Operating Instructions – Safety-Related BST Brake Module
35
10
Safety-related control voltage
Technical Data
10.2
Safety-related control voltage
The following table shows the technical data for safety-related control voltage V
24 V safe
at terminals 5/6:
10.3
Safety characteristics of BST brake modules
Safety-related control voltage V
24 V safe
Min.
Typical
Max.
Input voltage range
according to DIN EN 61131-2 DC 24 V
DC 20.4 V
DC 24 V
DC 28.8 V
Input current
50 mA
Input capacitance
4.7
μ
F
6
μ
F
Switch-on/switch-off threshold
DC 10 V
Input voltage for OFF state
(brake de-energized)
DC 6 V
Duration from switching off the safety-related control
voltage at BST until switching off the brake voltage V
B
plus the brake application time of the connected
brake.
1)
1) The brake application time for cut-off in the AC circuit must be used.
6 ms
Safety-related control cable
•
Cable length
100 m
(328 ft)
•
Cable cross section
0.5 mm
2
(AWG 20)
1.5 mm
2
(AWG 16)
Characteristic values to EN ISO 13849-1
Classification/underlying standards
PL d
System structure
Category 3
Probability of dangerous failure per
hour (PFH value)
0 (fault exclusion)
Mission time / service life
20 years
Safe condition
Brake de-energized
Safety function
SBC (safe brake control) according to IEC 61800-5-2
P
i
f
kVA
Hz
n
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