RST FRC-F Series, Руководство пользователя

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2.9 Shielding
•
On principle, use screened cables and lines only, for every connection to outside of the cabinet,
i.e.:
- Motor cable
- Encoder cable
- Brake resistor cable
- Motor PTC resistor cable (if wired on VVVF controller)
- DCP cable
- Cable for shaft copying of control
•
The cable from the encoder is to be screened up to the plug in the VVVF controller.
•
The motor cable should be installed separately from the other cables, if possible.
•
To obtain a proper earth connection, the harness shields of the cables must be connected to the
PE base plate by means of metal clamps. The shields of the cables must be in firm contact with
the clamp
2.10 Earth-leakage circuit-breaker
•
The elevator should not be operated via an earth-leakage circuit-breaker, as the leakage current
of the interference suppression capacitors contained in the VVVF controller and the interference
suppression filter could operate this circuit-breaker. Should it nevertheless be inevitable to install
an earth-leakage circuit breaker due to a special situation concerning the elevator, only use circuit-
breakers admitted to VVVF controller-operation (type B, DIN-VDE 0644-100).
2.11 Motor protection by ptc-thermistor
The evaluation of the motors ptc-thermistor is integrated in the software. It must be activated in the
menu. As a standard, the evaluation is deactivated.
2.12 Motor protection switch
Motor protection switches on principle do not suit a VVVF-controlled elevator drive and should
therefore not be applied