module always activates the drive STO function
immediately in motor overtemperature situations (SMT function
activated).
The FSO module goes into the Fail-safe mode. The FSO module
LED STATUS/FAULT is red until the fault has been repaired.
To exit the Fail-safe mode, remove the cause of the fault and reset
the FSO module by switching the power off and on, by pressing the
Boot FSO button on the Safety view of Drive composer pro or with
drive parameter 96.09 FSO reboot . For more information, see the
drive firmware manual and the FSO module user’s manual.