Technical specifications
INTORQ | BA 14.0214 | 10/2019
19
Size
Rated
torque
Max. permiss-
ible switching
energy
Transitional
operating
frequency
Switching times
Max.
speed
DC-side engagement
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]
28R
2 x 720
180000
14
141
277
500
1490
402
750
600
28R
4)
2 x 1200
69
176
300
1050
298
500
500
Tab. 4:
Switching energy - operating frequency - operating times
1)
Operating/switching times, according to type examination certificate, are based on the rated torque. t
50
= (t
10
+ t
90
) / 2.
2)
Operating 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 over-excitation (release voltage / holding voltage = 2/1).
5)
Max. speed according to type examination certificate (for higher speeds, please first contact the manufacturer).
Engagement time
The transition from a brake-torque-free state to a holding-braking torque is not free of time lags.
For emergency braking, short engagement times for the brake are absolutely essential. The DC-side
switching in connection with a suitable spark suppressor must therefore be provided.
Engagement time for AC-side switching: The engagement time is significantly longer (approx. 5 times
longer).
NOTICE
Connect the spark suppressors in parallel to the contact. If this is not admissible for safety
reasons (e.g. with hoists and lifts), the spark suppressor can also be connected in parallel
to the brake coil.
¾
If the drive system is operated with a frequency inverter so that the brake will not be de-energized be-
fore the motor is at standstill, AC switching is also possible (not applicable to emergency braking).
¾
The specified engagement times are valid for DC switching with a spark suppressor.
– Circuit proposals: refer to DC switching at mains – fast engagement.
Notice
Spark suppressors are available for the rated voltages.
Disengagement time
The disengagement time is the same for DC-side and AC-side switching. The specified disengagement
times always refer to control using INTORQ rectifiers and rated voltage.
