Technical Specifications - Velleman PEM300D Mode D'emploi

3 Beam is reflected on another
object and sent into the
receiver.
4 The 2 beams are not broken
simultaneously.
5 The beam interruption time is
shorter than the delay time.
Alarm LED lights up continuously
Possible cause
1 Deregulated alignment.
2 Object between the 2 units.
3 Unit sensors are dirty.
Intermittent false alarm signals
Possible cause
1 Bad wiring.
2 Unstable power supply.
3 Object between the 2 units.
4 Electronic noise source nearby.
5 Unstable installation of units.
6 Unit sensors are dirty.
7 Deregulated alignment.
8 Small animals pass by.

9. Technical Specifications

power supply
detection system
response time
alarm output
tamper output
LED indicators
wavelength
laser output power
V. 02 – 27/11/2013
PEM300D
Remove the reflecting object or
change the beam direction.
Adjust beam direction so they're
broken simultaneously.
Set a shorter delay time
Solution
Realign the units.
Remove object or relocate units.
Clean the sensors with a soft cloth.
Solution
Check and repair wiring.
Stabilize power supply.
Remove object or relocate units.
Remove noise source or relocate units.
Stabilize installation location.
Clean the sensors with a soft cloth.
Realign the units.
Set a longer delay time.
10 - 30V DC (not incl.)
simultaneous breaking of 2 IR-beams
50 ms - 700 ms (variable)
NC/NO 1A / 120 Vac
NC 1A / 120 Vac
- alarm LED (receiver):
red LED on - when transmitter and receiver are not
aligned or when beam is broken
- signal LED (receiver):
yellow LED on - when receiver's signal is weak or
when beam is broken
- power LED (transmitter & receiver):
green LED on - indicates that device is ON
650 nm
max. 5 mW
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