Cable Installation; Frames Mr4 To Mr7 - Honeywell SmartVFD HVAC MR4 User Manual

P
OWER CABLING
4.4

Cable installation

• Before starting, check that none of the components of the drive is live. Read carefully
the warnings in chapter 1.
• Place the motor cables sufficiently far from other cables
• Avoid placing the motor cables in long parallel lines with other cables.
• If the motor cables run in parallel with other cables note the minimum distances
between the motor cables and other cables given in table below.
• The given distances also apply between the motor cables and signal cables of other
systems.
• The maximum lengths of motor cables are 328 ft. (MR4), 492 ft. (MR5 and MR6) and
656 ft. (MR7 to MR9).
• The motor cables should cross other cables at an angle of 90 degrees.
• If cable insulation checks are needed, see chapter Cable and motor insulation checks.
Start the cable installation according to the instructions below:
4.4.1

Frames MR4 to MR7

1
Strip the motor and mains cables as advised below.
Earth conductor
A1
B1
Distance between
cables, [in]
11.8
39.4
C1
D1
MAINS
Figure 17. Stripping of cables
Shielded
cable, [ft]
≤ 164
≤ 656
Earth conductor
E
MOTOR
Honeywell
• 24
C2
D2
4