Motor Brake Connections; Motor Connections; M-Contactor - Baldor 15H SERIES 15H Installation & Operating Manual

Section 1
General Information

Motor Brake Connections

Motor Connections

Series 15H
T1
Note 1
A1 B1
*Optional
Note 2
Load
Reactor
A2 B2
Note 1

M-Contactor

M
M=Contacts of optional M-Contactor
MN715
For motors with spring set brakes, connect the brake power leads and the motor power
leads separately. Because the inverter has variable voltage output to the motor, the
inverter may not supply enough power at low frequencies for proper brake operation. If
using a motor with an internally connected brake, the brake power leads must be
connected to a separate power source for proper brake operation.
Motor connections are shown in Figure 3-17.
Figure 3-17 Motor Connections
Notes:
1.
Baldor
2.
Control
3.
T2 T3
C1
* Optional components not provided with control.
C2
Note 3
T2 T3
T1 G
* AC Motor
If required by local codes or for safety reasons, an M-Contactor (motor circuit contactor)
may be installed. However, incorrect installation or failure of the M-contactor or wiring
may damage the control. If an M-Contactor is installed, the control must be disabled for
at least 20msec before the M-Contactor is opened or the control may be damaged.
M-Contactor connections are shown in Figure 3-18.
Figure 3-18 M-Contactor Diagram
T1 T2 T3
M M
T2 T3
T1 G
* Motor
Metal conduit should be used. Connect conduits so the use of Load
Reactor or RC Device does not interrupt EMI/RFI shielding.
See Line/Load Reactors described previously in this section.
Use same gauge wire for Earth ground as for L1, L2 and L3.
See Recommended Tightening Torques in Section 6.
To Power Source
(Rated Coil Voltage)
J4
*
M Enable
7
Note: Close "Enable"
8
after "M" contact closure.
9
See Recommended Tightening Torques in Section 6.
* Optional
* M-Contactor
RC Device
Electrocube
RG1781-3
Receiving & Installation 3-19