FAAC DP2 Manual De Instrucciones página 4

DP2
2-channel detector
plug-in induction loop detector
Operating instructions
Please read the
instructions thoroughly before putting the
traffic detector into operation!
1 General
Characteristic features:
The induction loop detector DP2 is a system for inductive
detection of vehicles with the following characteristic features:
• evaluation of loops
• galvanic separation between loop and detector electronics
• automatic system alignment immediately after activation
• continuous resetting of frequency drifts
• no mutual influence of loop 1 and 2 by multiplex processes
• sensitivity is independent of loop inductivity
• occupied-message on LED-display
• open-collector outputs
• indication of loop frequency via LED
Service
LED green
Channel2
LED red
8 Frequency
7 Holding time Channel2
6 Sensitivity b
5 Sensitivity a
4 Frequency
3 Holding time Channel1
2 Sensitivity b
1 Sensitivity a
LED green
Channel 1
LED red
operating and safety
2 Possibilities of adjustment
2.1 Sensitivity
By adjusting the sensitivity, you determine a change of inductivity
for each channel, which a vehicle has to cause in order to set the
appropriate output of the detector.
Sensitivity adjustment is done separately for each channel with
the help of 2 DIP-switches.
Sensitivity level
(0,27% ∆f/f)
1 low
(0,09% ∆f/f)
2
(0,03% ∆f/f)
3
(0,01% ∆f/f)
4 high
2.2 Holding time
The holding time can be adjusted with the help of DIP-switches 3
and 7. After the holding time has expired, a "loop free" signal is
emitted, followed by an automatic rebalancing of the loops. The
holding time starts as soon as the loop is seized.
Holding time
5 minutes
infinite
2.3 Frequency adjustment and rebalancing
The actual frequency of the detector can be adjusted in two
levels with the help of DIP- switches 4 and 8.
Frequency
low
high
The admissible frequency range is 30kHz to 130kHz. The
frequency depends on the loop geometry, number of turns,
inductivity resulting from the loop supply line and the chosen
frequency level.
A rebalancing can be manually triggered by changing the
frequency adjustment of a channel.
As soon as switched on, the detector automatically carries out an
adjustment of the loop frequency. In case of a short-term voltage
loss of <0,1s no rebalancing will take place.
3 Connections
Connection
X1 / 1
X1 / 2
X1 / 3
X1 / 4
X1 / 5
X2 / 1
X2 / 2
X2 / 3
X2 / 4
X2 / 5
3
Channel 1: DIP-switch 1, 2
Channel 2: DIP-switch 5, 6
ON
8 OFF/OFF
1
ON
ON/OFF
1 8
ON
OFF/ON
1 8
ON
ON/ON
1 8
Channel 1: DIP-switch 3
Channel 2: DIP-switch 7
ON
OFF
1 8
ON
ON
1 8
Channel 1: DIP-switch 4
Channel 2: DIP-switch 8
ON
1 OFF
8
ON
ON
1 8
Type
Supply GND (PE)
Supply 24V DC
Open-Collector GND
Open-Coll. output Channel 2
Open-Coll. output Channel 1
Loop 2a
Loop 2b
---
Loop 1a
Loop 1b