Vega VEGATOR 131, Руководство по эксплуатации

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6 Setup
VEGATOR 131 •
46836-EN-191010
For Ex applications, the 220 kΩ resistor must be approved together
with the sensor. For this purpose, we offer an approved resistor spe -
cially adapted to VEGA instruments. You can find further information in
the documentation of the respective sensor.
Fig. 4: Ex resistor for line monitoring with sensors of the EL series
Note:
Line monitoring may only be activated if a 220 kΩ resistor is con -
nected between the two electrodes.
With these switches you can delay the changeover of the relays by
the set time. This can be useful, e.g. with fluctuating product surfaces,
for preventing unwanted switching commands. The switch-on/off
delays can be set independently of each other. If both switches, e.g.
of the switch-on delay, are activated, the times sum up. Delays of 2, 6
or 8 seconds can thus be adjusted.
If several instruments are to be connected to the same electrodes,
then all VEGATOR 131 must be connected together via terminal 3.
One instrument must be configured as Master, all others as Slave.
Through synchronization of the measurement voltages, faulty switch -
ing due to crossover of measuring currents is avoided.
A second relay can be ordered as an option for VEGATOR 131. The
function of the second relay is determined via this DIL switch. It can
be configured as fail safe relay or as second level relay. When config -
ured as level relay, the switching behaviour is identical to relay 1. If the
instrument is WHG approved, then both relays can be used as WHG
relay.
With the potentiometer the switching point can be adapted to the
conductivity of the medium. The further description can be found in
the following chapter, depending on the operating mode.
6.3 Switch point adjustment with conductive
sensor
When using a conductive level sensor, the switching point is deter-
mined by the mounting position or the length of the electrodes. The
Switch-on/Switch-off
delay
Master/Slave switchover
Function relay 2 (op-
tional)
Switching point adjust-
ment, limit level