276
ACQ550-U1 User’s Manual
Technical data
IT systems
WARNING!
Do not attempt to install or remove the EMC filter screws EM1, EM3, F1
or F2 while power is applied to the drive’s input terminals.
For IT systems (an ungrounded power system or a high-resistance-grounded [over
30 ohm] power system):
•
Disconnect the ground connection to the internal EMC filter, see section
Disconnecting the internal EMC filter
on page
.
•
Where EMC requirements exist, check for excessive emission propagated to
neighboring low voltage networks. In some cases, the natural suppression in
transformers and cables is sufficient. If in doubt, use a supply transformer with
static screening between the primary and secondary windings.
•
Do NOT install an external RFI/EMC filter. Using an EMC filter grounds the input
power through the filter capacitors, which could be dangerous and could damage
the drive.
Drive’s power connection terminals
The following table provides specifications for the drive’s power connection
terminals.
Frame
size
U1, V1, W1
U2, V2, W2
BRK+, UDC+ terminals
Earthing PE terminal
Minimum
wire size
Maximum
wire size
Tightening
torque
Maximum
wire size
Tightening
torque
mm
2
AWG
mm
2
AWG
N·m
lb·ft
mm
2
AWG
N·m
lb·ft
R1
1
0.75
18
16
6
1.3
1
16
6
1.3
1
R2
1
0.75
18
16
6
1.3
1
16
6
1.3
1
R3
1
2.5
14
25
3
2.7
2
25
3
2.7
2
R4
1
10
8
50
1/0
5.6
4
50
110
5.6
4
R5
1
16
6
70
2/0
15
11
70
2/0
15
11
R6
2
95
3
3/0
3
105
350 MCM
40
30
105
350 MCM
40
30
00467918.xls C
1
Aluminium cable cannot be used with frame sizes R1…R5 because of its lower capacity.
2
Aluminium cable cannot be used with type ACQ550-01-290A-4 because of the terminal size.
3
See section
Power terminal considerations – R6 frame size
on page
Note:
See the recommended cable sizes for different load currents in section
.
Summary of Contents for ACQ550-U1-011A-6
Page 1: ...ACQ550 User s Manual ACQ550 U1 Drives 1 200 hp ...
Page 4: ......
Page 10: ...10 ACS550 U1 User s Manual Table of contents ...
Page 42: ...42 ACQ550 U1 User s Manual Start up control with I O and ID Run ...
Page 56: ...56 ACQ550 U1 User s Manual Control panel ...
Page 68: ...68 ACQ550 U1 User s Manual Application macros ...
Page 250: ...250 ACQ550 U1 User s Manual Fieldbus adapter ...
Page 266: ...266 ACQ550 U1 User s Manual Maintenance ...
Page 314: ...314 ACQ550 U1 User s Manual Index ...
