Bosch Ds939 User manual

DS939 Ceiling Mount

PIR Intrusion Detector

1.0 Specifications

• Dimensions 3.5 in. x 7 in. (8.9 cm x 17.8 cm)

(HxDia):

•Coverage: 360° by 70 ft. (21 m) diameter coverage when

mounted on 12 to 25 ft. (3.7 to 7.6 m) high ceilings. A

coverage area of 40 ft. (12 m) is available when

mounted at 8 ft. (2.4 m) and a coverage of 50 ft.

(15 m) is available when mounted at 10 ft. (3 m). The

pattern consists of 69 zones grouped into 21 barriers.

Each barrier is 35 ft. (10.7 m) long and 5 ft. (1.5 m)

wide at 35 ft. (10.7 m). The barriers are divided into 3

groups of 7 barriers, each of which has a vertical

adjustment for custom coverage.

•Input 9.0 to 15.0 VDC; 22 mA standby, 39 mA in alarm with

Power: LEDs enabled. Use only a Listed Limited Power

Source.

•Standby There is no internal standby battery. 22 mAh is

Power: required for each hour of standby time needed.

For UL

Listed Requirements, four hours of standby current

(88 mAh) is required.

Standby power must be

provided by a Listed Limited Power Source.

• Sensitivity: Low/High settings.

•Alarm Silent-operating Form “C” relay. Contacts rated 125

Relay: mA, 28 VDC, 3 watts maximum for DC resistive loads.

The contacts transfer on alarm for a period of 4

seconds. Some countries require the relay to be

connected to a SELV (Safety Extra-Low Voltage)

circuit only. Do not use with capacitive or inductive

loads.

•Tamper: Normally Closed (with cover in place) tamper switch.

A wall (base) tamper is included. Contacts rated at 28

VDC, 125 mA, 3 watts maximum. Some countries

require the switch to be connected to a SELV (Safety

Extra-Low Voltage) circuit only. Connect tamper circuit

to a 24-hour protection circuit.

•Temperature The storage and operating range is -40° to +120°F

Range: (-40° to +49°C).

For UL Listed Requirements, the

range is +32° to +120°F (0° to +49°C).

• US Patent This detector is protected by one or more of the

Numbers: following: #4,764,755. Other patents pending.

•Compliance: This device complies with Part 15 of the FCC Rules

and with RSS-210 of Industry and Science Canada.

Operation is subject to the following two conditions:

(1) this device may not cause harmful interference,

and

(2) this device must accept any interference

received, including interference that may cause

undesirable operation.

Changes or modifications not expressly approved by

Bosch Security Systems can void the user’s authority

to operate the equipment.

2.0 Installation Considerations

•Never install the detector in an environment that causes an alarm

condition. Good installations start with the LED OFF when there is no

target motion. It should never be left to operate with the LED in a

constant or intermittent alarm (red) condition.

• Avoid installations where rotating machines (e.g. ceiling fans) are

normally in operation within the coverage pattern. Point the unit away

from glass exposed to the outdoors and objects that may change

temperature rapidly.

Note: The PIR detector will react to objects rapidly changing temperature

within its field-of-view.

• For optimum detection, select a location likely to intercept an intruder

moving

across

the coverage pattern.

3.0 Mounting

• Recommended mounting height range is 12 to 25 feet (3.7 to 7.6 m). A

coverage area of 40-70 ft. (12.2-21.3 m) is available when mounted

between 8-12 ft. (2.4-3.7 m).

• The surface should be solid and vibration-free. (i.e. drop tiles should be

secured if the area above the tiles is used as an air return for HVAC

systems).

• To open the detector, locate the arrow on the cover of the detector .

Turn a screwdriver in the recess between the cover and the base .

One side of the cover will remain attached to the base of the detector.

• If necessary, you may remove the base from the cover by pressing the

two cover release tabs inward while lifting the base away from the

cover.

• Route wiring as necessary to the rear of the base and through the center

hole.

Note: Be sure all wiring is de-energized before routing.

• Firmly mount the base. Depending on local regulations, the base may

be directly surface mounted using anchors, mollies, or wing-nuts. It may

also be mounted to standard 3.5 in. octagonal electrical box. The

detector may also be connected directly to short lengths (short enough

to avoid movement of the detector) of ½ in. (1.27 cm) EMT.

Hint: Mounting to removable ceiling tiles is not recommended unless a

sandwich is made of the base, ceiling tile, and a back plate behind

the tile.

Mounting Base

Wire entrance and/or EMT Mounting.

Mounting holes.

Tamper Post.

Wire entrance for surface mounting.

Holes for cable ties.

Note: Using the curved mounting slots allows the detector to be

rotated up to 60° to obtain the desired coverage.

• If ceiling tamper is desired, loosen the tamper post by cutting the 3 tabs

and mount the post to the ceiling using a #8 screw .

5.0 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 a Listed Limited Power Source. Some

countries require that the Alarm and Tamper Contacts be

connected to a SELV (Safety Extra-Low Voltage) circuit only.

-+NO CNC TTM

ALARM TAMPER

POWER

•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 (NO), 4 (C), & 5 (NC): Alarm relay contacts rated 125 mA,

28 VDC maximum for DC resistive loads. Use terminals 4 & 5 for

Normally Closed circuits. Do not use with capacitive or inductive loads.

•Terminals 6 (T) & 7 (T): Normally Closed tamper contacts rated at 28

VDC, 125 mA.

•Terminal 8 (M): The memory mode requires a supply voltage on

Terminal 8 to be activated. See Section 8.1 for operation and wiring

information.

6.0 LED Operation

The detector uses a red LED to indicate the various alarm and supervision

conditions that may exist. See chart below.

LED Cause

Steady red Unit alarm

Flashing red Warmup period after power-up

7.0 Feature Selection

HIGH

LOW

OFF

PIR Signal

Gain

7.1 PIR Sensitivity Selection Pins

For selection, place the plug across the appropriate pins. No jumper across

the "HIGH/LOW" pins puts the detector in a "High" setting.

•Low Sensitivity (LO): The recommended setting for most installations.

This setting tolerates environment extremes. The detector is shipped

in Low Sensitivity mode.

•High Sensitivity (HI): Use in locations where adequate catch

performance is not achieved in the Low Sensitivity mode. This setting

tolerates only minor environmental changes.

7.2 LED On/Off Pins

The ON position allows operation of the LED. If LED indication is not desired

after setup and walk tests are completed, place in the OFF position. No

jumper across the "ON/OFF" pins disables the LED.

• Walk test the unit from all directions to determine all the detection

pattern boundaries.

Note: Wait at least 2 minutes after power up before walk testing.

8.0 Other Information

8.1 Memory, Day Mode, Night Mode and Remote Walk

Test

Note: Memory, Night Mode and Remote Walk Test require a supply

voltage on Terminal 8 to activate these features. This supply

voltage must be between 6 and 18 VDC. You may use a switch as

shown below:

Or use an external power supply as shown below:

Note: Control voltage: +6 to +18 VDC = ON (Switch Closed)

0 VDC = OFF (Switch Open)

• Day Mode: The Day Mode disables the alarm memory and allows the

LED (if activated) to operate normally.

• Memory: When the DS939 is in the Night Mode the memory is

activated. This allows the detector to store an alarm for display at a

later time.

Note: Memory mode requires that the LED jumper be in the ON position.

• Night Mode: The Night Mode enables the alarm memory and disables

the LED operation.

• Remote Walk Test: This feature allows the LED operation to be

remotely enabled via Terminal M for walk testing. This feature is used

when the LED operation is disabled by having the LED jumper in the

OFF position.

Desired Action Control Voltage (Terminal M) LED Jumper

Turn ON Night Mode ON (for more than 20 seconds) ON

Turn OFF Night Mode/

Display Stored Alarm OFF (from Night Mode) ON

To RESET Stored Alarm ON (for more than 5 seconds or

enter Night Mode) ON

Turn ON Remote Walk Test

(if OFF) ON (for more than 5 seconds but

less than 20 seconds) OFF

Turn OFF Remote Walk Test

(if ON) ON (for more than 1 second but

Less than 20 seconds) OFF

8.2 Anti-Vandal Screw

• After the cover has been closed, the entire assembly can be secured

together using the supplied anti-vandal screw .

8.3 Maintenance

At least once a year, the range and coverage should be verified. To ensure

continual daily operation, the end user should be instructed to walk through

the far end of the coverage pattern. This ensures an alarm output prior to

arming the system.

9.0 Coverage Pattern

5101520253035 0 5 10 15 20 25 30 35

1.5

3.0

4.6

6.1

7.6

9.1

10.7

1.5

3.0

4.6

6.1

7.6

9.1

10.7

0 1.5 3.0 4.6 6.1 7.6 9.1 10.71.53.04.66.17.69.110.7

Feet

Meters

Feet

Meters

1.5

3.0

4.6

0 5 10 15 20 25 30 35

0 1.5 3.0 4.6 6.1 7.6 9.1 10.7

Coverage shown at 12 ft. (3.7 m) mounting height.

10.0 Coverage Pattern Masking

The DS939 is provided with a set of masks to allow masking undesired

areas. The masking kit contains two 120° and two 90° masks. The masks

are designed to go on the outside of the detector. Do not attempt to open

the detector to place the masks on the inside.

With the supplied masks, you can mask 90°, 120°, 180°, 210° 240° or 330°.

Some examples are shown below.

Masking 120° Masking 180°

120° Mask 90° Mask

Coverage with 120° masked

Coverage with 180° masked

Coverage with 240° masked Coverage with 210° maskedCoverage with 90° masked

130 Perinton Parkway, Fairport, New York, USA 14450-9199 DS939 Installation Instructions

Customer Service: (800) 289-0096; Technical Support: (888) 886-6189 P/N: 48782E 12/03

-+NO C NC T T M

MAX PIR Signal

Gain

12 ft.

(3.7 m)

20 ft.

(6.1 m) 35 ft.

(10.7 m)

11.0 Optical Module Adjustment

• The PIR zones of the DS939 are divided into three groups. Each of these 3 groups can be independently adjusted vertically to provide the best

coverage within a room.

Only two coverage patterns are shown for clarity. PIR vertical adjustment knobs

• Use the following chart to adjust the optical modules based on the mounting height of the detector. The range shown is the distance from the detector

to the outside edge of the coverage pattern.

Mounting Height

Feet (Meters)

Maximum

Range

Feet (Meters) 8 (2.4) 10 (3) 12 (3.7) 14 (4.3) 15 (4.6) 16 (4.9) 18 (5.5) 20 (6.1) 22 (6.7) 24 (7.3) 25 (7.6)

10 (3) C A

15 (4.6) G D A A

20 (6.1) I G D B A A

25 (7.6) IFEDCAA

30 (9.1) HFEECBA

35 (10.7) IGGFECBAA

• In installations where a targeted coverage is required for part of the area, the optical modules must be adjusted for the correct coverage. In the

example below, the detector is mounted 12 ft. (3.7 m) above the floor. The distance to one wall is 20 ft. (6.1 m) and 35 ft. (10.7 m) to the opposite wall.