Figure 8-12: FB-10E and 15E Models
* These parts are included in a complete brake kit.
No. Part Name
1 Stationary Core*
2 Pressure Spring*
3 Brake Release Support
4 Armature*
5 Shifting Pin
6 Brake Release Lever
7 Retaining Clip
8 Brake Shoe*
9 Brake Lining*
10 Leaf Spring*
11 Hub*
12 C-type Retaining Ring
13 Cover
14 C-type Retaining Ring
15 Fan
16 Gap Adjusting Nut*
17 Spring Washer
18 Adjusting Washer*
19 Stud Bolt*
20 Solenoid Coil*
21 Fan Side Bearing
22 Motor Shaft
23 Attachment Screw
24 V-Ring
25 Waterproof Cover
26 Waterproof Seal
The brake is a (fail safe type) spring actuated type brake, that releases the brake mechanism when the solenoid coil is
energized and engages when the coil is de-energized.
When power is applied to the unit, the solenoid coil and the electric motor become energized and the energized
coil attracts the armature plate (4) against the tension of the pressure spring (2). As a result, the brake lining (9) will
disengages, and the motor begins to run.
When the power is disconnected, the solenoid coil and the electric motor are not energized. This causes the pressure
spring (2) to actuate the armature plate (4) which in turn presses the brake lining (9) against the brake shoe (8) and
brings the motor to a quick stop.
b) Operating Principles
a) At regular intervals, check that:
b) Manual Brake Release Procedure
•
the unit is operating normally.
•
the brake lining is not excessively worn (or gap G is normal).
•
all the mounting screws are securely tightened.
FB-5E, FB-8E, FB-10E, and FB-15E brakemotors are equipped with a one-touch release mechanism. To manually release
the brake with power to the unit turned o, pull the brake release lever out from its holder and push it forward toward
the reducer. Releasing the lever will re-engage the brake.
3. Inspection
4. Gap Inspection
a. Remove shifting pin (5) and brake release lever (6).
b. Remove cover (13).
c. Remove fan (15) by removing retaining ring (14).
d. Remove waterproof seal (26).
e. Insert a gap gage into the space between stationary core (1) and armature plate (4). Measure the gap size at
three appropriate circumferential points.
f. Check for brake performance by turning system power on and o a few times.
g. The gap needs to be adjusted if the values are close to the allowable limit listed in Table 8-26.
The brake lining will wear after the unit has been used for a long period of time. Regularly check that gap G (Figure
8-11 and 8-12) is at an acceptable value. If the gap G become too large, the solenoid coil may fail to pull in the
armature plate and hence cannot release the brake, resulting in the unit remaining in a continuously braked
condition. Follow these steps to inspect the brake gap:
Brake Type
Gap value G, in. (mm)
Spec. value Allowable limit
FB-5E, FB-8E
0.014 - 0.017
(0.35 - 0.45)
0.040
(1.0)
FB-10E, FB-15E
0.047
(1.2)
Table 8-26: Brake Gap Size
www.SumitomoDrive.com
Cyclo® 6000 Operating and Maintenance Manual
Cyclo® 6000 Cyclo® 6000
Cyclo® 6000 Operating and Maintenance Manual
64 65
8. DAILY INSPECTION AND MAINTENANCE 8. DAILY INSPECTION AND MAINTENANCE
To Next Page
Loading...