3-44
PFC-6800 • 5403602 • Rev B • 2/13
SLC Circuit Wiring
The SLC terminals are located in the lower right portion of the circuit board. Refer to the illustration below for an example of the
circuit wiring.
Example of SLC-127 Terminals Wiring
Figure 56.
SLC OUT SLC RET
-
+ -
+
SLC
wiring to
SLC
devices
SLC
Return
wiring
(Class-A
only)
Notes:
The voltage range for the SLC is 22-24 vDC.
1.
The power is a constant regulated connection.
2.
Maximum wire resistance is 50 ohms.
3.
The maximum fully loaded loop current is 56.055 mA.
4.
The impedance to ground for ground fault detection is 0 ohms.
5.
The SLC has a maximum loop capacitance of 0.5 micro-farads.
6.
SLCE Wiring Configurations
The SLCe's may be configured and installed as a Class A, Style 6 or 7 or Class B, Style 4. Please refer to the following examples:
Example of SLCE-127 Class A Style 7 Wiring
Figure 57.
Address No.
Potter Electric Signal Company
FIRE ALARM EQUIP
MENT
XX
XX
Address No.
Potter Electric Signal Company
FIRE ALARM EQUIP
MENT
XX
XX
24- 24+ S- S+
B- B+ A- A+
Conventional Initiating Zone Module
Model No. CIZM-4
Ser. No. xxxxxx
Document: TN51313e date:XX.XX.2009
Compatibility Identifier: INTE01
WARNING :
Power supply for terminals 24+ and 24- must
be power limited
All Terminals are power limited.
S- S+
Z2
C2
Z1
C1
NO2
(NC2)
NO1
(NC1)
Dual Contact Module
Model No. DCM-4
Ser. No. xxxxxx
Document: TN51316e date:XX.XX.2009
WARNING :
All Terminals are power limited.
SIGNALING
LISTED
L
U
SIGNALING
LISTED
L
U
SLCE Loop (Class A Style 7)
Terminal Connections
5.1kΩ
5.1kΩ
5.1kΩ
Address No.
Potter Electric Signal Company
FIRE ALARM EQUIP
MENT
XX
XX
S-1 S+1
Short Circuit Isolater
Model No. SCI
Ser. No. xxxxxx
Document: TN51313e date:XX.XX.2009
WARNING :
All Terminals are power limited.
SIGNALING
LISTED
L
U
S-2 S+2
Address No.
Potter Electric Signal Company
FIRE ALARM EQUIP
MENT
XX
XX
S-1 S+1
Short Circuit Isolater
Model No. SCI
Ser. No. xxxxxx
Document: TN51313e date:XX.XX.2009
WARNING :
All Terminals are power limited.
SIGNALING
LISTED
L
U
S-2 S+2
Address No.
Potter Electric Signal Company
FIRE ALARM EQUIP
MENT
XX
XX
S-1 S+1
Short Circuit Isolater
Model No. SCI
Ser. No. xxxxxx
Document: TN51313e date:XX.XX.2009
WARNING :
All Terminals are power limited.
SIGNALING
LISTED
L
U
S-2 S+2
Address No.
Potter Electric Signal Company
FIRE ALARM EQUIP
MENT
XX
XX
S-1 S+1
Short Circuit Isolater
Model No. SCI
Ser. No. xxxxxx
Document: TN51313e date:XX.XX.2009
WARNING :
All Terminals are power limited.
SIGNALING
LISTED
L
U
S-2 S+2
SCI
SCI
SCI
SCI
DWG #610-3
DWG #602-15
