english
Manual ATEX encoders
II 3G Ex nA IIC T4 Gc X
II 3D Ex tc IIIC T135°C Dc IP6X X
EN - Page 7 (R600908.0009)
General information for electrical installation of the encoder
1. Safety standards in force
• Before commissioning, all required cable wires are to be connected in compliance with the data sheet!
Insulate all unused ends properly in order to prevent any short-circuit.
• When confectioning the mating connector, observe the instructions possibly attached to this connector.
• Recommended cable lengths: For symmetric transmission (e. g. compliant with RS422), max. cable length 50 m
(Cable length with twisted pairs)
• Connect or disconnect the mating connector only when the encoder is switched off.
• Respect the proper operating voltage and the maximum allowable output current (see data sheet)!
• The operating voltage of the encoder and of the controller must be switched on and off simultaneously.
2. An EMC-compliant installation is the prerequisite for achieving CE conformity:
• Use totally shielded cables as control cables. In case of symmetric transmission (e. g. RS422), use a cable
with twisted wire pairs. The shield of the cable is ideally applied on the encoder and on the controller through
the complete periphery (360°) of shieldable connectors or cable feedthroughs.
• The protective earth (PE) is to be applied preferably on both sides, on the encoder and on the controller, with
low impedance.
• In case of problems due to ground loops, disconnect the protective earth (PE) from the encoder side. The
encoder should then be electrically insulated from the drive.
• The encoder lines must be routed separately from cables with high interference levels.
• No electrical devices with high interference levels such as e. g. frequency converters, solenoid valves, con-
tactors, etc., should be connected to the voltage supply of the encoder. Otherwise, a suitable voltage filtering
must be provided.
Operation:
The max. rotary speed is often stated for short-term and continuous operation.
In short-term operation, do not exceed an operating time of 10 minutes.
We cannot give any guarantee in case of non-compliance with the above instructions.
We ask for your understanding.
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EN 61000-6-
EN 61000-6-3
EN 61000-6-4
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