Connecting
4.7 Motor holding brake
SINAMICS V90, SIMOTICS S-1FL6
Operating Instructions, 04/2019, A5E36037884-007
169
Motor holding brake interface - drive side (for 400 V variant servo drive only)
Illustration
Signal
Description
B+
24 V, motor brake voltage positive
B-
0 V, motor brake voltage negative
Maximum conductor cross-section: 1.5 mm
2
Input voltage tolerance: 24 V ± 10%
Motor holding brake connector - motor side
Illustration
Pin No.
Signal
Description
Low inertia motor, shaft-height: 20 mm, 30 mm and 40 mm
1
Brake+
Phase Brake+
2
Brake-
Phase Brake-
Low inertia motor, shaft-height: 50 mm
High inertia motor, shaft-height: 45 mm, 65 mm, and 90 mm
Straight connectors:
Angular connectors:
1
Brake+
Phase Brake+
2
Brake-
Phase Brake-
Signal status
The following table describes the states of various interfaces and components when the
brake works.
●
200 V variant
Status
MBR (DO)
Brake control
(Brake)
Relay
Motor brake
function
Motor shaft
Brake en-
gagement
High level (1) Brake off
Without cur-
rent
Opened
Cannot run
Brake release Low level (0)
Brake on
With current
Closed
Can run
●
400 V variant
Status
MBR (DO)
Brake control
(B+, B-)
Motor brake func-
tion
Motor shaft
Brake engage-
ment
High level (1)
0 V
Opened
Cannot run
Brake release
Low level (0)
24 V
Closed
Can run
