Voltek 1821 User manual

This product has a 2 Year parts and labour warranty. In the unlikely event
that you encounter a problem with this product, it should be returned direct
to Voltek, or to the place of purchase.
Voltek Helpline: 09066 191 133*
WARRANTY
SPECIFICATION
Operating Voltage
Current Consumption
Relaytype
Relay Contact rating
Transistor Output
Transistor rating
Alarm duration
Dimensions
Total package weight
Approvals
12Vdc Nominal
33mA (standby)
40mA (alarm)
Single pole change over
1A (24V dc), 0.5A (120V ac)
npn with 22K pull up and 100R in series
80mA (sink only)
2 sec. To 5 min. (Relay)
2 sec. minimum (transistor)
80mmWx110mmHx115mmD
0.2Kg
CE Directive 93/68/EEC
EMC Directive 89/336/EEC
BS EN 50081-1, BS EN 50082-1
The 1821 is a Pulse Count Module that will fit into the wiring compartment of a
Securilite 1804 or 1811 PIR Sensor. It will provide additional security against false
alarms and / or provide an interface with your intruder alarm panel, CCTV equip-
ment, auto-dialler, pager etc. while still working with the Securilite lighting control-
lers.
FEATURES
• 12V dC operating voltage.
• Compatible with Securilite 1804 & 1811 or any PIR with a -ve signal output.
• Selectable pulse count 1, 2, 3 or 4.
• Adjustable Time Frame of 5, 10, 20 or 30 sec.
• Adjustable relay alarm time (2 sec. to 5 mins.)
• Normally open and normally closed relay output.
• Lighting controller output (-ve signal in alarm)
• Relay output will go into alarm on removal of power.
• Relay & transistor will go into alarm if the PIR input is disconnected.
Please note : when handling the pulse count module, care should be
taken to hold the board by the edges therefore avoiding touching the
electronic components or tracks.
1. Use the guidelines provided with the PIR sensor to choose the best
location for the sensor.
2. Remove the lid from the PIR sensor.
3. Remove the five wires from the connector and then connect them to
the Four way connector on the pulse count module as shown on the
next page.
Connectiondetails:
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Email: [email protected] Website: www.voltek.co.uk

9. If you are using this device with an 1804 single head sensor, push the PCB
onto the three posts to secure into position.
10. Note that the PIR LED can be disabled by disconnecting the white wire (Ensure that
the disconnected wire cannot touch any electronic components within the unit)
11. The pulse count module can now be connected to the peripheral equipment (e.g. CCTV
controller, radio pager, etc.) and a lighting controller if required. Use the following
table to record the wire colours used.
• The 1816 will ignore any PIR pulses that are shorter than 0.2 seconds therefore
stopping nuisance alarms from a bird flying closely to the sensor, or a bush or tree
moving.
• When the first pulse is received from the PIR, the Time Frame starts, indicated by the
green LED. The duration of the time frame can be altered using the jumpers as shown
above. The time frame can be reduced for particularly hostile environments, or
increased to improve sensitivity.
• If enough pulses are received while the time frame is on, the relay output and the
transistor output will switch on.
• The transistor output is a momentary type output, i.e. it will only stay on for as long as
movement is being detected (minimum 2 seconds).
• The relay output time can be adjusted between 2 seconds and 5 minutes using the
potentiometer. This is a resetable type timer, i.e. each time the correct number of
pulses are received from the PIR, the timer will restart.
12. The factory setting of the pulse count module is:
Pulses: 2
Time Frame - 10 seconds
Relay Timer: 2 second
This should be suitable for 90% of hostile environments, but if you wish to change
these settings, move the shorting pins on the PCB using the drawing on the previous
page for guidance.
• Please Note : A large source of RFI emitted close to this unit may cause the Pulse Count
Module to produce a false alarm.
1. Double check all your wiring and then screw the lid back onto the unit
2. Apply power to the system. When first powered, the sensor will take
approximately 1 minute to settle down into normal operation.
3. Walk in front of the sensor and ensure the detection area is being covered adequately.
Adjust the pan and tilt of the sensor to the desired position and use the screw on the
front of the enclosure to lock in position. (Do not overtighten as this may prevent you
from making changes in the future).
UNIT OPERATION
COMPLETING THE INSTALLATION