Duty Cycle And Switching Frequency 7; Trouble Shooting 7 - Siemens SIMOTICS M-1PH818 Instrucciones De Servicio

Service Instructions NFF
Electromagnetic Double Face Spring – Applied Brake
7.3 Duty cycle, switching frequency
The design as well as admissible loads on brakes as per braking torque, speed,
switching capacity are given under „Technical Data" (see Chapter 1) and the
dimensional drawing (appendix). If any of these data are exceeded consult the
manufacturer.
7.4 Trouble shooting (individual parts with Item-No. see chapter 4)
Störungen
Insufficient braking
effect
No braking effect
Brake does not release
when micro switch is
used:
No operational switch
indication
156
IP 66
Mögliche Ursachen
Friction surfaces are not free from
grease
Max. Air gap "off" exceeded due to
wear of friction lining
Brake not completely run-in
Brake has been overloaded
Spring rupture
Manual release (4) has been
actuated and not re-set
Max. Air gap „off" too large due to
wear of friction lining
Friction disc (2) is stuck on pinion
(15)
Armature disc (10) distorted
Coil connecting voltage too low
Coil defective
Feed line defective
Contact points loose
foreign particles in the air gap (e.g.
spring rupture)
Armature plate is
attracted against the coil body
because of:
- max. air gap has been exceeded
- foreign particles in the air gap
Stromag Dessau
Erforderliche Maßnahmen
replace friction disc (2)
re-adjust brake (chapter 8.3.), if
necessary replace friction disc (2)
Let brake run in
Replace brake
Dismantling of brake
manufacturer
See Chapter 4.3
Re-adjust brake (chapter 8.3.) if
necessary replace friction disc (2)
Replace friction disc (2) and pinion (15)
(chapter 8.4.)
Replace brake (chapter 5)
Check DC voltage supply
Replace brake (chapter 5)
Renew feed line
Re-tighten contact points
Dismantling of brake, contact
manufacturer
not being
Re-adjust brake (chapter 8.3.) if
necessary replace friction disc (2)
Check position of micro switch under
consideration of adjustment procedure of
micro switch
Dismantle and clean the brake
13
safety in motion
01.06.2009
contact