Danfoss VLT FC 300 Service Manual

1.7 General Torque Tightening Values
For fastening hardware described in this manual, the torque values in the tables below are used. These values are not
intended for SCR, diode, or IGBT fasteners. See the instructions included with those replacement parts for correct values.
Shaft Size Drives Size
Torx/Hex
Class A
Nm [in-lbs]
Class Bin
Nm [in-lbs]
M4 T20/7 mm [0.28 in] 1.2 (10) 0.8 (7)
M5 T25/8 mm [0.31 in] 2.3 (20) 1.2 (10)
M6 T30/10 mm [0.39 in] 3.9 (35) 2.3 (20)
M8 T40/13 mm [0.51 in] 9.6 (85) 3.9 (35)
M10 T50/17 mm [0.67 in] 19 (169) 9.6 (85)
M12 18 mm [0.71 in]/19 mm
[0.75 in]
19 (169)
Table 1.5 Torque Values Standard Thread
Shaft Size Drives Size
Torx/Hex
Class A
Nm [in-lbs]
Class B
Nm [in-lbs]
M4.8 T25 5.7 (50) 3.1 (27)
M5 T25 1.7 (15)
Table 1.6 Torque Values for Thread Cutting into Metal
Shaft Size Drives Size
Torx/Hex
Class A
Nm [in-lbs]
Class Bin
Nm [in-lbs]
M4 T20 2.8 (24) 2.8 (24)
M5 T25 5.1 (45) 4.0 (35)
Table 1.7 Torque Values for Thread Forming into Plastic
Class A: Clamping metal Class B: Clamping PCA or plastic
Optional Equipment
Location
Main Enclosure Option Cabinet
RFI filter X
Electrical fuses only X
Contactor* X
Disconnect* X
Circuit breaker* X
Contactor + disconnect* X
Table 1.8 Options Locations
*Contactor, disconnect, or circuit breaker options always include fuses. When these options are selected, the electrical fuses are in the options
cabinet.
Introduction Service Manual
10 Danfoss A/S © Rev. 2014-02-10 All rights reserved. MG94A222
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Danfoss VLT FC 300 Specifications

General

Brand	Danfoss
Model	VLT FC 300
Category	DC Drives
Language	English