Shield termination - shld, Rfi filter grounding, Fuses and circuit breakers – Rockwell Automation 20D PowerFlex 700S Drive Ph I Control, Frames 1...11 User Manual
Page 19: Fuses and circuit breakers -5
Installation/Wiring
1-5
Figure 1.1 Typical Grounding
Shield Termination - SHLD
The Shield terminal (see
) provides a grounding
point for the motor cable shield. It must be connected to an earth ground by
a separate continuous lead. The motor cable shield should be connected to
this terminal on the drive (drive end) and the motor frame (motor end). Use
a shield terminating or EMI clamp to connect shield to this terminal.
RFI Filter Grounding
Using an optional RFI filter may result in relatively high ground leakage
currents. Therefore, the filter must only be used in installations with
grounded AC supply systems and be permanently installed and solidly
grounded (bonded) to the building power distribution ground. Ensure that
the incoming supply neutral is solidly connected (bonded) to the same
building power distribution ground. Grounding must not rely on flexible
cables and should not include any form of plug or socket that would permit
inadvertent disconnection. Some local codes may require redundant ground
connections. The integrity of all connections should be periodically
checked. Refer to the instructions supplied with the filter.
Fuses and Circuit Breakers
The PowerFlex 700S can be installed with either input fuses or an input
circuit breaker. Local/national electrical codes may determine additional
requirements for these installations. Refer to
for recommended
fuses/circuit breakers.
PE
R
(L1)
S
(L2)
T
(L3)
U
(T1)
V
(T2)
W
(T3)
DC
+
DC
–
Required
Input Fusing
Required Branch
Circuit Disconnect
BR1
BR2
!
ATTENTION: The PowerFlex 700S does not provide input
power short circuit protection. Specifications for the
recommended fuse or circuit breaker to provide drive input power
protection against short circuits are provided in
.