3.6.5 Torque
When tightening all electrical connections, it is very important to tighten
with the correct torque. Too low or too high torque results in a bad elec-
trical connection. Use a torque wrench to ensure correct torque.
Figure 3.49: Always use a torque wrench to tighten the
bolts.
Frame size Terminal Torque Bolt size
D1, D2, D3 and D4 Line power
Motor
19 Nm (168 in-lbs) M10
Load sharing
Brake
9.5 (84 in-lbs) M8
E1 and E2 Line power
Motor
Load sharing
19 NM (168 in-lbs) M10
Brake 9.5 (84 in-lbs) M8
F1, F2, F3 and F4 Line power
Motor
19 Nm (168 in-lbs) M10
Load sharing
Brake
Regen
19 Nm (168 in-lbs)
9.5 Nm (84 in-lbs)
19 Nm (168 in-lbs)
M10
M8
M10
Table 3.3: Torque for terminals
3.6.6 Shielded Cables
It is important that shielded and armored cables are connected properly to ensure high EMC immunity and low emissions.
Connection can be made using either cable connectors or clamps:
• EMC cable connectors: Generally available cable connectors can be used to ensure an optimum EMC connection.
• EMC cable clamp: Clamps allowing for easy connection are supplied with the adjustable frequency drive.
3 How to Install VLT AQUA High Power Instruction Manual
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