3.3.6 Torque
Correct torque is imperative for all electrical connections.
Incorrect torque results in a bad electrical connection. Use
a torque wrench to ensure correct torque.
176F
A247.12
Nm/in-lbs
-DC 88
+DC 89
R/L1 91
S/L2 92
T/L3 93
U/T1 96
V/T2 97
W/T3
Figure 3.13 Use a Torque Wrench to Tighten the Bolts
Frame size Terminal
Torque
Bolt size
D
Line power
Motor
19–40 Nm
(168–354 in-lbs)
M10
Load sharing
Brake
8.5–20.5 Nm
(75–181 in-lbs)
M8
E
Line power
Motor
Load sharing
19–40 Nm
(168–354 in-lbs)
M10
Brake
8.5–20.5 Nm
(75–181 in-lbs)
M8
F
Line power
Motor
19–40 Nm
(168–354 in-lbs)
M10
Load sharing
19–40 Nm
(168–354 in-lbs)
M10
Brake
8.5–20.5 Nm
(75–181 in-lbs)
M8
Regen
8.5–20.5 Nm
(75–181 in-lbs)
M8
Table 3.2 Torque for terminals
3.4 Electrical Installation
3.4.1 Power Connections
NOTICE!
Cables–General Information
All cabling must comply with national and local
regulations on cable cross-sections and ambient
temperature. UL applications require 167°F [75
°
C] copper
conductors. For non-UL applications, 167°F and 194°F
[75° and 90
°
C] copper conductors are thermally
acceptable.
The power cable connections are situated as shown in
. Dimension cable cross-section in accordance
with the current ratings and local legislation. See
chapter 11.3.1 Cable lengths and cross-sections
for details.
To protect the adjustable frequency drive, use the
recommended fuses if there are no built-in fuses. Fuse
recommendations are provided in
.
Ensure that proper fusing is made according to local
regulation.
The AC line input connection is fitted to the line power
switch if included.
Figure 3.14 Power Cable Connections
NOTICE!
To comply with EMC emission specifications, shielded/
armored cables are recommended. If a non-shielded/
armored cable is used, see
Control Wiring for Non-shielded Cables
.
See
for correct dimensioning of
motor cable cross-section and length.
Installation
Instruction Manual
MG37A222
Danfoss A/S © Rev. 2014-02-07 All rights reserved.
25
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