Manual
VEK MNE1 / VEK MNE2
16
09/2015
FEIG ELECTRONIC GmbH
G
B
R
11.3 Frequency
The adjustment of the operating frequency avoids coupling effects.
Couplings may be caused by other sensors on adjacent loops or loop cables. Therefore, it is important
that two or more sensors with adjacent loops do not operate on the same loop frequency. In this case,
the minimum frequency spacing must be 10 kHz.
DIP
Description
OFF
Low
Low frequency (factory defaults)
ON
High
High frequency
None
Loop channel turned off
A flashing sequence displays the current operating frequency of the loops in kHz or it may be read out with
the service program Detector Tool. (see chapter 10.1)
It is recommended to adjust the loop of one sensor to the same frequency. The multiplexing method en-
sures that no coupling takes place between the loops of one sensor.
For loop whose inductance is outside of the recommended range (see Chapter 4), the available fre-
quency range may be limited.
Loop channels without permanently connected induction loops should be disabled in the service pro-
gram. Otherwise, it is automatically polled whether a valid induction loop has been connected. In the
worst cases, this can lead to influence on the intact loop channel.
11.4 Hold Time
On the sensor, it is possible to set separate hold times between 1 and 255 minutes for each channel. 0
Minutes correspond to infinite hold time. If the loop of a sensor channel is covered longer than the selected
hold time, the sensor channel performs the measurement again. The existing detuning of the loop channel is
cleared.
DIP
USB
Hold time
ON
0
Infinite hold time
1
1 Minute hold time
:
OFF
5
5 Minute hold time
(factory defaults)
:
255
255 Minute hold time
For example, vehicles that park on the loop may automatically be removed from the calculation after the
hold time has expired by adjusting the hold time.
In addition, proper adjustment of the selected hold time can avoid permanent tripping caused by faults.
