Baldor 18H Series Installation & Operating Manual page 27

Section 1
General Information
L1
Note 1 * Circuit
Breaker
Note 2
A1 B1
*Optional
Note 4
Line
Reactor
A2 B2
Note 2
L1
Series 18H
T1
Note 3
A1 B1
*Optional
Note 4
Load
Reactor
A2 B2
Note 3
Note 3
*
Optional
Note 4
Load
Reactor
Note 3
M=Contacts of optional M-Contactor
3-16 Receiving & Installation
Figure 3-3 Three Phase AC Power and Motor Connections
L2 L3
Earth
C1
C2
L2 L3
Notes:
1.
Baldor
2.
3.
Control
T2 T3
4.
5.
C1
C2
T2 T3
T1 G
* AC Motor
Optional Connection of
Load Reactor and M-Contactor
T1 T2 T3
A1 B1 C1
A2 B2 C2
M M M
T2 T3
T1 G
* Motor
See Recommended Tightening Torques in Section 7.
L1 L2
Alternate *
Fuse
Connection
A1 B1
*
Optional components not provided with 18H Control.
See "Protective Devices" described previously in this section.
Shield wires inside a metal conduit.
Metal conduit should be used to shield output wires (between
control and motor). Connect conduits so the use of Load Reactor
or RC Device does not interrupt EMI/RFI shielding.
See Line/Load Reactors described later in this section.
A motor circuit contactor is recommended to provide a positive
disconnect and prevent motor rotation which could pose a safety
hazard. Connect the M-Contactor as shown. The contactor
should open the enable input at J1-8 at least 20 msec before the
main M-contacts open to prevent arcing at contacts. This greatly
increases contactor life and allows use of IEC rated contactors.
To Power Source
(Rated Coil
Voltage)
J1
*
M Enable
7
8
9
L3
Note 1
C1
Note 5
*
Optional
RC Device
*
M-Contactor
Electrocube
RG1781-3
Note: Close "Enable"
after "M" contact closure.
MN718