PEM300D
V. 02 – 27/11/2013
7
©Velleman nv
3 Beam is reflected on another
object and sent into the
receiver.
Remove the reflecting object or
change the beam direction.
4 The 2 beams are not broken
simultaneously.
Adjust beam direction so they're
broken simultaneously.
5 The beam interruption time is
shorter than the delay time.
Set a shorter delay time
Alarm LED lights up continuously
Possible cause
Solution
1 Deregulated alignment.
Realign the units.
2 Object between the 2 units.
Remove object or relocate units.
3 Unit sensors are dirty.
Clean the sensors with a soft cloth.
Intermittent false alarm signals
Possible cause
Solution
1 Bad wiring.
Check and repair wiring.
2 Unstable power supply.
Stabilize power supply.
3 Object between the 2 units.
Remove object or relocate units.
4 Electronic noise source nearby.
Remove noise source or relocate units.
5 Unstable installation of units.
Stabilize installation location.
6 Unit sensors are dirty.
Clean the sensors with a soft cloth.
7 Deregulated alignment.
Realign the units.
8 Small animals pass by.
Set a longer delay time.
9.
Technical Specifications
power supply
10 - 30V DC (not incl.)
detection system
simultaneous breaking of 2 IR-beams
response time
50 ms - 700 ms (variable)
alarm output
NC/NO 1A / 120 Vac
tamper output
NC 1A / 120 Vac
LED indicators
- 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
wavelength
650 nm
laser output power
max. 5 mW
