Operating Instructions – MOVIGEAR® SNI-B
69
5
Installation instructions
Electrical installation
5.2.3
Control terminal actuation
Adhere to the following sequence when actuating the control terminals:
5.2.4
Line protection and residual current device (RCD or RCM)
• Install the fuses at the beginning of the power supply cables behind the supply bus
junction.
• A conventional residual current device is not permitted. RCDs sensitive to universal
current are permitted. During normal operation of MOVIGEAR
®
, earth-leakage cur-
rents of > 3.5 mA can occur.
• SEW-EURODRIVE recommends to not use residual current devices. However, if a
residual current device is stipulated for direct or indirect protection against contact,
observe the above note.
5.2.5
Line contactor
• Use only a contactor of utilization category AC3 (EN 60947-4-1) as a line contactor.
Control terminals (the following figure shows a schematic illustration)
9007201633190411
2.
1.
3.
WARNING
Electric shock due to incorrect RCD type
Severe or fatal injuries.
• The connected MOVIGEAR
®
drive units can cause direct current in the protective
earth conductor. In cases where an earth-leakage circuit breaker is used for pro-
tection against direct or indirect contact, only a type B earth-leakage circuit breaker
is permitted on the power supply side of MOVIGEAR
®
drive units.
NOTICE
Damage to the MOVIGEAR
®
inverter due to jogging of the line contactor.
Damage to the MOVIGEAR
®
inverter.
• Do not use the line contactor (see wiring diagram) for jog mode but only for
switching the inverter on and off. For jog mode, use the control commands.
• Observe a minimum switch-off time of 2 s for the line contactor.
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