CONNECTION PROCEDURE
PAGE
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4.2.
Start-up procedure
Before you start the system, make sure that the motor temperature is less than the monitored
temperature limit and that the FPTC-01/02 module does not activate the STO function (STO circuit is
closed). Otherwise, the FSPS-21 module does not start correctly and keeps the STO function active. If
this happens, examine the motor, PTC sensor and wiring of the STO circuit, and either start the system
again or boot the FSPS-21 module with parameter 51/54.27.
When the motor temperature increases above the PTC sensor temperature limit, the sensor resistance
increases sharply. This indicates overtemperature to the FPTC-01/02 module. The FPTC-01/02 module
then activates the SMT function by opening the drive Safe torque off (STO) circuit. This activates the
drive STO function.
NOTICE
For the system to start, make sure that the FPTC module does not activate STO.
If the FPTC module has activated STO, the safety PLC does not know of it (sPLC does not
communicate with FPTC). The Information is available through a normal PLC and drive
connection.
If the FPTC module activates STO in the middle of SS1-t, the FSPS informs the safety PLC
that SS1-t finished successfully.
4.3.
Validation
To validate the system:
1.
Validate the FSPS-21 module.
2.
Validate the FPTC-01 or FPTC-02 module.
Strictly obey the validation instructions in the applicable documentation. Refer to [1], [2], [3].
