Feig Electronic VEK M2E-2-B User manual

Operating instructions
Traffic detector
VEK M2E-2
FEIG ELECTRONIC GmbH Lange Straße 4 35781 Weilburg/Lahn

VEK M2E-2 Operating instructions
2 03/06 FEIG ELECTRONIC GmbH
©Copyright 1998 by FEIG ELECTRONIC GmbH
Lange Straße 4
D - 35781 Weilburg
The indications made in these operating instructions may be altered without previous notice.
With the edition of these instructions, all previous editions become void.
Composition of the information given in this manual has been done to the best of our
knowledge. FEIG ELECTRONIC does not guarantee the correctness of the details given in
these instructions and may not be held liable for damages ensuing from incorrect installation.
Since, despite all our efforts, errors may not be completely avoided, we are always grateful
for your useful tips.
The installation instructions given in this manual are based on advantageous boundary
conditions. FEIG ELECTRONIC does not give any guarantee promise for perfect function of
the appliance in a cross surrounding.
Copy or reproduction of these instructions, even if only partial, as well as translation into
other languages is forbidden unless a written consent has been granted by FEIG
ELECTRONIC. This also applies to the complete or partial storage of these operating
instructions on modern input- and output media for further processing in data processing
systems.
Please read the operating- and safety instructions thoroughly before putting the
appliance into operation !
Issue: 02.03.06 as
Bes-m2e_UK.doc

Operating instructions VEK M2E-2
FEIG ELECTRONIC GmbH 03/06 3
Contents
1. General............................................................................................................... 4
2. Adjustment possibilities ...................................................................................... 5
2.1. Sensitivity.............................................................................................. 5
2.2. Frequency............................................................................................. 5
2.3. Holding time.......................................................................................... 5
2.4. Output function...................................................................................... 6
2.4.1. Presence detection.................................................................. 6
2.4.2. Directional detection................................................................ 6
2.5. Readjustment (Reset)........................................................................... 8
3. Outputs and LED-display.................................................................................... 9
3.1. Working principle of the relays.............................................................. 9
3.2. Contact conditions of the relays............................................................ 9
3.3. Loop failure........................................................................................... 9
3.4. Diagnostic plug ..................................................................................... 10
3.5. LED-display........................................................................................... 10
3.6. Output of loop frequency....................................................................... 10
4. Technical data.................................................................................................... 11
5. Operating elements and connections................................................................. 12
6. Housing dimensions........................................................................................... 13
7. Installation and initiation..................................................................................... 13
8. Device categories............................................................................................... 14
8.1. Type VEK M2E-2 -B.............................................................................. 14
8.2. Type VEK M2E-2 -D ............................................................................. 14
8.3. Type VEK M2E-2 -E.............................................................................. 15
9. Safety instructions.............................................................................................. 17

VEK M2E-2 Operating instructions
4 03/06 FEIG ELECTRONIC GmbH
1. General
The induction loop detector is a system used for inductive vehicle detection.
Range of application:
•Barrier controls
•Door- and gate controls
•Parking- and traffic engineering
Characteristic features:
•evaluation of two loops
•galvanic separation of loop and detector electronics
•automatic system adjustment directly after switch-on
•continuous rebalancing of frequency drifts in order to avoid environmental influences
•suitable for individual job control
•no influence on loop 1 and loop 2 through multiplexing
•sensitivity adjustment independent of loop inductivity
•occupied-signal emitted by LED-display
•potential-free relay contacts as outputs
•Relay triggering may be converted from static current- to operating current principle by
switch operation.
•loop breach- or loop closing message via LED-signal
•indication of occurred and eliminated loop failures
•indication of base frequency by flash signals of the green LED
•diagnosis by external diagnostic device
•11-pole circular connector
Possibilities of adjustment:
•two frequency levels to be used by both channels
•four sensitivity levels per channel
•Holding time: 5 minutes or infinite for both channels
•presence- or directional detection
•permanent- or pulse signal for relay channel 2
•permanent direction signal or pulse direction signal l
Structural shape:
•Housing 76x38x71mm (HxWxL) with 11-pole circular connector, RAL 5005
•2 boards, 72x65mm each
For planning and installation of induction loops, please refer to our manual „vehicle detection
with the induction loop detector“.

Operating instructions VEK M2E-2
FEIG ELECTRONIC GmbH 03/06 5
2. Adjustment possibilities
2.1.Sensitivity
By adjusting the sensitivity for each channel, we determine, which change of inductivity a
vehicle has to cause in order to set the detector’s output.
Sensitivity adjustment is done separately for each channel in 4 levels and according to the
dual system, with 2 DIP-switches. Adjustment for channel 1 is done with DIP-switches 1and2
and for channel 2 with DIP-switches 3 and 4.
Sensitivity level Channel 1
DIP-switch 1 2 Channel 2 DIP-switch 3 4
1 low (0,64% ∆f/f) OFF OFF OFF OFF
2 (0,16% ∆f/f) ON OFF ON OFF
3 (0,04% ∆f/f) OFF ON OFF ON
4 high (0,01% ∆f/f) ON ON ON ON
2.2.Frequency
The detector’s working frequency may be selected in two common levels, to be used for both
channels. The admissible frequency range is 30kHz to 130kHz. The frequency depends on
the loop geometry, number of turns, loop supply line and the chosen switch position.
One common frequency may be adjusted for both channels with DIP-switch 5.
Frequency level DIP-switch
5
High ON
Low OFF
2.3.Holding time
The common holding time for both channels may be adjusted with DIP-switch 6.
Holding time DIP-switch position
6
5 minutes OFF
Infinite ON
After the holding time has expired, the "loop free" signal is indicated and the loops will be
automatically readjusted. The holding time of a detector channel starts with the assignment
of the respective loop.

VEK M2E-2 Operating instructions
6 03/06 FEIG ELECTRONIC GmbH
2.4.Output function
2.4.1. Presence detection
For the presence detection mode, you have to put DIP-switch 7 in "OFF" position. The
output signal for the relay at channel 2 is selected with the help of DIP-switch 8, while a
permanent signal is emitted at relay 1 for channel 1.
Output signal
channel 2 / relay 2 DIP-switch position 8
Permanent signal OFF
Pulse when vehicle leaves
loop 2 ON
2.4.2. Directional detection
(not for all types; see 8. Device categories)
If DIP-switch 7 is "ON", two directional logics will be supported in dependence on DIP-switch
8. The directional pulse is mainly used in counting devices, whereas the permanent direction
signal is used for requests in gate- and barrier control units.
In the following, we will explain the function of the directional logic, taking loops 1 and 2 with
direction of motion 1Æ2 as an example. The direction signal is emitted by the relay of the
loop that the vehicle crosses first. This means that the signal will be indicated by relay 1 if
the direction of motion is 1Æ2 .
a) Single vehicle
12
DIP-switch 8 "ON"
pulse signal DIP-switch 8 "OFF" permanent signal
Ð
12
Ð
12 Relay 1
Ædirectional pulse Relay 1 Æpermanent direction signal
'on'
Ð
12Relay 1
Æpermanent direction signal
'remains'
Ð
12 Relay 1
Æpermanent direction signal
'off'

Operating instructions VEK M2E-2
FEIG ELECTRONIC GmbH 03/06 7
b) Queue traffic
12
DIP-switch 8 "ON"
pulse signal DIP-switch 8 "OFF" permanent signal
Ð
12
Ð
12
Relay 1
Ædirectional pulse Relays 1 Æpermanent direction signal
'on'
Ð
12
Relay 1
Æpermanent direction signal
'remains'
Ð
1 2
Relay 1
Æpermanent direction signal
'remains'
Ð
12
Relay 1
Æpermanent direction signal
'off'
Ð
12
Relay 1
Ædirectional pulse Relay 1 Æpermanent direction signal
'on'
Ð
12
Relay 1
Æpermanent direction signal
'remains'
Ð
12
Relay 1
Æpermanent direction signal
'off'

VEK M2E-2 Operating instructions
8 03/06 FEIG ELECTRONIC GmbH
c) Vehicle rolling back
12
DIP-switch 8 "ON"
pulse signal DIP-switch 8 "OFF" permanent signal
Ð
12
Ð
12
Relay 1
Ædirectional pulse Relay 1 Æpermanent direction signal
'on'
Ð
12
Relay 1
Æpermanent direction signal
'off'
Ð
12
Relay 2
Ædirectional pulse
indicates vehicle is rolling back
The evaluation of the direction signal in opposite direction of motion is done in the same
way.
In case of a loop breach resp. closing, the system switches over to the presence detection
mode for the time of the failure. A permanent signal is now emitted by the relay of the intact
loop channel as soon as the loop is occupied.
2.5.Readjustment (Reset)
The detector automatically carries out a loop frequency adjustment as soon as the power
supply is switched on. In case of a short-term voltage loss <0,3s, no readjustment will be
carried out; conditions remain stored. A readjustment may be triggered manually by pressing
the reset key. If the loop frequency is stable, the adjustment time is approx. 1s. If the loop is
occupied during this adjustment phase, the adjustment time will be extended accordingly. In
case that the loop is permanently occupied during the adjustment process, the detector will
be readjusted as soon as the vehicle has left the loop. Due to this, the following vehicles will
again be detected. Longer adjustment times hint to an unstable loop frequency. The
loop/detector system has to be checked with regard to possible interferences.

Operating instructions VEK M2E-2
FEIG ELECTRONIC GmbH 03/06 9
3. Outputs and LED-display
3.1.Working principle of the relays
The detector has a potential-free relay contact at each output. The static current- or
operating current principle may be selected for each channel with the help of a slide switch.
Switch Position Working principle
1
2right Static current principle
(Relay coil falls off during signal output)
1
2left Operating current principle
(Relay coil attracts during signal output)
3.2. Contact conditions of the relays
(For device categories, please refer to chapter 8)
The following chart illustrates the relay’s condition depending on the selected relay working
principle and the detector condition.
Detector condition
Loop is free
Loop is occupied
Loop failure
Reset
Voltage off
3.3.Loop failure
In case of a loop failure, the relay of the disturbed channel changes into the „loop is
occupied“ condition. The green LED goes out. The red LED lights up.
After the fault has been eliminated, the detector channel keeps on working independently.
The green LED pulsates now, in order to hint to the fault which has occurred and already
been eliminated. This fault indicator is restored by pressing the reset key.

VEK M2E-2 Operating instructions
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3.4.Diagnostic plug
For an optimum adjustment of the detector, please connect diagnostic device VEK FG2.
Diagnostic device VEK FG2 indicates all relevant data for initiation and service. It provides
information on the loop/detector system, so that we may then optimise the adjustments as
well as localise the cause for malfunctions. For further information, please refer to the
operating instructions of diagnostic device VEK FG2.
Warning: please only plug in the diagnostic cable when the detector is idle !
3.5.LED-display
The green LED indicates that the detector channel is ready for operation and sends out
important hints regarding initiation of the detector (failure, adjustment, frequency output) via
flash signals. The red LED indicates activation of the relay output in dependence on the
availability condition of the loop.
Green LED
Loop control Red LED Loop condition Detector condition
Off off Reset or
Lack of supply voltage
Flashes off Adjustment
flashes after adjustment - Loop frequency output
On off Detector ready,
loop free
On on Detector ready,
loop occupied
Off on Loop failure
Pulsates off Loop free,
after temporary failure
Pulsates on Loop occupied,
after temporary failure
3.6. Loop frequency output
After the detector has been readjusted, the loop frequency is indicated by flash signals of the
green LED. Approx. 1s after the successful readjustment, the output starts with the 10kHz-
position of the frequency value. The green LED of the detector channel will flash 1 time per
10kHz loop frequency. After a 1s break, the 1kHz-position will be indicated in the same way.
In case that the units digit has the valency '0', 10 flash signals will be emitted. The duration
of the flash signals of the 1kHz-position is a little shorter than the one of the 10kHz- position.
Example of a 57kHz loop frequency:
5x 10kHz 7x 1kHz entspricht: 57kHz
1s
Zehner Einer
If both channels are adjusted at the same time, the frequency of channel 1 is indicated
before channel 2.