Chapter 5 Main Circuit TerminalsMH300
counterclockwise (as viewed from the shaft end of the motor, refer to the pointed
direction in the figure below) when it receives a forward operation command. To
permanently reverse the direction of rotation, exchange any two motor leads.
Terminals for connecting DC reactor, external brake
resistor
and DC circuit
These are the terminals for connecting the DC reactor to improve the power factor
and harmonics. At delivery they are shorted by a jumper. Remove the jumper before
connecting the DC reactor.
You must tightly fasten the jumper when it does not connect the DC reactor, use
DC+/+1, +2/B1 to execute common DC bus, or connect with a brake resistor;
otherwise the drive might lose power or break the terminals.
Connect a brake resistor in applications with frequent deceleration, short
deceleration time, too low braking torque, or increased braking torque.
Connect the external brake resistor to the terminals +2/B1, B2 on AC motor drives.
DO NOT short-circuit or connect a brake resistor directly to DC+/+1 and DC-, +2/B1
and DC-; otherwise the drive will be damaged.
Connect DC+/+1 and DC- in common DC bus applications. Refer to Section 5-2
(Main Circuit Terminal) for the wiring terminal specification and the wire gauge
information.
Remove the front cover
Remove the front cover before connecting the main circuit terminals and control circuit terminals.
Remove the cover according to the figure below.
The figure below shows the Frame A model for example. Removing the cover on the other frame sizes
is similar.
Press the clip on both sides,
and take out the front cover
by rotating.
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