Power Wiring 4-3
MN767S
4.4.4 Optional Dynamic Brake Hardware Frame B Controls
If optional DB resistor is to be used, connect it to the + and BR terminals, see (see Figure 4-2). Dynamic Brake (DB)
Hardware must be installed on a flat, non-flammable, vertical surface for effective cooling and operation. The DB Resistors
get extremely hot during normal operation and must be mounted away from flammable surfaces and unsafe atmosphere.
4.4.5 Motor Connections
All cables must be shielded and the shields must be grounded at the enclosure cable entrance.
1. Connect the Motor leads to terminals U, V and W (see Figure 4-2 for location).
2. Connect the motor ground wire to the ground terminal (See Figure 4-2).
4.4.6 Long Motor Leads
The wire leads that connect the motor to the control are critical in terms of sizing, shielding and the cable characteristics.
Short cable runs are usually trouble free but fault-monitoring circuitry can produce numerous faults when long cables are
used. Refer to Table 4-1 for maximum cable lengths. Baldor recommends adding an optional load reactor to the output of
the control. The load reactor and/or common mode choke should be placed in close physical proximity to the control.
Unexpected faults may occur due to excessive charging current required for motor cable capacitance. If you use long
motor leads and experience unexpected trips due to current overload conditions and are not sure how to correctly size and
connect the optional load reactors, please contact your Baldor District representative. Baldor is always glad to assist.
Table 4-1 Fuse & Wire size / Terminal Torque Specifications
Hp
kW
Nominal
Input
Current
Fuse or
MCB
Supply Cable
Size
Nominal
Output
Current
Motor Cable
Size
Max Motor Cable
Length
Min
Brake
Resistor
Value
amps
amps
AWG
mm2
amps
AWG
mm2
feet
meters
ohms
500-600V +/-10% 3-Phase Input
1
0.75
2.2
3
16
1
1.7
16
1
164
50
47
2
1.5
4.1
6
16
1
3.1
16
1
328
100
47
3
2.2
5.4
6
16
1
4.1
16
1
328
100
47
5
4
7.6
10
14
1.5
6.1
14
1.5
328
100
47
7.5
5.5
11.7
16
12
2.5
9
12
2.5
328
100
47
10
7.5
16.1
20
12
2.5
14
12
2.5
328
100
22
15
11
17.3
20
10
4
18
12
2.5
328
100
22
20
15
24.1
25
10
4
24
10
4
328
100
22
30
22
46.6
63
6
10
39
6
10
328
100
12
40
30
54.1
63
4
16
46
6
10
328
100
12
60
45
69.6
80
3
25
62
4
16
328
100
12
Control Terminal Torque Settings of 4.5 lb-in (0.5 Nm)
Power Terminal Torque Settings of 9 lb-in (1 Nm)
For UL compliance Motor Cable to be Copper 75°C and Fuse current rating defined by ratings marked ( )*.
Wire size is based on 40°C surrounding temperature and fuses are based on 45°C surrounding temperature, max continuous
output and no harmonic current.
4.4.7 M-Contactor Connections
If required by local codes or for safety reasons, an M-Contactor (motor circuit contactor) may be installed. However,
incorrect installation or failure of the M-contactor or wiring may damage the control. If an M-Contactor is installed,
the control must be disabled for at least 200msec before the M-Contactor is opened or the control may be damaged.
M-Contactor connections are shown in Figure 4-3.
CAUTION:
If an M-Contactor is installed, the control must be disabled for at least 200msec before the M-Contactor
is opened. If the M-Contactor is opened while the control is supplying voltage and current to the motor,
the control may be damaged. Before the control is enabled, the M-Contactor must be closed for at least
200msec.
Содержание VS1STS Series
Страница 1: ...10 11 Installation Operating Manual MN767S VS1STS AC Microdrive ...
Страница 6: ...iv MN767S ...
Страница 28: ...5 8 Control Wiring MN767S ...
Страница 50: ...8 2 Customizing Your Application MN767S ...
Страница 54: ...9 4 Troubleshooting MN767S ...
Страница 56: ...A 2 Technical Specifications MN767S ...
Страница 68: ...D 2 Options and Kits MN767S ...
Страница 72: ...E 4 RS485 MODBUS Protocol MN767S ...