Rockwell Automation MPF-Bxxx Food Grade Servo Motor User Manual
Page 5
MP-Series Food-grade Servo Motor with 100 mm to 165 mm Frame Size 5
Rockwell Automation Publication MP-IN004E-EN-P - January 2014
•
Always provide a drip loop in each cable to carry liquids away from the connection to the
motor.
•
If possible, provide shields that protect the motor housing, shaft seals, and their
junctions from product contamination, caustic agents, and high pressure fluids.
•
Shaft seals are subject to wear and require periodic inspection and replacement.
Replacement is recommended every 3 months, not to exceed 12 months, depending on
use. Refer to
for more information on shaft seals.
•
Inspect the motor and seals for damage or wear on a regular basis. If damage or excessive
wear is observed, replace the item.
•
You can seal the motor front flange to the driven equipment by applying a bead of food
grade RTV around the periphery of the joint between the motor and the machine
surfaces. Use of a gasket or RTV on the mating surfaces is not recommended, as this can
cause misalignment of the shaft and result in damage to the motor and/or driven
equipment.
•
The brake option on this servo motor is a spring-set holding brake that releases when
voltage is applied to the brake coil. A separate power source is required to disengage the
brake. This power source can be applied by a servo motor controller or manual operator
control.
If system main power fails, holding brakes can withstand occasional use as stopping
brakes. However, this creates rotational mechanical backlash that can cause damage to
the system, increase brake wear, and reduce brake life.
IMPORTANT
Holding brakes are not designed to stop rotation of the motor shaft, and they are not intended to be used as a
safety device. They are designed to hold a motor shaft at 0 rpm for up to the rated brake holding torque.
Follow these steps to prevent motor shaft rotation.
1. Command the servo drive to 0 rpm.
2. Verify the motor is at 0 rpm.
3. Engage the brake.
4. Disable the drive.
Disabling the drive removes the potential for brake wear caused by a badly-tuned servo system oscillating
the shaft.
The cable enters beneath the
motor and forms a drip loop.
The cable enters above the
motor and does not form a
drip loop.