Nidec LEROY-SOMER FFB Guide D'installation page 14

This document complements general manual ref. 1889 (recommendations), ref. 4850 (LSES motor), ref. 4155
(LSRPM motor) and guide FFB brake maintenance ref. 5287. All documents are downloadable: www.leroy-somer.com
FFB brake motors are units consisting of an induction motor and a failsafe braking system (safety brake).
This brake motor benefits from the experience of one of the largest manufacturers in the world, using state-of-the-art technology in
automation, specially selected materials and rigorous quality control. As a result, the regulatory authorities have awarded our motor
factories the ISO 9001 - Edition 2015 international certificate.
These symbols appear in this document whenever it is important to take special precautions during installation, operation,
maintenance or servicing of the brake motors.
It is prohibited to drive the extension in manual rotation and the fan with the parking brake applied, or the
brake released under load.
General danger
These recommendations, instructions and descriptions refer to standard use. They do not take account of non-standard
versions or special adaptations. Failure to comply with these recommendations can lead to premature wear and tear of the
motor and can invalidate the manufacturer warranty.
Make sure that the brake motor is compatible with its environment before its installation and also throughout its life.
The following preliminary precautions must be taken before working on any stationary device:
• Mains voltage disconnected and no residual voltage present
• Careful examination of the causes of the stoppage (blocked transmission - loss of phase - cut-out due to thermal
protection - lack of lubrication, etc.)
Electric brake motors are industrial products. They must therefore be installed by qualified, experienced and authorized
personnel. The safety of people, animals and property must be ensured when fitting the motors into machines (please refer
to current standards).
Particular attention must be given to equipotential ground or earthing connections.
Safety of personnel: Protect all rotating devices before power-up. If a brake motor is started up without a coupling device
having been fitted, carefully immobilize the key in its location. All measures must be taken to ensure protection against the
risks which arise when there are rotating parts (coupling sleeve, pulley, belt, fan, etc.). Personal protective equipment must
be worn. In the case of a brake motor delivered without a hood and without a fan, there are burning and cutting risks.
After work is carried out, the lids of the terminal box and its cover must always be closed.
Beware of backdriving
When the brake motor is fitted with an active brake release lock off system (DLM), it is vital to ensure safety (of people and
property) in exposed areas, (compliance with EN13135).
Before any intervention on the brake, check that it holds no load.
- After an operating period, certain parts of the brake motor may be hot and are likely to cause burns.
2
GENERAL WARNING
Electrical hazard
risk of serious or mortal injury
Mechanical hazard
risk of serious or mortal injury
Installation guide FFB brake motors
5286 en - 2021.01 / e