Installation manual

Chapter 3
Control Wiring for PowerFlex 700S Drives with
Phase I Control
I/O Wiring
Important points to remember about I/O wiring:
• Always use tinned copper wire.
• Wire with an insulation rating of 600V or greater is recommended.
• Control and signal wires should be separated from power wires by at
least 0.3 meters (1 foot).
• 4100CCF3 Flex I/O cable for use with DriveLogix is limited to a 3 ft.
maximum length.
Important:I/O terminals labeled “(–)” or “Common” are
not referenced to
earth ground and are designed to greatly reduce common mode
interference. Grounding these terminals can cause signal noise.
Table 3.A Recommended Control Wire
!
ATTENTION: Hazard of personal injury or equipment damage
exists when using bipolar input sources. Noise and drift in sensitive
input circuits can cause unpredictable changes in motor speed and
direction. Use speed command parameters to help reduce input
source sensitivity.
Type Wire Type(s) Description
Insulation
Rating
Digital I/O Un-shielded Per US NEC or applicable
national or local code
–
300V, 60
o
C
(140
o
F),
Minimum
Shielded Multi-conductor shielded cable
such as Belden 8770(or equiv.)
0.750 mm
2
(18AWG), 3
conductor, shielded.