Document: LT0273 MX4428 MXP Engineering / Technical Manual
Device Information and Programming
Issue 1.5 24 March 2006 Page 3-41
DIM800 DETECTOR
INPUT MONITOR
L+ L+L- L-
NEXT
DEVICE
PREVIOUS
DEVICE
NALOG LOOP
ANALOG LOOP
A+ A- B+ B-
+24V
COM
EXT
PSU
+
-
4k7 EOL4k7 EOL
Conventional
Detectors
(refer appropriate
wiring diagrams)
Refer text for
voltage
requirement
Unused inputs (A or B) must be
terminated with 4k7 EOL.
Figure 3.6 DIM800 Field Wiring
3.20.2 DIM800 SPECIFICATIONS
Dimensions Height: 61mm Width: 84mm Depth: 25mm
Weight 100g
Line Connections L-, L+
Loop Supply Voltage 20V – 40V
Loop Supply Current Standby/Alarm Loop Current : 100uA (typical)
EOL 4k7 + / - 1%.
Detector Load 3.0mA max per circuit
External Current (normal) 7.5mA (excluding detectors)
External Current (shorted) 30 - 50mA (depends on supply voltage)
External Supply Voltage Refer to
Table 3-4 for each detector.
Maximum Line Resistance 50Ω (with detectors)
1750Ω (with hard contacts only)
Short Circuit Fault Option Maximum line resistance 34Ω
Minimum Detector Alarm Voltage 5.0V
