User's Manual

DS720i Installation Guide
© 2000 Detection Systems, Inc. All rights reserved.
Page 3
3.3 Mirror Replacement
The DS720i comes with two mirrors: OA300 (pre-installed), and
OA90 (optional). The mirrors slide on and off the mirror stand. To
replace the mirror, use the following steps:
1) Hold the base with one hand if the unit has not been mounted.
2) Use the other hand to pull the mirror off the mirror stand in an
upward-diagonal direction.
3) Align the runners on the inside of the mirror with the grooves on
the mirror stand.
4) Slide the mirror onto the mirror stand in a downward-diagonal
direction.
See Figure 5 for details.
1 2 3 4 5 6 7 8
Mirror
Mirror Stand
Mounting
Groove
Pull mirror off in an
upward-diagonal
direction.
1 2 3 4 5 6 7 8
Mirror
Mirror Stand
Align mirror with
mirror groove
Slide mirror on in a
downward-diagonal
direction.
Figure 5: Replacing the DS720i Mirror
4.0 Wiring
Only apply power after all connections have been made
and inspected.
Wire the terminal strip as shown in Figure 6.
Alarm Relay Tamper
1 2 3 4 5 6 7 8 9 10
-
+
NC
C
NO
T T
TR
9-15 VDC
Input
TR
Trouble
Memory
Input
M
Alarm
Trouble
11
12
Spare
Spare
Figure 6: Wiring the DS720i Terminals
Terminals 1(–) & 2(+): Power limits are 9 to 15 VDC. Use no smaller
than #22 AWG (0.8 mm) wire pair between the unit and the power
source.
Terminals 3, 4, & 5: Alarm relay contacts rated 3 Watts, 125 mA, 28
VDC maximum for DC resistive loads and protected by a 4.7 ohm, 1/2
Watt resistor in the common "C" leg of the relay. Use terminals 3 & 4
for Normally Closed circuits. Do not use with capacitive or inductive
loads.
Terminals 6 & 7: Tamper contacts rated at 28 VDC, 125 mA.
Terminal 8 & 9: Terminals are normally closed when the detector is
not in trouble, and open when the detector is in trouble.
Terminal 10: Memory. Refer to Section 6.0 Feature Selection.
Terminals 11 & 12: Spare terminals.
Seal any openings with the foam plugs provided to
prevent drafts and insect entry. Use the (2) screws
provided to secure the detector cover to the base.
5.0 LED Operation
The DS720i uses three colors to indicate the various alarm and/or
supervision trouble conditions that can exist. Refer to Table 1 for the
colors and their respective conditions.
Table 1: LED Functions
LED Function
Steady Red Unit alarm or stored alarm
Steady Yellow Intrusion detected by microwave section
Steady Green Intrusion detected by PIR section
Flashing Red 1 Warm-up calibration period after initial power-up
Flashing Red 2 Motion Monitor time-out
Flashing Green 3 IR Anti-Mask failure
Flashing Yellow 3 Microwave Anti-Mask failure
Flashing Red 4 Microwave or PIR failure -- replace unit
Flashing (color) 2-4: The LED flashes 2-4 times a cycle.