Installation and operational instructions for
ROBA
®
-servostop
®
Type 8982.00_01
Size 40
– 100
(B.8982.EN)
06/10/2022 GF
Chr. Mayr GmbH + Co. KG
Eichenstraße 1, D-87665 Mauerstetten
Phone: +49 8341 804-0, Fax: +49 8341 804-421
Page 17 of 27
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5.2.6
Switching Times
Diagram 1
Switching times for brake operation with overexcitation voltage
Key
M
Br
= Braking torque
M
L
= Load torque
t
1
= Connection time
t
11
= Response delay on connection
t
2
= Separation time
t
O
= Overexcitation time
U
N
= Coil nominal voltage/coil voltage
U
H
= Holding voltage
U
O
= Overexcitation voltage
(These values are mean values
referring to a nominal air gap „a“ on a cold brake)
Switching Times
Size
40
50
60
70
80
90
100
Connection time
DC-side switching
t
1
[ms]
15
15
15
20
20
30
30
AC-side switching
t
1
[ms]
65
65
65
80
90
150
150
Response delay on
connection
DC-side switching
t
11
[ms]
10
10
10
15
15
20
20
AC-side switching
t
11
[ms]
50
50
50
60
60
100
100
Separation time (release)
t
2
[ms]
25
25
35
50
70
70
70
Overexcitation time
t
O
[ms]
50
50
70
100
140
140
140
U
O
M
Br
0,1 x M
Br
M
L
t
11
t
1
t
2
t
O
U
M
t
t
U
H