B&R ACOPOSinverter P84, User Manual

Page: 75 / 405

Installation guide
ACOPOSinverter P84 User's Manual 2.10 75
Warning!
INSUFFICIENT PROTECTION AGAINST OVERCURRENTS
•
Overcurrent protective devices must be properly coordinated.
•
The Canadian Electrical Code and the National Electrical Code (USA) require branch circuit
protection. Use the fuses recommended on the inverter nameplate to obtain the specified short-
circuit current rating.
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Do not connect the inverter to a supply mains whose short-circuit capacity exceeds the as-
sumed maximum short-circuit current specified on the nameplate of the inverter or in the tables
see "Technical data" on page 29 .
Failure to follow these instructions can result in death, serious injury or material damages.
Keep the power cables separate from low-voltage signal circuits in the installation (sensors, PLCs, measuring
apparatus, video, telephone, etc.).
The motor cables must have a minimum length of 0.5 m.
In certain situations where the motor cables have to pass under water, grounding currents could cause a tripping.
Additional output filters must therefore be used.
Do not use a surge protector or capacitors with correction factor at the inverter output.
Caution!
IMPROPER USE OF A BRAKING RESISTOR
•
Only use the recommended braking resistors in our catalogs.
•
Wire the thermal protection contact resistance so that the voltage supply of the inverter is im-
mediately disconnected in the event of a fault (see instructions supplied with the resistor).
Failure to follow these instructions can result in injury and/or equipment damage.
1.3.12.2 Control element
Route the control circuits and power circuits separately. For control and reference conductors, we recommend
using shielded twisted cables with a pitch of between 25 mm and 50 mm. The shielding is grounded at each end.
If you use cable ducts, do not run motor, power and control cables in the same cable duct. Maintain at least 8 cm
distance between the metal duct that contains the power supply cable and the metal duct with the control cables.
Maintain at least 31 cm distance between the non-metallic pipes or cable ducts that contain the power cable and
the metal ducts that contain the control cable. If it is necessary for control cables and power cables to cross, this
must always be done at right angles.