15 WAS.handling Electro Documentation
3.2 Electrical installation ACOPOS drive
The ACOPOS drive may only be operated on earthed, three-phase industrial networks (TN, TT network).
The mains is connected via the terminals X3
- For single phase connection use clamps: L1, N, PE.
- For three phase connection use clamps: L1, L2, L3, PE
Use lines of at least 1.5 mm² (or AWG 16). The protective conductor must also correspond to this cross
section.
Servo drives are systems with increased leakage current (greater than 3.5 mA AC or 10 mA DC). For this
reason a fixed (non-removable) protective conductor connection must be provided
Mains fuse:
The mains line must be protected by a circuit breaker or fuses. Time delay circuit breakers with trip
characteristics C (in accordance with IEC 60898) or time delay fuses with trip characteristics M (in accordance
with IEC 60269-1) should be used.
Fault Current:
Servo drives have an internal power rectifier. In the event of an earth contact, a flat DC fault direct current can
block the triggering of an AC current or pulse current-sensitive residual-current-operated circuit breaker (RCD)
and thus suspend the protective function for all of the devices operated on this residual-current-operated circuit
breaker (RCD). The RCD must have a rated fault current ≥100 mA. If a RCD is used it must be an AC/DC-
sensitive 4-pol type.
A generic RCD (0.03A, 50 Hz) will cause spurious tripping, because the built-in interference capacitors (Y-
capacitors between L1, L2, L3 and PE, also at the motor output) and the current through the motor lines shield
will also cause a fault current >0.03A.
Fixed protective conductor
Mains connection (terminal X3)
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