Fig. 2-79 2814 – Basic Functions, SBC (Safe Brake Control)
- 2814 -
Function diagram
87654321
DO: SERVO
SINAMICS S110
14.09.10 V04.04.00
Safety Integrated - Basic Functions, SBC (Safe Brake Control)
2 ms
Control Unit (Processor 1)
Power Module (Processor 2)
PM-IF
M
~
BR1*
BR2
BR_DIAG
BR1
BR2*
+24 V
BR1
BR2
1 = Transistor conductive
Upper gating control channel
Lower gating control channel
BR+
<1>
<1>
M
~
Safety Logic CU (P1)
(Implementation and
monitoring of brake control)
BR1
1
&
> 0
Safety enable p9801
Enable SBC p9802
Enable signals for SBC P2
Causes for "close brake"
From the STO
shutdown paths
[2810.6]
0 = STO_P1
0 = STO_P2
DIAG_U
DIAG_L
Safety fault
[2802.8]
1 = STOP A
&
&
Enable signals for SBC P1
> 0
Safety enable p9601
Enable SBC p9602
0 = "SBC selected"
F30630
"Incorrect safety brake control, P2"
1 = Fault, brake control
0 = "SBC requested"
0 = "SBC requested"
1 = "SBC enabled"
1
F07930 "Incorrect brake control"
F01630 "Incorrect safety brake control, P1"
1 = "Fault, brake control"
<1> Both transistors
conductive
--> 24 V on the brake
--> Brake opened
The BR+ and BR-
outputs are only
available for compact
drive units.
1 = "SBC enabled"
0 = "SBC selected"
Diagnostic signal
BR2*
1
1 = SBC
requested
r9872.4
[2804.5]
1
1 = SBC
requested
r9772.4
2804.2]
BR1*
BR_DIAG
Causes for "safely close brake"
From the STO
Shutdown paths
[2810.6]
0 = STO_P1
0 = STO_P2
DIAG_U
DIAG_L
Safety fault
[2802.8]
1 = STOP A
&
0 = Pulses
canceled
[2810.7]
BR_DIAG [2802.1]
M
BR-
1
0
2 ms
= 1
= 1
Close "normal" brake from the basic brake control [2701.8]
Close "normal" brake from the extennded brake control [2711.8]
0 = Pulses
cancelled
[2810.7]
fp_2814_98_eng.vsd
&
<2> Not if:
p9602 = p9802 = 0
and p1278 = 1
<2>
<2>
<2>
<2>
Safety Logic PM (P2)
(Implementation and
monitoring of brake control)
SBC: Safe Brake Control
(Sichere Bremsenansteuerung)
PM-IF: Power Module Interface
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