Motor considerations, Terminal block specifications – Rockwell Automation 21G PowerFlex 750-Series AC Drives User Manual
Page 133
Rockwell Automation Publication 750-IN001N-EN-P - April 2014
133
PowerFlex 750-Series AC Drives
Motor Considerations
Due to the operational characteristics of AC variable frequency drives, motors
with inverter grade insulation systems designed to meet or exceed NEMA MG1
Part 31.40.4.2 standards for resistance to spikes of 1600 volts are recommended.
Guidelines must be followed when using non-inverter grade motors to avoid
premature motor failures. Refer to Wiring and Grounding Guidelines for Pulse
Width Modulated (PWM) AC Drives, publication
for
recommendations.
Terminal Block Specifications
Table 7 - Wall Mount Frames 1…5 Power Terminal Block
Table 8 - Wall Mount Frames 6 and 7 Power Terminal Block
Table 9 - Wall Mount Frames 1…7 PE Grounding Stud
Frame
Wire Size Range
(1)
(2)
(1) Maximum/minimum wire sizes that the terminal block will accept - these are not recommendations.
(2) Terminal blocks are designed to accept a single wire.
Strip Length
Recommended
Torque
Recommended Tool(s)
Maximum
Minimum
1
4.0 mm
2
(10 AWG)
0.2 mm
2
(24 AWG)
8.0 mm
(0.31 in.)
0.57 N•m
(5 lb•in)
#2 Pozidrive®, M3 x 7
2
4.0 mm
2
(10 AWG)
0.2 mm
2
(24 AWG)
8.0 mm
(0.31 in.)
0.57 N•m
(5 lb•in)
#2 Pozidrive®, M3 x 7
3
16.0 mm
2
(6 AWG)
0.5 mm
2
(20 AWG)
10.0 mm
(0.39 in.)
1.2 N•m
(10.6 lb•in)
#2 Flat Screwdriver
4
25.0 mm
2
(3 AWG)
2.5 mm
2
(14 AWG)
10.0 mm
(0.39 in.)
2.7 N•m
(24 lb•in)
#2 Pozidrive®
492-C Phillips®
0.25 in. Flat Screwdriver
5
35.0 mm
2
(1 AWG)
10.0 mm
2
(8 AWG)
12.0 mm
(0.5 in.)
4.0 N•m
(35 lb•in)
#2 Pozidrive®
492-C Phillips®
0.25 in. Flat Screwdriver
Frame
Maximum Lug
Width
(1)
(1) Lugs are supplied by the user.
Recommended
Torque
Terminal Bolt Size
Recommended
Tool
6
34.6 mm (1.36 in.)
11.3 N•m (100 lb•in)
M8 x 1.25
13 mm Hex Socket
7
43.5 mm (1.71 in.)
11.3 N•m (100 lb•in)
M8 x 1.25
13 mm Hex Socket
Frame
Recommended
Torque
Terminal Bolt/Screw
Size
Recommended Tool
1
1.36 N•m (12 lb•in)
M4
T20 hexalobular (Torx)
#1 Flat Screwdriver
2
1.36 N•m (12 lb•in)
M4
7 mm Hex Deep Socket
3
3.4 N•m (30 lb•in)
M6
10 mm Hex Deep Socket
4
3.4 N•m (30 lb•in)
M6
10 mm Hex Deep Socket
5
3.4 N•m (30 lb•in)
M6
10 mm Hex Deep Socket
6
11.3 N•m (100 lb•in)
M8
13 mm Hex Socket
7
11.3 N•m (100 lb•in)
M8
13 mm Hex Socket