Rockwell Automation Publication MM-IN001B-EN-P - February 2022
25
Kinetix MMA Asynchronous Main Motors Installation Instructions
Brake: Hand-release
The brake hand-release is an additional option that is available for all shaft heights except for shaft height 225 with 400V AC coil brake. The hand-release feature provides
the user the ability to disengage the brake from holding the rotor without the need to electrically energize the brake. When installed the brake hand-release has an
operational range of 10° of the installed/neutral position.
Figure 9 - Brake Hand-release Location
Install the Brake Hand-release
The brake hand-release installs into an opening on the top or right side of the motor blower. See
1.
Locate the mounting hole on the motor blower.
2.
To access the mounting threads, spread the rubber gasket.
3.
Verify that the foam washer is attached to the hand-release bolt.
4.
Attach the brake hand-release to the motor and hand-tighten.
Operate the Brake Hand-release
The brake hand-release is not electrically wired to the motor or blower terminal boxes. It is a manually operated
mechanical brake release. This allows the operators to provide slight movements while the holding brake is applied.
1.
When installed, the brake hand-release is in the neutral position and has the holding brake engaged.
2.
To disengage the holding brake, move the brake hand-release lever 10° and hold it in that position.
This allows a second operator to move the machinery with reasonable effort.
Over time, as the brake is used, the brake pad will wear. This wear changes the amount of force that is needed to release the brake.
3.
To reengage the holding brake, release the brake hand-release lever. The spring force returns the brake hand-release to the neutral position.
It is recommended to remove the brake hand-release lever in between uses.
Table 18 - Brake Voltage, Power, Speed, and Holding Torque
Motor Cat. No.
Brake Cat. No.
Holding Torque (N•m)
Holding Torque with
Hand-release Feature
(N•m)
Rated Supply Voltage
(+/- 10% tolerance)
Power (Watts)
Maximum Allowable
Speed (rpm)
MMA-B080
xxx
C4, C5, C6, C7
16 N•m
No reduction
24V DC
30
4000
MMA-B100
xxx
D4, D5, D6, D7
80 N•m
No reduction
24V DC
50
3600
MMA-B132
xxx
E4, E5, E6, E7
200 N•m
(1)
(1)
For brake options E, F, and G, options
x
4 and
x
5 have a holding torque and options
x
6 and
x
7 have a slightly reduced holding torque because of the added hand-release feature.
150 N•m
24V DC
85
3600
MMA-B132
xxx
MMA-B160
xxx
F4, F5, F6, F7
400 N•m
24V DC
100
3600
MMA-B160
xxx
MMA-B180
xxx
MMA-B225
xxx
G4, G5, G6, G7
600 N•m
400 N•m
24V DC
110
3000
MMA-B225
xxx
H4, H5
1440 N•m
Hand-release not
available
400V AC
920 Release
230 Holding
2300
MMA-B225
xxx
J4, J5
2400 N•m
Hand-release not
available
400V AC
920 Release
230 Holding
2300
IMPORTANT
The brake hand-release is shipped unattached and must be connected to the motor during installation.
See
for information on the location of the brake hand-release.
Motor Cat. No.
Hand-release Position
MMA-B080
xxx
Top Side
MMA-B100
xxx
Top Side
MMA-B132
xxx
Right Side
MMA-B160
xxx
Right Side
MMA-B180
xxx
Right Side
MMA-B225
xxx
Right Side
Right Side
Range of Motion: 10°