4-2 1000 Series / Guide to Installation, Troubleshooting, and Maintenance
4.3
Insulation Tests
Any site insulation tests must be performed before making electrical connections to the
drive. These tests should conform to all applicable national and local codes. A suggested
procedure for checking installation insulation is outlined below.
!
Attention
Before performing the insulation tests, make certain that the drive is
disconnected from the input power (S, T or R, S, T or R1, R2, S1, S2,
T1, T2). Also verify that the motor cable is disconnected from drive
output terminals (U, V, W) and from the motor.
•
Measure the insulation resistance of the motor between the phases and between
each phase and protective ground. The voltage range of the meter must be at least
equal to the line voltage but not higher than 1,000 V. The insulation resistance
must be greater than 1 M
Ω
.
•
Measure the insulation resistance of the motor cable between the phases and
between each phase and protective ground. The insulation resistance must be
greater than 1 M
Ω
.
4.4
Ground Connections
Proper grounding procedures are essential to the safe, successful operation of the drive.
Careful attention to these procedures can prevent electrical noise from disrupting drive
operation.
The drive, power supply, motor, and control circuits should all share a common earth
ground. Refer to the appropriate connection diagram as listed in Table 4-1 below. Refer
to Section 4.2 for wiring requirements. Ground connection terminal specifications for the
various drives are provided in the tables summarized in Table 4-1.
PE
Ground terminal designation
Ground terminals are designated by the IEC symbol at left, by PE
(protective earth), or both. Such terminals are internally connected and tied
to the chassis or enclosure. They are intended for connecting both the
protective earth ground electrode as well as any external protective
grounding conductors.
Table 4-1—Power/Ground Connection Tables
Drive
Connection
Diagram
Terminal
Specifications
1100
Figure 4-1
Table 4-4
1105
Figure 4-2
Table 4-5
1110
Figure 4-4
Table 4-6
1120
Figure 4-5
Table 4-7
1130
Figure 4-6
Table 4-8
1200
Figure 4-7
Table 4-9
1230
Figure 4-8
Table 4-10
Summary of Contents for 11100
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