28
en | Installation wiring
PRAESENSA
2021.12.21 | V0.15b | F.01U.402.882
Underwriters Laboratories Listing Document (ULLD)
Bosch Security Systems B.V.
3.3
System controller | PRA-SCL | PRA-SCM | PRA-SCS
3.3.1
Connections
Figure 3.1:
Rear view connections
Rear panel connections
Chassis ground
24 to 48 VDC input A‑B
24 - 48 V
Memory card
Network port 1‑5
1
Field connections
Connection
Field
wiring
Circuit class /
Ilimited
IMax
/ minimum AWG
Remarks
Chassis ground
-
-
-
24 to 48 VDC input A‑B
NO*
Class 2
power limited
Wiring: 30-14 AWG.
Network port 1‑5
NO*
Class 2
power limited
Class N
* Must stay within same room <20 ft and within metal conduit.
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