VEGA VEGATOR 537 Ex - Manual (Page 12)

12 VEGATOR 537 Ex
23465-EN-030723
Min./Max. mode
The min./max. switch (12) is used for linking
both sensor inputs to one common min./max.
signal. With it, you can create a pump con-
trols system.
Setup
Output relay 2 cannot be used for pump
control. It has the following function:
Sensor uncovered – relay 2 energised,
Sensor covered – relay 2 deenergised.
Double point control
Measuring system for detection of two levels
(alternating function), e.g. pump control.
Mount the vibrating level switch at the re-
spective switching points
- at the respective level,
- as tube version, mounted with adjustable
locking screw connection,
- with tube extension of respective length
- suitable signal conditioning instruments (in
conjunction with oscillator SW E60Z, SW
E82Z/VIB E50Z) VEGATOR 537 Ex.
• Connect the sensor of the upper switching
point to sensor input 1, the sensor of the
lower switching point to sensor input 2.
• Set the A/B switch (switch 1) on the DIL
switches (13 and 14) of both sensor chan-
nels to position A (overfill protection/max.
detection).
• Depending on whether you want to connect
a filling or emptying pump, you must con-
nect the pump accordingly to output relay
1.
Mode Mode Mode Mode Mode T T T T Ter er er er erminals minals minals minals minals
Filling pump d10, b10
Emptying pump b10, z10
Switch
on off
Level
Time
off
on
off
Level
Time
2
1 1
1 Relay energised
2 Relay deenergised
Sensor 1 Sensor 1 Sensor 1 Sensor 1 Sensor 1 Sensor 2 Sensor 2 Sensor 2 Sensor 2 Sensor 2 Relay 1 Relay 1 Relay 1 Relay 1 Relay 1
(top) (top) (top) (top) (top) (bottom) (bottom) (bottom) (bottom) (bottom)
uncovered uncovered energised
covered covered deenergised
Fault monitoring
The measuring system is monitored continu-
ously. The following criteria are checked:
- line break or short circuit in two-wire cable
- interruption of the connection cable to the
piezoelectric elements
- corrosion or damage of the tuning fork
(vibrating rod)
- break of the tuning fork (vibrating rod)
- loss of vibration
- vibrating frequency too low
- corrosive medium in the sensor (penetrat-
ing from vessel interior)