Mitsubishi Electric Super Helicross Series Instruction Manual page 14

3） Brake specifications
Table 5 shows the standard specifications for the brake.
Brake power
Number
Brake Output
of poles
model (kW)
(P)
Voltage(V)
SNB 0.8 0.75
SNB1.5 1.5 4
SNB2 2.2
Note 1: The braking torque values shown in the above table are the static friction torque values. Dynamic friction torque values will be
approximately 80% of the static friction torque values.
Note2: At starting first operation or after replacing the brake lining, the braking torque may be less than the specified torque. In this case, fit the
friction surfaces of the brake by applying the brake several times with a light load
4） Rectifier specifications
Table6 shows the standard specifications for the rectifier .
Output Power supply
(kW) voltage (V)
0.75～
200
2.2
.
5） Manual brake releasing procedure
Step １
a) Simplified manual brake releasing
For this brake releasing method, prepare the brake release bolts shown in Table 7
Loosen the fan cover clamp screws (4 screws), and then remove the fan cover. After
Step ２ Loosen the screws (item 3), and then remove the brake cover (item 1). Screw the machine
that, remove the fan and End-face V seal(outdoor type). (The fan is fixed by hexagon
socket head setscrews.)
screws into the threaded holes of the side plate. The machine screws will push the
Armature to release the brake. At the completion of manual brake releasing, be sure to
reset the brake.
Table 7 Simplified manual brake release bolt
Brake model
SNB0.8
SNB1.5
SNB2
b） One-touch manual brake releasing (optional)
～0.4kW.
The written contents of one-touch manual brake releasing(optional) are the same as that of 0.1
Please refer to P9
Notes: To manually release the brake, observe the following items:
Be sure to check that the brake is properly released.
Basically, reducing the gap to zero will release the brake. To check whether the brake is released,
manually turn the motor shaft. If you can turn the shaft, judge that the brake is released.
If a large tightening force is applied to the simplified manual brake release bolt, the Armature or
side plate may be distorted or damaged, and normal operation may not be possible. For this reason,
carefully tighten the manual release bolt.
If the manually released brake is not reset, do not operate the motor. Before starting full-scale
operation, be sure to check that the brake functions properly.
For simplified manual brake releasing, up to 50 times of releasing is allowable.
Table 5 Standard Specifications for Brake
Braking Braking
supply voltage Current
DC(V) (A)
200 0.24
200 90 0.25
200 0.37
Table6 Standard specifications for Rectifier
Output voltage
Control method
DC(V)
Half wave
90
rectification method
Simplified manual brake release bolt
M6 ｘ 40
M4×25
Braking torque
(Nm)
Initial gap
*Note 1 and 2
7.16 0.15(inserted)-0.25 (not inserted)
14.3 0.20(inserted)-0.30 (not inserted)
21.0 0.20(inserted)-0.30 (not inserted)
Ambient temperature and
Rating
Continuous
－ 12 －
Gap(mm)
Limit Initial
gap thickness
0.5
0.5
0.5
Installation
humidity
-15～+40°C
On terminal block
90%RH or less
a）Simplified manual brake
releasing（pattern 1）
b）Simplified manual brake
releasing（pattern 2）
Lining thickness
Limit
thickness
7.7 6.7
10.0 8.5
10.0 8.5