GST-IFP4M Intelligent Fire Alarm Control Panel
Installation and Operation Manual
Page
28
between the batteries is not connected. Do not connect the interconnect cable until the
system is completely installed. Observe polarity when connecting the batteries. The FUSE
can be found in the accessories of panel.
2.5.3 Signaling Line Circuits (SLC) Connection
Each SLC includes four wires: O+ (bus output positive), O- (bus output negative), I+ (bus
input positive), and I- (bus input negative). The wire from O+ is connected back to I+ and
the wire from O- back to I-. SLC only has one connection of Class A.
When connecting with C-M9503/DC-M9503 Loop Isolator, each SLC can connect up to 50
Isolators. Maximum 30 detectors/MCPs/modules can be protected between two isolators.
The connection is shown below Fig 2.23
MAX 242 devices
Isolator
Detector
MCP
Isolator
Detector
MCP
Isolator
Isolator
MAX 30 devices
O+
O-
SLCx
I-
I+
Detector
MCP
Fig2.23
Fig2.23.1
When not connecting with C-M9503/DC-M9503 Loop Isolator, the connection of SLC is
shown below Fig 2.24
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