Practices
4-9
Wire Routing
General
When routing wiring to a drive, separate high voltage power and motor
leads from I/O and signal leads. To maintain separate routes, route these in
separate conduit or use tray dividers.
Table 4.A Cable and Wiring Recommendations
Category
Wiring
Level
Signal Definition
Signal Examples
Minimum Spacing (in inches) between Levels in
Steel Conduits (Cable Trays)
Spacing
Notes
1
2/3/4
5/6
7/8
9/10/11
Power
1
AC Power (600V or greater)
2.3kV 3-Ph AC Lines 0
3 (9)
3 (9)
3 (18)
Refer to
Spacing
Note 6
Refer to
Spacing
Notes 1, 2
and 5
2
AC Power (less than 600V)
460V 3-Ph AC Lines
3 (9)
0
3 (6)
3 (12)
Refer to
Spacing
Note 6
Refer to
Spacing
Notes 1, 2
and 5
3
AC Power
AC Motor
4
Dynamic Brake Cables
Refer to Spacing Note
7
Control
5
115V ac/dc Logic
Relay Logic/PLC I/O
Motor Thermostat
3 (9)
3 (6)
0
3 (9)
Refer to
Spacing
Note 6
Refer to
Spacing
Notes 1, 2
and 5
115V ac Power
Power Supplies,
Instruments
6
24V ac/dc Logic
PLC I/O
Signal
(Process)
7
Analog Signals, DC Supplies Reference/Feedback
Signal, 5 to 24V DC
3 (18)
3 (12)
3 (9)
0
1 (3)
Refer to
Spacing
Notes 2, 3,
4 and 5
Digital (Low Speed)
TTK
8
Digital (High Speed)
I/O, Encoder, Counter
Pulse Tach
Signal
(Comm)
9
Serial Communication
RS-232, 422 to
Terminals/Printers
Refer to Spacing Note 6
1 (3)
0
11
Serial Communication
(greater than 20k total)
ControlNet,
DeviceNet, Remote
I/O, Data Highway
Example
: Spacing relationship between 480V ac incoming power leads and 24V dc
logic leads.
•
480V ac leads are Level 2; 24V dc leads are Level 6.
•
For separate steel conduits, the conduits must be 3 inches (76
mm apart).
•
In a cable tray, the two groups of leads must be 6 inches (152 mm) apart.
Summary of Contents for Allen-Bradley 1305-AA02A
Page 4: ...ii Summary of Changes Notes ...
Page 40: ...2 18 Power Distribution Notes ...
Page 48: ...3 8 Grounding Notes ...
Page 68: ...4 20 Practices Notes ...
Page 78: ...6 8 Electromagnetic Interference Notes ...
Page 94: ...Glossary 4 UL Underwriters Laboratories ...
Page 100: ...Index 6 ...
Page 101: ......