Danfoss iC7 Guide D'installation page 4

iC7-Automation Frequency Converters
Installation Guide
1.4 EMC-compliant Installation
For EMC-compliant installation, refer to the operating or design guide and follow the electrical installation instructions.
Use shielded cables for motor (unshielded cables in metal conduit are acceptable) and control wiring.
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Connect the shield to the enclosures at both ends. If the shield connection points have a voltage potential difference, connect a
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low impedance equalizing wire parallel to the shielded cable. Otherwise, break the shield connection on 1 end to prevent ground
current loops.
Ensure that motor cables are as short as possible to reduce the interference level from the entire system.
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Provide a minimum 200 mm (7.9 in) separation between mains input, motor cables, and control cables.
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Convey the currents back to the unit using a metal mounting plate. Ensure good electrical contact from the mounting plate through
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the mounting screws to the drive chassis.
1.5 Installing the Drive
SHOCK HAZARD
Touching an uncovered motor, mains, or DC connection plug or terminal can result in death or serious injury.
All plugs and terminal protection covers for the motor, mains, and DC connections must be installed
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within the IP20 enclosure to provide an IP20 protection rating. If plug and terminal covers are not
installed, the protection rating is considered IP00.
Installation location is important. Full output current is available when the following installation conditions are met. For temperatures
and altitudes outside this range, consult the Derating section in the design guide.
Maximum ambient air temperature for high overload operation: 45 ºC (113 ºF) average over 24 hrs and 50 ºC (122 ºF) for 1 hr. For low
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overload, maximum ambient air temperature: 40 ºC (104 ºF) average over 24 hrs and 45 ºC (113 ºF) for 1 hr.
Minimum ambient air temperature: -30 ºC (-22 ºF).
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Altitude < 1000 m (3280 ft) above sea level.
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1.
Identify the frame designation. See
2.
Ensure that the operating environment and electrical installation meet the following standards.
a.
Indoor unconditioned/pollution degree 2.
b.
Overvoltage category 3.
3.
Review the wiring diagram. See illustration step 1.
All wiring must comply with local and national regulations regarding cross-section and ambient temperature requirements.
Loose connections can cause equipment faults or reduced performance. Tighten the terminals according to the proper
torque value in illustration step 8.
4.
Review the fuse specifications. See illustration step 2.
The drive can be suitable for use on a circuit capable of delivering up to 100 kA short-circuit current rating (SCCR) at the
respective drive voltage rating. For mains disconnect switch SCCR ratings, see the design guide.
5.
Review the power cable specifications. See illustration step 3.
Use copper wire with a minimum 70 ºC (158 ºF) rating. For aluminum wire, see the design guide.
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WARNING
Figure 1.
Installation
AN45873927295002-000302 / 136R0272