EN
Magnetic loop detector
4
Copyright
©
2017 SOMFY ACTIVITES SA. All rights reserved.
5. DIAGNOSTICS
Symptoms
Possible causes
Solution
The VOLTAGE indi-
cator light is out
No input power supply
voltage.
Check the power supply
input wiring.
The DETECTION
indicator comes
on intermittently.
Limited connection in
the loop or the loop
power supply line.
Check the connections.
Tighten the screw terminals.
Check that no electrical
wires are damaged.
Detector being tested
for crosstalk with the
loop of an adjacent
detector.
Readjust the frequency. Set
the detector with the largest
loop to low frequency and
the detector with the small-
est loop to high frequency.
The DETECTION
indicator comes
on randomly.
Loop or loop power
supply line faulty.
Check the wiring.
Tighten the screw terminals.
Check that no electrical
wires are nipped or folded.
Check that the power supply
line is twisted.
Movement of the loop
in the ground.
Check if the surface of the
road is cracked near the
loop.
The faulty loop
indicator is
flashing.
The loop is too small
or short-circuited.
Check that there is no
short-circuit on the wiring in
the loop or the loop power
supply line. If there is no
short-circuit, the induction
is too small. More electri-
cal wire windings must be
added to the loop.
The faulty loop
indicator stays on.
The loop is too big or
in an open circuit.
Check that there is no elec-
trical continuity in the loop.
This could happen by using
a multimeter on the ohms
range (< 5 Ω).
If the loop is too big, try
to reduce the number of
windings.
6. TECHNICAL DATA
GENERAL SPECIFICATIONS
Power supply
11-26 Vac/dc
Power consumption
max. 95 mA
Presence/pulse relays
0.5 A / 220 VAC
Response time
Approx. 120 ms aer the vehicle
enters the loop
Detector tuning range
15 - 1500 uH
Protection
Isolating transformer with protection
against surge protection
Connector
11 connector pins at the rear of the
unit
Dimensions (height x width x depth
in mm)
80 x 40 x 79
Operating temperature
- 40°C / + 85°C
