ABB ACQ550-x1-06A6-2 User Manual page 282

282
The most common temperature sensors are:
• motor sizes IEC180...225: thermal switch (e.g. Klixon)
• motor sizes IEC200...250 and larger: PTC or PT100.
Ground fault protection
ACQ550 internal fault logic detects ground faults in the drive, motor, or motor cable.
This fault logic:
• is NOT a personal safety or fire protection feature
• can be disabled using parameter 3017
Note: Disabling earth fault (ground fault) may void the warranty.
• could be tripped by leakage currents (input power to ground) associated with long
high capacitance motor cables.
Grounding and routing
Motor cable shielding
Motor cables require shielding using conduit, armored cable or shielded cable.
• Conduit – When using conduit:
– Bridge joints with a ground conductor bonded to the conduit on each side of
– Bond conduit run to the drive enclosure.
– Use a separate conduit run for motor cables (also separate input power and
– Use a separate conduit run for each drive.
• Armored cable – When using armored cable:
– Use six-conductor (3 phases and 3 grounds), type MC continuous corrugated
– Armored motor cable can share a cable tray with input power cables, but not
• Shielded cable – For shielded cable details, see section
requirements for CE & C-Tick compliance
Grounding
See section
For CE compliant installations and installations where EMC emissions must be
minimized, see section
Drive's motor connection terminals
The drive's motor and input power terminals have the same specifications. See
section
Technical data
the joint.
control cables).
aluminium armor cable with symmetrical grounds.
with control cables.
Ground connections
Effective motor cable shields
Drive's power connection terminals
EARTH FAULT
on page 283.
on page 275.
on page 284.
on page 276.
ACQ550-U1 User's Manual
Motor cable