Festo — CMMT-AS-...-S1 — 2021-04d
Installation
25
5.3
SBC installation
Inputs and outputs for the safety sub-function SBC
The 2-channel request for the safety sub-function is made via the digital inputs #SBC-A and #SBC-B at
the connection [X1A]. The SBA diagnostic output indicates whether the safe status has been reached
for the safety sub-function SBC. The holding brake is connected via the connection [X6B]. The external
clamping unit is connected via the connection [X1C].
Connection Pin
Type
Identifier
Function
[X1A]
X1A.9
DIN
#SBC-B
Safe brake control, channel B
X1A.10
#SBC-A
Safe brake control, channel A
X1A.21
DOUT
SBA
Safe brake control acknowledge
[X1C]
X1C.1
DOUT
BR-EXT
Output for connection of an external clamping
unit (high-side switch)
X1C.5
GND
Reference potential (ground)
[X6B]
X6B.1
–
FE
Functional earth connected to protective earth
X6B.2
OUT
BR+
Holding brake (positive potential)
X6B.3
BR–
Holding brake (negative potential)
Tab. 9: Inputs and outputs for the SBC safety sub-function
SBC connection example
The safety sub-function SBC (safe brake control) is triggered by an input device that makes the safety
request.
