Technical specifications
INTORQ | BA 14.0215 | 07/2019
16
4.3
Switching times
The switching times listed here are guide values which apply to DC switching with rated air gap s
LN
, warm
coil and standard characteristic torque. The switching times given are mean values and subject to vari-
ations. The engagement time t
1
is approximately 5 times longer for AC switching.
t
t
M
t
2
t
12
t
11
t
1
M
dyn
U
0.1M
dyn
Fig. 3:
Operating/switching times of the spring-applied brakes
t
1
Engagement time
t
11
Delay time during engagement
t
2
Disengagement time (up to M = 0.1 M
dyn
)
t
12
Rise time of the brake torque
M
dyn
Braking torque at a constant speed of rotation
U
Voltage
Size
Rated
torque
Max.
perm.
switch-
ing en-
ergy
Transitional
operating
frequency
Switching times
Max.
speed
Engaging
Disengaging
M
K
Q
E
S
hue
t
10
1)
t
90
1)
t
11.AC
2)
t
1.AC
2)
t
2ab
@s
LN
3)
t
2ab
@s
Lmax
3)
n
max
5)
[Nm]
[J]
[1/h]
[ms]
[ms]
[ms]
[ms]
[ms]
[ms]
[rpm]
25
2 x 800
240000
7.5
0.085 0.250
0.400
1.400
0.288
0.480
1150
2 x 1200
0.360
0.600
600
2 x 1500
0.068 0.181
0.330
1.155
0.240
0.400
Tab. 4:
Switching energy - operating frequency - switching times
1)
Switching times according to type examination certificate are based on the rated torque t
50
= (t
10
+ t
90
) / 2
2)
Switching times refer to steady braking torque.
3)
Venting times under unfavorable conditions (240 switching operations per hour, 60% DC, 40 °C ambient temperature)
4)
Brake supplied with overexcitation (release voltage / holding voltage = 2 / 1)
5)
Max. speed according to type examination certificate (for higher speeds, please first contact the manufacturer)
