Chapter 5 Main Circuit TerminalsME300
5-3
Press the clip on both sides,
and take out by rotating.
Terminals for connecting DC reactor, external brake resistor and DC circuit
Terminals for connecting the DC reactor, as shown in Figure 5-2 below, are 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
to DC-; otherwise, the drive will be damaged.
Connect DC+ and DC- in common DC BUS applications. Refer to Section 5-2 (Main
Circuit Terminals) for the wiring terminal specification and the wire gauge
information.
Open the front cover
Open the front cover before connecting the main circuit terminals and control circuit terminals. Open
the cover according to the figure below.
The figure below shows the Frame A model for example. Opening the cover on other frame sizes is
similar.
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