Manual
VEK S4
12
03/09
FEIG ELECTRONIC GmbH
3 Starting
up
1.
Installation –
The installation rail must be grounded.
Æ
5 Case
and
7.5
PE connection
2.
Address –
The detector address is set to 48 at the factory using the address offset. All detectors which
will be operated on a common interface must be set to different addresses before the commissioning.
Æ
4.5.1
Device address
3.
RS485 bus terminator –
The RS485 interface must be terminated at the beginning and end in
accordance with the respective specification.
Æ
4.5.2
RS485 interface bus termination
4.
RS485 baud rate –
Select the correct baud rate for the host computer / laptop port. When delivered, the
baud rate for the RS485 interface is set to 9600 bps. If the baud rate of a detector is not known, this can
be reset to 9600 bps by restoring the factory settings.
Attention: All other parameters are also reset when the factory settings are restored.
5.
Loop assignment –
assign loops to the classification modules. The loops on the connections Loop1 /
Loop2 and Loop3 / Loop4 are assigned to the classification module 1 or the classification module 2
respectively.
6.
Loop scanning –
Adjacent loop should not operate in the same time window. It must already be
ensured during the planning that neighbouring loops not connected to the same detector are preferably
assigned to different channel numbers. Otherwise the multiplexing sequence must be changed over
during the commissioning.
Æ
1.5
Multiplexing methods
Æ
1.6
Synchronisation
Æ
2.2
Multiplexing sequence
7.
Frequency selection –
The loops of a detector are usually set to the same frequency band.
Neighbouring loops or loops from neighbouring detectors must be set to different frequency bands.
Æ
2.1
Frequency selection.
8.
Head gap –
The head gap must be set individually for each classification module. It is usually 400 cm for
TLS I loops and 250 cm for TLS II loops.
9.
Amplitude factor –
The amplitude factor must be set individually for each classification module. The
displayed out of tune maximum must be checked and corrected using the amplitude factor.
If the S4 protocol is used, the out of tune maximum for TLS I loops for vans should be between 480 and
800 and between 275 and 420 for TLS II loops.
1
Factory settings of the amplitude factor:
Loop TLS type I
60
Loop TLS type II
100
Note:
The amplitude factor must be set and checked for every measuring cross section. It is crucial
for the quality of the vehicle classification.
10.
Loop length –
The loop length of the connected loops must be set for each classification module. The
loop length is usually 250 cm for TLS I loops and 100 cm for TLS II loops.
1
When using the downwards compatible VEK S3 protocol, the maximum for vans should be approx. 20
(+/-5) for TLS I loops and approx. 11 (+/-3) for TLS II loops.
