Digital Monitoring Products, Inc.
715 Loop Expander
715 LOOP EXPANDER
Description
The 715 Loop Expander allows you to increase the number of 12 VDC ungrounded loops available on DMP
command processor panels. The 715 provides an additional four Class B powered loops for connecting fire
alarm initiating and burglary type devices to the panel.
You can install the 715 on individual wire runs up to 500' from the panel using 22 gauge wire or up to 1000'
using 18 gauge wire.
Address Setting
The 715 Loop Expander uses two rotary switches labeled S1 and S2 to set the module's address. If you're
connecting the 715 to the panel's keypad data bus, use only the switch labeled S1.
To set the address, use a small slotted
screwdriver and gently turn the center arrow
on the switch clockwise to the number that
matches the keypad address. See Figure 2.
Each loop on the 715 Loop Expander can be
individually assigned to any active area in the
system.
Loop numbers restricted to device addresses: All loop numbers are preassigned to the device address
and cannot be changed. If device loops show open, verify the loops are correctly programmed.
Installation
3.3k
Ω
EOL Resistor
DMP Part # 309
alarm
circuit
alarm
circuit
alarm
circuit
alarm
circuit
3.3k
Ω
EOL
Resistor
DMP Part # 309
Note: Connect the red wire to the
panel's smoke detector power.
SMOKE DETECTOR POWER
SERIAL DATA IN
AUX. OUTPUT
AUX. GROUND
BELL AND SMOKE GROUND
BELL OUTPUT 10.5-15 VDC
EARTH GROUND (14 AWG)
SERIAL DATA OUT
Command Processor
Panel
Red
Yellow
Green
Black
Wire Harness
DMP Model WR-0012
Harness Color Code
To Panel
Loops
Red - Positive 12 VDC
Yellow - Transmit Data
Green - Receive Data
Black - Ground
White/Brown -
White/Red -
White/Orange -
White/Yellow -
Loop 1
Loop 2
Loop 3
Loop 4
1
0
2 3 4
5
6
78
9
1
0
2 3 4
5
6
78
9
Figure 1: Panel and device connections to the 715 Loop Expander
0 1
2
3
4
5
6
7
8
9
0 1
2
3
4
5
6
7
8
9
S2
S1
Figure 2: Set switches to match device address
Example:
Rotary switches on the 715
set for keypad address two.
LT-0162 (7/95)
Digital Monitoring Products
