Description and operation
Electromagnetic brake with negative operation, whose braking action is exercised in the absence of power supply.
When the power supply (7) is interrupted, the excitation coil is no longer powered and therefore does not exert the magnetic force necessary to restrain the mobile armature (1) which, pushed by the pressure spring (2), compresses the brake disk (3) against the motor flange (6) on one side and the armature itself on the other, thereby creating a braking action.
The allowed rated supply voltage variation for the brake is ±10%.
Adjustment
Two different types of adjustment are possible.
Air gap adjustment
For proper operation, the air gap S between the electromagnet (7) and the mobile armature (1) must be between the limits indicated in the table (Snom-Smax); adjust using the threaded bushes (12), using a thickness gauge to make sure that the desired air gap Snom is reached.
Braking torque adjustment
This is done using the adjuster ring (9) according to the instructions in the table (Cn = rated torque; ΔC = torque variation per tooth).
If the hand release lever (8) is present, once the braking torque is adjusted it is also necessary to adjust the free stroke of the lever before release begins, using the holding data of the lever itself.
Brake intervention time
For the DC brake, it is possible to improve the braking time by directly interrupting the brake power supply via the switch.
DC Brake |
56 |
63 |
71 |
80 |
90 |
100 |
112 |
132 |
160 |
180 |
200 |
|
Snom [mm] |
0,15 |
0,20 |
0,20 |
0,20 |
0,20 |
0,30 |
0,30 |
0,30 |
0,40 |
0,60 |
0,60 |
|
Smax [mm] |
- |
0,50 |
0,50 |
0,50 |
0,50 |
0,70 |
0,80 |
1,00 |
1,00 |
1,00 |
1,00 |
|
Cn [Nm] * |
1,0 |
4,0 |
4,0 |
8,0 |
16,0 |
32,0 |
60,0 |
80,0 |
150,0 |
260,0 |
400,0 |
|
ΔC [Nm] |
- |
0,10 |
0,10 |
0,36 |
0,60 |
1,20 |
1,50 |
2,10 |
2,10 |
2,50 |
2,50 |
|
Braking time [ms] |
30,0 |
45,0 |
50,0 |
70,0 |
90,0 |
120,0 |
180,0 |
210,0 |
230,0 |
250,0 |
250,0 |
|
Rapid braking time [ms] |
20,0 |
25,0 |
30,0 |
40,0 |
45,0 |
60,0 |
110,0 |
140,0 |
180,0 |
220,0 |
220,0 |
|
Release time [ms] |
12,0 |
15,0 |
30,0 |
35,0 |
50,0 |
65,0 |
75,0 |
90,0 |
110,0 |
130,0 |
130,0 |
|
Rapid release time [ms] |
8,0 |
12,0 |
20,0 |
25,0 |
35,0 |
45,0 |
60,0 |
70,0 |
90,0 |
110,0 |
110,0 |
|
Absorbed power [W] |
20,0 |
20,0 |
20,0 |
25,0 |
35,0 |
55,0 |
55,0 |
65,0 |
65,0 |
70,0 |
70,0 |
|
Noise level [dB] ** |
39,0 |
36,0 |
36,0 |
37,0 |
37,0 |
38,0 |
38,0 |
39,0 |
42,0 |
45,0 |
45,0 |
|
Max speed [rpm] |
3600 |
3600 |
3600 |
3600 |
3600 |
3600 |
3600 |
3600 |
1800 |
1800 |
1800 |
|
Weight [kg] |
1,5 |
1,5 |
1,5 |
2,2 |
3,1 |
8,3 |
8,3 |
12,0 |
14,3 |
24,8 |
36 |
Increased speed for INTORQ brakes (LENZE) contact UT Neri.
* Braking Torque
** Indicative values for braking
1. Mobile armature
2. Springs
3. Brake disc
4. Driver
5. Motor shaft
6. Motor flange
7. Electromagnet
8. Release lever
9. Adjuster ring
10. Seeger
11. Dust protection ring
12. Threaded bush
S. Air gap
13. IP 65 protection
