www.baldormotion.com
3-16 Basic Installation
MN1901
3.5.1 Motor circuit contactors
If required by local codes or for safety reasons, an M-Contactor (motor circuit contactor) may
be installed to provide a physical disconnection of the motor windings from the MintDrive
II
(see
section 3.5). Opening the M-Contactor ensures that the MintDrive
II
cannot drive the motor,
which may be necessary during equipment maintenance or similar operations. Under certain
circumstances it may also be necessary to fit a brake to a rotary motor. This is important with
hanging loads where disconnecting the motor windings could result in the load falling. Contact
your local supplier for details of appropriate brakes.
CAUTION
: If an M-Contactor is installed, the MintDrive
II
must be disabled at least
20ms before the M-Contactor is opened. If the M-Contactor is opened
while the MintDrive
II
is supplying voltage and current to the motor, the
MintDrive
II
may be damaged. Incorrect installation or failure of the
M-Contactor or its wiring may result in damage to the MintDrive
II
.
Ensure that shielding of the motor cable is continued on both sides of the contactor.
3.5.2 Motor power cable pin configuration - Baldor BSM rotary motors
Figure 8 shows the pin configuration for a typical Baldor motor cable, part number
CBL025SP-12:
Signal name
Motor / cable pin
Motor cable wire color
Motor U
1
Black, labeled ‘1’
Motor V
4
Black, labeled ‘2’
Motor W
3
Black, labeled ‘3’
Earth/ground
2
Green/Yellow
Thermal switch
A
Green
Thermal switch
B
White
Brake
C
Blue
Brake
D
Red
Cable connector end view
(female)
1
B
A
3
2
4
Motor power connector
(male)
1
B
A
3
2
4
C
D
C
D
Note:
Not all motors
are fitted with
a brake so
pins C and D
might not be
connected.
Figure 8 - Baldor motor power cable pin configuration
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