4-2 Power Wiring
MN767S
4.3 Protective Devices
Recommended fuse sizes are based on the following:
115% of maximum continuous current for time delay.
150% of maximum continuous current for Fast or Very Fast action.
Note:
These recommendations do not consider harmonic currents or surrounding temperatures greater than 45°C. Be sure
a suitable input power protection device is installed. Use the recommended fuses and wire sizes shown in Table 4-1
is based on the use of copper conductor wire rated at 75°C. The table is specified for NEMA B motors.
Fast Action Fuses: 240VAC, Buss® KTN; 460VAC, Buss® KTS
Very Fast Action: 240VAC, Buss® JJN; 460VAC, Buss® JJS
Semiconductor:
240VAC, Ferraz Shawmut A50QS
Buss® is a trademark of Cooper Industries, Inc.
4.4 Electrical Installation
All interconnection wires between the drive, AC power source, motor, host control and any operator interface stations should
be in metal conduits or shielded cable must be used. Use UL Listed Fork connectors that are of appropriate size for wire
gauge being used. Connectors are to be installed using crimp tool specified by the manufacturer of the connector. Only
Class 1 wiring should be used.
4.4.1 Branch Circuit Protection
These devices require branch circuit protection. Branch circuit protection shall be provided. The size of the Branch Circuit
Protection Fuse shall be as shown in the ratings table or equivalent.
4.4.2 Single Phase Input Power Connections for 1 Phase Control
All cables must be shielded and the shields must be grounded at the enclosure cable entrance.
1. Connect the single phase input power wires to an appropriate interrupter and protection.
2. Connect the single phase AC input power leads to terminals L1/L and L2/N of the control (see Figure 4-2 for location).
3. Connect the power ground wire to the ground terminal. (See Figure 4-2.)
4.4.3 Three Phase Input Power Connections for 3 Phase Control
All cables must be shielded and the shields must be grounded at the enclosure cable entrance.
1. Connect the three phase input power wires to an appropriate interrupter and protection.
2. Connect the three phase AC input power leads to terminals L1/L. L2/N and L3 of the control (see Figure 4-2 for location).
3. Connect the power ground wire to the ground terminal (see Figure 4-2).
Figure 4-2 Wiring Locations
+
BR
U
V
W
Frame B
Frame B
(VS1STS51 shown
as an example)
See Recommended Tightening
Torques in Table 4-1.
L1/L L2/N L3
Summary of Contents for VS1STS Series
Page 1: ...10 11 Installation Operating Manual MN767S VS1STS AC Microdrive ...
Page 6: ...iv MN767S ...
Page 28: ...5 8 Control Wiring MN767S ...
Page 50: ...8 2 Customizing Your Application MN767S ...
Page 54: ...9 4 Troubleshooting MN767S ...
Page 56: ...A 2 Technical Specifications MN767S ...
Page 68: ...D 2 Options and Kits MN767S ...