Essential Requirements For Conforming Installation; General Wiring Instruction; Motor Cable; Analog Or Digital Signals ( - Reliance electric GV3000/SE Instruction Manual

Essential Requirements for Conforming Installation

The following items are required for CE conformance:
1. Depending on inverter size and requested emission limit, use of GV3000 version with built-in HF
or RFI filter or connection of an external RFI-Filter as specified in Chapter 5, Accessories.
2. If inverter and filter are separately built in a cabinet, they must be mounted on a blank
(not painted) galvanized panel with good conductivity.
3. Correct earthing of equipment and cable screens.
4. Output power wiring (drive to motor) must be screened 4-wire cable or run in a separate steel
conduit.
5. All control (I/O) and signal wiring must be screened cable or run in a separate steel conduit.
6. On stand-alone inverters in protection class IP20 enclosures the screen of the output power wiring
must be connected to the inverter chassis by the use of suitable, EMC-tested cable entry glands.

General Wiring Instruction

Motor Cable

• The cable between inverter/cabinet output and motor shall be 4-wire screened cable as specified
in Figure A-1 (three phases and earth conductor green/yellow).
• The screen must be solidly connected to the control cabinets earth busbar or to the earthing stud
of the inverter with a large connection area and good conductivity to ensure that the grounding
represents a low impedance for HF-signals.
• The screen on the motor side must be solidly connected to the motor housing providing a large
connection area with good conductivity.
• If screened cables are not available (limited by the obtainable cross sections) the individual
conductors and protective conductors must be run in steel conduits or enclosed metal cable ducts
also connected to earth at both ends.
• All the leads shall have the same cross section.
(earth conductors with cross section. >16
Analog or Digital Signals (e.g. Incremental Encoder, Reference) and Control Signals (Relays)
These signal leads must be screened cable as specified in Figure A-1.
For the individual conductors twisted pairs are not required.
The screen must be earthed at both ends.
Stranded copper wire
Plastic insulation
Inner plastic sheath
Compact screen of galvanized (tinned) copper or steel braid
Outer plastic jacket
Figure A-1: Specification for screened cable
A-2
A - CE-CONFORMITY
2 2
: min. 16 or 50% of phase lead)
GV3000/SE 49'1327 e