Fig. 3 X12 Wiring - Pmc Sr6 As Sink For Interface Type C - Pilz Intern PMC SR6 Manual

Connection
X12 wiring
The two-channel design of the PMC SR6 with shared potential reference supports various options for
connection. These depend upon whether PMC SR6 is used via contacts or as a sink for interface type
C or D from the ZVEI interface classification.
Subsequent graphics visualize the activation options using corresponding switch contacts. Activation
via the semiconductor outputs with test pulses is also permitted.
24 V
DC
0 V
Fig. 3: X12 wiring – PMC SR6 as sink for interface type C
Both STO
permanently wired.
In the event of circuits with contacts, errors in the connection wiring can be detected only in some
cases. Short circuits to GND from STO
protection; they remain undetected with 24 V
determined only by line or output tests.
Redundant wiring in accordance with interface type C detects short circuits and cross circuits in the
connection wiring.
Manual PMC SR6 safety module
1005344-en-US-01
Intern
PLC
Input
X12 1 2 3 4 5 6 7 8
STO
Drive controller
and STO inputs are connected by two discrete channels; the GND reference potential is
a b
and STO are identified with the aid of upstream fuse
a b
. Possible short circuits and cross circuits can be
DC
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