Direction Of Motor Rotation - Danfoss VLT FC 102 Series Design Manual

Electrical Installation
Enclosure Type
A5
A2, A5
A2, A5
6 6
A3, A5
B1, B2, B3, B4,
C1, C2, C3, C4
Table 6.35 Max. Cable Length for Each Parallel Cable, Depending on Quantity of Parallel Cables.
Problems may arise at start and at low RPM values if motor sizes are widely different because small motors' relatively high
ohmic resistance in the stator calls for a higher voltage at start and at low RPM values.
The electronic thermal relay (ETR) of the adjustable frequency drive cannot be used as motor protection for the individual
motor of systems with parallel-connected motors. Provide further motor protection with, for example, thermistors in each
motor or individual thermal relays (Circuit breakers are not suitable as protection).

6.4.4 Direction of Motor Rotation

The default setting is clockwise rotation with the adjustable frequency drive output connected as follows.
Terminal 96 connected to U-phase
Terminal 97 connected to V-phase
Terminal 98 connected to W-phase
The direction of motor rotation is changed by switching two motor phases.
Motor rotation check can be performed using 1-28 Motor Rotation Check and following the steps shown in the display.
118
Design Guide
Power Size Voltage [V]
(hp [kW])
7.5 400
[5]
500
1.5–2 400
[1.1–1.5]
500
3–5 400
[2.2–4]
500
7.5–10 400
[5.5–7.5]
500
15–125 400
[11–90]
500
Danfoss A/S © Rev. 06/2014 All rights reserved.
1 cable (ft [m]) 2 cables (ft [m])
492.13 147.64
[150] [45]
492.13 22.97
[150] [7]
492.13 147.64
[150] [45]
492.13 147.64
[150] [45]
492.13 147.64
[150] [45]
492.13 147.64
[150] [45]
492.13 147.64
[150] [45]
492.13 147.64
[150] [45]
492.13 246.06
[150] [75]
492.13 246.06
[150] [75]
3 cables (ft [m]) 4 cables (ft [m])
26.25 19.69
[8] [6]
13.12 9.84
[4] [3]
65.62 26.25
[20] [8]
16.4 13.12
[5] [4]
65.62 36.09
[20] [11]
65.62 19.69
[20] [6]
65.62 36.09
[20] [11]
65.62 36.09
[20] [11]
164.04 121.39
[50] [37]
164.04 121.39
[50] [37]
MG11BC22