Connection Tightening Torques - Danfoss VLT HVAC Drive FC 102 Operating Manual

Specifications

8.8 Connection Tightening Torques

When tightening all electrical connections, it is important to tighten with the correct torque. Too low or too high torque
results in a bad electrical connection. To tighten the bolts and to ensure the correct torque, use a torque wrench.
Enclosure Size
D1h/D3h/D5h/D6h
D2h/D4h/D7h/D8h
Table 8.10 Torque for Terminals
8 8
Apply the correct torque when tightening fasteners in the locations that are listed in Table 8.11. Too low or too high torque
when fastening an electrical connection results in a bad electrical connection. To ensure correct torque, use a torque
wrench.
Location
Mains terminals
Motor terminals
Ground terminals
Brake terminals
Load sharing terminals
Regeneration terminals (Enclosures E1h/E2h)
Regeneration terminals (Enclosures E3h/E4h)
Relay terminals
Door/panel cover
Gland plate
Heat sink access panel
Serial communication cover
Table 8.11 Fastener Torque Ratings
72
®
VLT HVAC Drive FC 102
Terminal
Mains
Motor
Load sharing
Regen
Ground
Brake
Mains
Motor
Regen
Load sharing
Ground
Brake
Bolt size
M10/M12
M10/M12
M8/M10
M8
M10/M12
M8
M10/M12
_
M5
M5
M5
M5
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Torque [Nm (in-lb)]
19–40 (168–354)
8.5–20.5 (75–181)
19–40 (168–354)
8.5–20.5 (75–181)
Torque [Nm (in-lb)]
19 (168)/37 (335)
19 (168)/37 (335)
9.6 (84)/19.1 (169)
9.6 (84)
19 (168)/37 (335)
9.6 (84)
19 (168)/37 (335)
0.5 (4)
2.3 (20)
2.3 (20)
3.9 (35)
2.3 (20)
Bolt size
M10
M8
M10
M8
MG16D402