Diablo C915 photoedge doc. S15
Forematic
9 Vanalloys Estate
Stoke Row
Henley RG9 5QW www.forematic.com QPS15-C915
C915 specification
Power
12/24V ac/dc
Range
10m
Dimensions
34 x 32 x 190mm
Rx light
38mA@24V 22mA @ 12V
Rx dark
26mA @ 24V 8mA @ 12V
TX current
38mA @ 24V 50mA@ 12V
Wavelength
950nm
Modulation
1.33kHz
Relay
1A @ 24Vac SPCO
IP rating
IP54
Photo-
beam
Rx
NC
NA
C
-
+
Photo-
beam
Tx
+
-
Infrared beam
C915 using N/C
contacts for safety.
Power
supply
N/C
contact
Connections
Relay contacts are volt free. Relay response time is
suitable for being driven from a Cat.2 switched power
supply. C915 runs from 12V or 24V. Insert the jumper
for 12V operation. When running from a dc supply the
photobeam is polarity sensitive.
Functional description
C915 is an infrared photobeam for mounting on the bottom
edge of a roller shutter. The sprung loaded housing legs
begin to roll along the floor when the beam is within 60mm of
ground level. working from 12V or 24V ac/dc.
A LED on the Tx is lit all the time. The Rx LED is on when the
beam is uninterrupted. Neither are visible through the case,
but a sight hole can be made to allow the LED to be seen.
Installation
The housing legs are fixed to the back of the door hanging
downwards. Run a low voltage cable between the legs. Wire
a 4 core flexible or spiral cable from one leg to a terminal box
on the door guide. Be sure the cable does not snag over the
full travel of the door.
The PCBs can be withdrawn to make wiring easy. Terminals
take 22 awg wire or less (0.2mm²). It is a good precaution to
spray a conformal coating on the PCB before closing. WD40
also is a good insert repellent. Clip the covers on and secure
with the two screws provided.
NC NA C 12 / 24
ac dc
-- +
Rx
12 / 24
ac dc
+ --
Tx
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