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Hyponic®
Operating and Maintenance Manual
Hyponic® Operating and Maintenance Manual
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www.SumitomoDrive.com
Brake Models FB-01A1, FB-02A1, and FB-05A1
FB Brake Assembly - Inspection, Adjustment & Maintenance
FB series brakemotors are designed to be mechanically rugged in design, electrically reliable and efficient in
operation. To maintain this reliable performance, the brake assembly must be inspected and adjusted periodically.
This section of the manual pertains specifically to the brake portion of the Hyponic® unit and provides all the
necessary information to insure long and trouble-free service.
Table 10
lists the standard specifications for Models FB-01A1, FB-02A1, and FB-05A1.
a) Construction
Figure 15
illustrates the construction of the brake. The restraining screw (14) fastens the brake shoe (5) and spacer
(15) onto the stationary core (1). The armature plate (3) is kept form rotation by the restraining screw (14) but moves
axially by electromagnetic attraction and the tension of the pressure spring (2). The brake lining (4) is fitted to the hub
(7) which is secured to the motor shaft with a key. The solenoid coil (17) is energized via a rectifier provided within the
conduit box.
1. Standard Brakemotor Specifications
2. Construction and Operating Principles
Table 10. FB-01A1, FB-02A1, and FB-05A1 Standard Specifications
Notes:
Above table applies to standard brake specification under standard brake torque. Special brakes may perform differently from those shown.
Initial
brake torque may be lower than specified brake torque. If this is the case, under light load start and stop the motor to wear-in the braking surface. To improve
performance for positioning accuracy or lifting applications, consider using fast braking action circuit. If the brake is operated at a rate greater than the Allowable
Brake Work Capacity, E0, the brake performance may degrade or become inoperable.
[1]
Also applies to wiring where brake is powered separately from the motor leads.
Brake
Model
Motor Capacity
Standard Brak-
ing Torque
ft - lbs
(N - m)
Braking Delay Time (sec)
Brake Work Capacity
Normal Braking Action
Fast Braking
Action
Allowable
E
0
(J/min)
Gap Adjust
(x 10
7
J)
Total
E
1
(x 10
7
J)
HP x 4P
kW x 4P
Standard Wiring
Inverter Wiring
[1]
FB-01A1
1/8
0.1
0.7 (1.0)
0.15 ~ 0.2
0.08 ~ 0.12
0.015 ~ 0.02
1080
2.6
6.7
FB-02A1
1/8 ~ 1/3
0.1 ~ 0.25
1.4 (2.0)
FB-05A1
1/4 ~ 1/2
0.2 ~ 0.4
2.9 (4.0)
0.1 ~ 0.15
0.03 ~ 0.07
0.01 ~ 0.015
b) Operating Principles
The brake is a (fail safe type) spring actuated type brake, which will release the brake mechanism when the solenoid
coil is energized and which will engage when the coil is de-energized.
When power is applied to the unit, the solenoid coil and the electric motor will energize, and the energized coil
attracts the armature plate (3) against the tension of the pressure spring (2). As a result, the brake lining (4) will
disengage, and the motor begins to run.
When the power is disconnected, the solenoid coil and the electric motor is de-energized. This causes the pressure
spring (2) to actuate the armature plate (3) which in turn presses the brake lining (4) against the brake shoe (5) and
brings the motor to a quick stop.
*
These parts are included in a complete brake kit.
No.
Part Name
1
Stationary Core*
2
Pressure Spring*
3
Armature Plate*
4
Brake Lining*
5
Brake Shoe*
6
Leaf Spring*
7
Hub*
8
C-type Retaining Ring
9
Cover
10
Set Screw (TEFC model only)
11
V-Ring
12
Fan (TEFC model only)
13
Waterproof Cover
14
Restraining Screw*
15
Spacer*
16
Waterproof Seal
17
Solenoid Coil*
18
Motor Shaft
19
Fan Side Bearing
Fig. 15 FB-01A1, FB-02A1, FB-05A1 Models
a) At regular intervals, check that:
•
the unit is operating normally.
•
the brake lining is not excessively worn (or gap G is normal).
•
all the mounting screws are securely tightened.
3. Inspection
