Page 2
© 2011 Bosch Security Systems, Inc.
DS835 Series Installation Instructions
4.0
Wiring
CAUTION
Only apply power after all connections have been
made and inspected. Do not coil excess wiring inside
detector.
NOTE:
Input power must use only an Approved Limited Power
Source. Alarm and Tamper Contacts to be connected to a
SELV (Safety Extra-Low Voltage) circuit only.
1
2
3
4
–
+
C
NC
Alarm
Relay
Alarm
5
6
7
8
SP T
SP
T
Tamper
9-15 VDC
Input
Tamper
•
Terminals 1 (–) & 2 (+):
Voltage limits are 9 to 15 VDC. Use no
smaller than #22 AWG (0.8 mm) wire pair between the detector and
the power source.
•
Terminals 3 & 4:
Alarm relay (reed) contacts rated 3 watts, 125 mA,
28 VDC maximum for DC resistive loads and protected by a 4.7 ohm,
½ watt resistor.
NOTE:
Do not use with capacitive or inductive loads.
•
Terminals 5 and 8:
Spare.
•
Terminals 6 & 7:
Tamper contacts rated at 28 VDC, 125 mA.
NOTE:
Plug the wire entrance hole with the foam plug provided after all
wiring connections have been made.
5.0
LED Operation
The detector uses a tricolor LED to indicate the various alarm and
supervision trouble conditions that may exist. See chart below.
LED
CAUSE
Steady red
Unit alarm
Steady yellow
Microwave activation (walk test)
Steady green
PIR activation (walk test)
Flashing red
Warm-up period after power-up
Flashing red (4 pulse sequence)
Replace Unit
If the detector experiences a Microwave or PIR self-
test failure, it is in need of replacement.
NOTE:
During walk testing, the LED will light for the first technology
(microwave or PIR) and then light red to indicate a detector
alarm. The LED will not indicate activation of the second
technology by lighting its color.
6.0
Feature Selection
6.1
LED On/Off Pins
The ON position allows operation of the tricolor LED. If LED indication
is not desired after setup and walk tests are completed, place in the
OFF position. The OFF position does not prevent the LED from
indicating supervision trouble conditions.
On
Off
6.2
PIR Sensitivity Selection Pins
For selection, place the plug across the pins marked STD for Standard
or INT for Intermediate mode.
INT
STD
Standard Sensitivity:
The recommended setting for maximum false
alarm immunity. Tolerates environmental extremes on this setting.
Required setting for Pet Immunity.
Intermediate Sensitivity:
The recommended setting for
non-pet
applications where an intruder is expected to cover only a small portion
of the protected area. Tolerates normal environments on this setting.
This setting will improve your intruder catch performance.
7.0
Setup and Walk Tests
Select the vertical starting angle from this chart:
To adjust the vertical starting angle for the desired mounting height and
range, loosen the vertical adjust screw and slide the board up, to point
the angle down. Note the settings on the vertical adjust scale.
DS835
Range
Mounting
Height
20 ft.
(6 m)
35 ft. (10.7
m)
6.5 ft. (2 m)
-9°
-5°
7.0 ft. (2.3 m)
-10°
-6°
8.0 ft. (2.4 m)
-10°
-7°
NOTE
:
The proper vertical angle must be selected for installations
containing pets. See Section 11.0
• Place the LED plug in the ON position and replace the cover.
7.1
Establishing PIR Pattern Coverage
• Turn the Microwave range adjust to minimum.
• Replace the cover and snap it into place. This will close the tamper
switch.
•
Wait two minutes minimum
after applying power to start walk tests.
NOTE
: During the warm-up period, the tricolor LED will flash red until
the unit has stabilized (approximately 1 to 2 minutes) and has
seen no movement for two seconds. When the tricolor LED
stops flashing, the detector is ready to be tested. With no motion
in the protection area, the tricolor LED should be OFF. If the
LED is on, recheck the protection area for disturbances
affecting the microwave or PIR technologies.
