Rockwell Automation 7000 PowerFlex Medium Voltage Air-Cooled (B Frame) Installation - ForGe Control - Manual (Page 38)

38 Rockwell Automation Publication 7000-IN007E-EN-P - June 2014
Chapter 3 Drive Installation
Table 3 - Wire group numbers
1. Belden 8760 - 18 AWG, twisted pair, shielded;
Belden 8770 - 18 AWG, 3 conductor, shielded
Belden 9460 - 18 AWG, twisted pair, shielded
Belden 9463 - 24 AWG, twisted pair, shielded
2. You may use steel conduit or cable tray for all PowerFlex 7000 Drive power or control wiring, and steel conduit is
mandatory for all PowerFlex 7000 Drive signal wiring. Bring all input and output power wiring, control wiring or conduit
through the drive conduit entry holes of the enclosure. Use appropriate connectors to maintain the environmental rating
of the enclosure. The steel conduit is MANDATORY for all control and signal circuits, when installing the drive in European
Union countries. The connection of the conduit to the enclosure shall be on full 360° and the ground bond at the junction
shall be less than 0.1
Ω. In EU countries, this is a usual practice to install the control and signal wiring.
3. Spacing between wire groups is the recommended minimum for parallel runs of 61 m (200 ft) or less.
4. The customer is responsible for the grounding of shields. On drives shipped after November 28/02, the shields are
removed from the drive boards. On drives shipped prior to November 28/02, all shields are connected at the drive end and
you must remove these connections before grounding the shield at the customer end of the cable. You must ground
shields for cables from one enclosure to another only at the source end cabinet. If you must splice shielded cables, the
shield must remain continuous and insulated from ground.
5. AC and DC circuits must run through separate conduits or trays.
6. Voltage drop in motor leads may adversely affect motor starting and running performance. Installation and application
requirements may dictate that larger wire sizes than indicated in IEC / NEC guidelines are used.
Select the wire sizes individually, observing all applicable safety and CEC or
IEC/NEC regulations. The minimum permissible wire size does not necessarily
result in the best operating economy. The minimum recommended size for the
wires between the drive and the motor is the same as if using a main voltage
source connection to the motor. The distance between the drive and motor may
affect the size of the conductors used.
For tray: Recommended spacing between different wire groups in the same tray
For conduit: Recommended spacing for wire groups in separate conduit — mm (in.)
Wire
Category Wire
Group Application Signal Example Recommended
Cable Wire Group Power 1 Power 2 Control 3 Control 4 Signal 5 Signal 6
Power
1 AC Power
(>600V AC) 2.3 kV, 3 Ø
AC lines
Per IEC / NEC
Local Codes and
Application
Requirements In tray 228.6
(9.00) 228.6
(9.00) 228.6
(9.00) 228.6
(9.00)
Between
conduit 76.2 (3.00)
Between conduit
2 AC Power (to
600V AC) 480V, 3 Ø Per IEC / NEC
Local Codes and
Application
Requirements In tray 228.6
(9.00) 228.6
(9.00) 152.4
(6.00) 152.4
(6.00)
Between
conduit 76.2 (3.00)
Between conduit
Control
3 115V AC
or 115V DC
Logic Relay logic
PLC I/O Per IEC / NEC
Local Codes and
Application
Requirements In tray 228.6
(9.00) 152.4
(6.00) 228.6
(9.00) 152.4
(6.00)
115V AC Power Power supplies,
instruments Between
conduit 76.2 (3.00)
Between conduit
4 24V AC
or 24V DC Logic PLC I/O Per IEC / NEC
Local Codes and
Application
Requirements In tray 228.6
(9.00) 152.4
(6.00) 152.4
(6.00) 228.6
(9.00)
Between
conduit 76.2 (3.00)
Between Conduit
Signal
5 Analog Signals
DC Supplies 5...24V DC supplies Belden 8760
Belden 8770
Belden 9460
Digital
(low speed) Power supplies,
TTL Logic Level
6 Digital
(high speed) Pulse Train,
Input Encoder,
PLC
Communications Belden 8760
Belden 9460
Belden 9463 All signal wiring must be run in separate steel conduit.
A wire tray is not suitable.
The minimum spacing between conduits containing different wire groups
is 76.2 mm (3 in.).