ABB FPTC-02 Podręcznik aplikacji - Strona 6

Przeglądaj online lub pobierz pdf Podręcznik aplikacji dla Urządzenia przemysłowe ABB FPTC-02. ABB FPTC-02 10 stron. Thermistor protection with the profisafe safety functions module fsps-21 for acs880 drives

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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.

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:

Validate the FSPS-21 module.

Validate the FPTC-01 or FPTC-02 module.

Strictly obey the validation instructions in the applicable documentation. Refer to [1], [2], [3].

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