Electrical Installation; Safety Instructions; It Mains - Danfoss VLT DriveMotor FCP 106 Operating Instructions Manual

Electrical Installation

4 Electrical Installation

4.1 Safety Instructions

See chapter 2 Safety for general safety instructions.
WARNING
4 4
INDUCED VOLTAGE
Induced voltage from output motor cables that run
together can charge equipment capacitors even with the
equipment turned off and locked out. Failure to run
output motor cables separately or use screened cables
could result in death or serious injury.
•
run output motor cables separately, or
•
use screened cables
CAUTION
SHOCK HAZARD
The frequency converter can cause a DC current in the
PE conductor. Failure to follow the recommendation
below means the RCD may not provide the intended
protection.
•
When a residual current-operated protective
device (RCD) is used for protection against
electrical shock, only an RCD of Type B is
permitted on the supply side.
Over-current Protection
•
Additional protective equipment such as short-
circuit protection or motor thermal protection
between frequency converter and motor is
required for applications with multiple motors.
•
Input fusing is required to provide short-circuit
and over-current protection. If not factory-
supplied, fuses must be provided by the installer.
See maximum fuse ratings in Table 7.15.
Wire Type and Ratings
•
All wiring must comply with local and national
regulations regarding cross-section and ambient
temperature requirements.
•
Power connection wire recommendation:
minimum 75 °C rated copper wire.
See chapter 7.10 Fuse and Circuit Breaker Specifications and
chapter 7.6 Cable Specifications for recommended wire sizes
and types.
14
Operating Instructions

4.2 IT Mains

IT MAINS
Installation on isolated mains source, that is, IT mains.
Max. supply voltage allowed when connected to mains:
440 V (3x380-480 V units).
For IT mains operation only,
In this mode, the internal RFI filter capacitors between
housing and the mains RFI filter circuit are disabled, to
reduce the ground capacity currents.
1
Illustration 4.1 Location of RFI Switch/Screw
To reinsert, use an M3x12 screw only.
Danfoss A/S © Rev. 06/2014 All rights reserved.
CAUTION
•
disconnect power and wait until discharged. See
discharge time in Table 2.1.
•
remove cover, see Illustration 4.6.
•
disable the RFI filter by removing the RFI switch/
screw. For location, see Illustration 4.1.
1
RFI switch/screw
CAUTION
MG03L202