5-2 MD60 AC Drive User Manual
Step 2. Remove the finger guard (refer to figure 5.2).
a. Press in and hold the locking tab.
b. Slide finger guard down and out.
Replace the finger guard when wiring is complete.
5.2 Verifying Drive AC Input Ratings
Match Available Power
It is important to verity that plant power meets the input power
requirements of the drive’s circuitry. Refer to table 5.4 for input
power rating specifications. Be sure input power to the drive
corresponds to the drive nameplate voltage and frequency.
5.2.1 Ungrounded Distribution Systems
To prevent drive damage, the MOVs connected to ground should be
disconnected if the drive is installed on an ungrounded distribution
system where the line-to-ground voltages on any phase could
exceed 125% of the nominal line-to-line voltage.
Figure 5.2 – Removing the Finger Guard
V/T2T/L3S/L2R/L1 U/T1 W/T3
BR+
BR-
Power Terminal
Block
Finger Guard
!
ATTENTION: MD60 drives contain protective MOVs
that are referenced to ground. These devices should
be disconnected if the drive is installed on an
ungrounded distribution system.
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