Vega VEGAKON 66 User manual

Level and Pressure
Operating Instructions
VEGAKON 66

2VEGAKON 66
Safety information
Safety information
Please read this manual carefully, and also take
note of country-specific installation standards
(e.g. the VDE regulations in Germany) as well as
all prevailing safety regulations and accident pre-
vention rules.
For safety and warranty reasons, any internal work
on the instruments, apart from that involved in
normal installation and electrical connection, must
be carried out only by qualified VEGA personnel.

VEGAKON 66 3
Contents
Safety information ........................................................................ 2
1 Product description
1.1 Function and configuration .................................................. 4
1.2 Types and version ............................................................... 4
1.3 Approvals ............................................................................. 4
1.4 Technical data ....................................................................... 5
1.5 Dimensions ........................................................................... 7
1.6 Type label ............................................................................. 7
2 Mounting
2.1 General instructions ............................................................. 8
2.2 Installation ............................................................................. 8
3 Electrical connection
3.1 Connection instructions ....................................................... 9
3.2 Connection, relay module.................................................... 9
3.3 Connection, transistor module .......................................... 10
4 Setup
4.1 Indicating and adjustment elements ................................ 12
4.2 Switching point adjustment ............................................... 12
4.3 Functions schedule ............................................................ 15
5 Diagnostics
5.1 Replacement of electronics ............................................... 16
5.2 Simulation of switching functions ...................................... 16
Contents

4VEGAKON 66
Product description
1 Product description
1.1 Function and configuration
VEGAKON 66 conductive compact level
switches detect levels of conductive liquids.
Depending on the sensor electronics (mod-
ule), a relay energises or deenergises or the
transistor output is conductive or blocks
(mode A or B) see "4.1 Indicating and adjust-
ment elements".
VEGAKON can be used for reliable detection of
products over a very wide conductivity and
viscosity range.
1.2 Types and version
Application
- single point control, double point control
Series
- compact instrument, with socket G 11/2A
Power supply
- with relay module
20 … 72 V DC
20 … 250 V AC, 50/60 Hz
- with transistor module
10 … 55 V DC
Output
- relay module DPDT or
- transistor module
General
• Selectable sensitivity - for adaptation to
product conductivity
• Dry adjustment possible
• A/B mode
• Adjustable integration time
• Level simulation
• Exchangeable sensor electronics
• Up to three electrode rods
1.3 Approvals
CE approval
VEGAKON 66 meet the protective regulations
of EMC (89/336/EWG) and NSR (73/23/EWG).
The conformity has been judged acc. to the
following standards:
EMC Emission EN 50 081 - 1
Susceptibility EN 50 082 - 2
NSR EN 61 010
Max.
Min.

VEGAKON 66 5
Product description
1.4 Technical data
Mechanical configuration
Housing
Housing material plastic PBTP (Polyester)
aluminium (plastic coated)
Protection
- plastic housing IP 66
- aluminium housing IP 66/IP 67
Cable entry
- with relay module (R) 2 x Pg 13.5
- with transistor module (T) 1 x Pg 13.5
Terminal max. 1 x 1.5 mm2
Mechanical connection
Socket
- thread G 11/2A
- material PP
Electrode rod
- material 1.4571 (stainless steel)
Weight
VEGAKON 66 approx. 0.6 kg
Rod approx. 1 kg/m
Electrical configuration
General data
Conductance min. 0.5 µS/cm with 3 cm electrode covering
(see "4 Setup")
Voltage approx. 3 Veff
Current max. 3 mA
Integration time 0.5 …20 s (adjustable)
Mode (switchable) A: max. detection, overfill protection
B: min. detection, dry run protection
Transistor module
Power supply 10 …55 V DC
Power consumption max. 0.5 W
Output floating transistor output
overload and permanently shortcircuit proof
NPN or PNP action (depending on connection)
Turn-on voltage UB= max. 55 V DC
Switching current IB= max. 400 mA
Voltage loss on the transistor UCE 1 V at IB400 mA
Blocking current IO< 10 µA
Protection class II
Overvoltage category III

6VEGAKON 66
Product description
Relay module
Supply voltage 20 …250 V AC, 50/60 Hz
20 …72 V DC
Power consumption approx. 1 …9 VA, max. 1.5 W
Relay data
- output relay output (DPDT),
2 floating spdts
- contact material AgCdO and Au plated
- potential separation min. 500 V DC
- turn-on voltage min. 10 mV
max. 250 V AC or 250 V DC
- switching current min. 10 µA
max. 5 A AC or 1 A DC
- breaking capacity max. 750 VA or 54 W DC
Protection class I
Overvoltage category II
Operating conditions
Temperatures
Permissible ambient temperature -40°C …+70°C
- relay module at
operating voltage > 60 V DC -40°C …+50°C
Storage and transport temperature -40°C …+80°C
Permissible product temperature -40°C …+100°C
Operating pressure
Max. pressure 6 bar

VEGAKON 66 7
1.5 Dimensions
(dimensions in mm)
Product description
~ 75
85
112
92,5
24
M20x1,5
SW 60
G 1½A
L2
L3
L1
Lmin. = 120 mm
Lmax. = 4.000 mm
ø4
1.6 Type label
Before mounting and electrical connection,
please check if you are using the correct
instrument. Note the type label, it contains
important data and information. The layout
and details of the type label are explained in
the following example.
Layout of the type label
ser. no. 10612892
4
VEGA®KON 66
type KON66.XG1RX
electronics R
power supply 20…72V DC, 20…250V AC
protection IP 66
length 1000 mm
AB-NR. 123456/78
3
1 Master data of the order number
2 Electronics data
3 Order confirmation number
4 Series number
2
1

8VEGAKON 66
Mounting
2 Mounting
2.1 General instructions
- Seal VEGAKON on the thread in case of
gauge or low pressure. Cover the thread with
Teflon tape, hemp or similar or use the sup-
plied seal ring.
- In case of strong vibrations and shocks, e.g.
by stirrers or turbulences in the vessel
etc., it is possible that the rod of
VEGAKON 66 will vibrate or swing. Make
sure that with a fastening at the respective
location, these vibrations are eliminated or
reduced to a minimum.
- With horizontal mounting, rotate the hous-
ing, so that after electrical connection, the
thread connection point downward. This
helps prevent moisture ingress. For this
purpose, the housing is rotatable by 330°.
With vertical mounting, loop the connection
line(s) downward from the PG so that rain
and condensation water can drain off.
- When mounting a VEGAKON 66 laterally, we
recommend installing it approx. 20°in-
clined that the excess medium can drain
off easily and buildup on the insulation is
avoided.
- In case of agitated product surfaces, foam
generation or strong currents in the vessel,
VEGAKON 66 should be mounted in a
bypass tube.
2.2 Installation
- Vertically mounted
with one rod:
For level detection in metallic vessels. The
ground rod can be replaced by the ground
connection to the vessel.
Electrodes with a single measuring rod
only serve a purpose when detection is
done in viscous or highly conductive medi-
ums - in the absence of other rods, no
product bridge can form. As a rule, elec-
trodes including an earth rod should be
used for all other applications.
with two rods:
for level detection (min. or max.)
with three rods:
for pump control/double point control
- laterally mounted with two rod for level detec-
tion
ca. 20˚
The determination of the rod lengths as well
as the response height are explained under
"4.2 Switching point adjustment".

VEGAKON 66 9
Electrical connection
Relay output
Power supply
3 Electrical connection
3.1 Connection instructions
Danger
Switch off the power supply before starting any
connection work.
The electrical connection must be carried out
according to the type of electronics in the
sensor. Connect mains voltage according to
the diagrams on the following pages.
Electrostatic charge
If an electrostatic charge is likely to occur
through product motion, it can be eliminated
by a connection of the external ground termi-
nal on the housing with the nearest ground
potential.
Sensor electronics R-relay output
Sensor electronics T-transistor output
123 4 56 7 8
+
L1 -
N
876
5
4
3
12
max. 250V AC 5A 750VA
max. 250V DC 1A 54W
20...72V DC
20...250V AC
LN
+-
R
KON E66R
max
min
K
TEST
0.1 TEST
300
100
30
0.3
1
310
A
2s
6s
12s
B
off
off
off
1
2
3
45
6
7
1
2
3
45
6
7
KON E66T
FUNCTION
1234 PNP
+-
1234 NPN
+-
I out
max.400mA
10...55VDC
+-
34 12
max
min
K
TEST
0.1
TEST
300
100
30
0.3
1
310
A
2s
6s
12s
B
off
off
off
R
1 Terminals
2 Control lamp (LED)
3 Rotary switch - Conductance adjustment
4 Switch - Integration time
5 Switch - Mode A/B
6 Type label
7 Strap
3.2 Connection, relay module
Floating relay output
Power supply:
- 20 …250 V AC, 50/60 Hz
- 20 …72 V DC
(for further information see "1.4 Technical data")
Used for switching external voltage sources
to relays, contactors, magnet valves, signal
lamps, horns etc.

10 VEGAKON 66
NPN action PNP action
NPN action PNP action
NPN action PNP action
3.3 Connection, transistor module
Floating transistor output
Power supply:
- 10 …55 V DC
(for further information see the following con-
nection examples as well as "1.4 Technical
data")
The transistor switches a second voltage
source with the same reference potential to the
binary input of a PLC or to an electrical load.
1234 1234
+- +-
+- +-
1234 1234
+- +-
+- +++-
1234 1234
+- +-
+- +++---
1234
+-
+-~~
1234
+-
~~
1234
+-
Connection examples
The transistor switches the supply voltage of
the sensor electronics to the binary input of a
PLC or to an electrical load. Through different
connections of the consumer (load), PNP or
NPN action can be attained.
The transistor switches a second, galvani-
cally separated voltage source to the binary
input of a PLC or to an electrical load.
Control of alternating current loads
The transistor switches a galvanically sepa-
rated alternating voltage 10 …42 V AC to a
load.
The transistor switches an alternating voltage
10 …42 V AC, which is also supply voltage, to
a load.
Note
The transistor outputs of several VEGAKON
can be connected in series or in parallel to
combine their signals logically. The connec-
tion must be made so that terminal 2 always
has a higher voltage than terminal 3.
Electrical connection

VEGAKON 66 11
+
–
–
+
Electrical connection
Transistor output in conjunction with a PLC (PNP action)
VEGAKON 66 PLC
E1.0

12 VEGAKON 66
876
5
4
3
12
max. 250V AC 5A 750VA
max. 250V DC 1A 54W
20...72V DC
20...250V AC
LN
+-
R
KON E66R
max
min
K
TEST
0.1 TEST
300
100
30
0.3
1
310
A
2s
6s
12s
B
off
off
off
1
2
3
45
6
7
Setup
4 Setup
4.1 Indicating and adjustment ele-
ments
It is possible to check LED (2) when the
housing is closed. To adjust VEGAKON,
loosen the four screws on the upper side of
the instrument with a screwdriver and re-
move the housing front cover.
1 Terminals
2 Control lamp (LED)
3 Rotary switch - Conductance adjustment
4 Switch - Integration time
5 Switch - Mode A/B
6 Type label
7 Strap
4.2 Switching point adjustment
Position of the rotary switch
Switching point at approx. 1 cm immersion
Rotary switch Conductance
position (product)
(sensitivity)
Test max. Complete immersion is
simulated
0.1 kW> 6.6 mS
0.3 kW> 1.7 mS
1kW> 540 µS
3kW> 180 µS
10 kW> 54 µS
30 kW> 20 µS
100 kW> 5.7 µS
300 kW> 1.6 µS
Test min. Empty condition is
simulated
Examples of conductance values
Medium Conduc- recom.
tance rotary
switch
position
Tap water 0.2 mS 3 kW
Salt water (3.5 %) 35 mS 0.1 kW
Beer 1.4 mS 1 kW
Fruit juice 2 mS 0.3 kW
Milk, yoghurt 3 mS 0.3 kW
Ketchup 15 mS 0.1 kW

VEGAKON 66 13
Setup
Determination of the response height
For horizontally mounted instruments, the in-
stallation height determines the response
height.
For vertically mounted instruments, the re-
sponse height is determined by the length of
the electrode rods.
Modifying the response height by changing
the rotary switch setting (conductance) is not
recommended.
The response height can be corrected by
shortening (sawing off) the measuring rods.
Before shortening, the rods must be re-
moved from the plastic threaded mounting of
the sensor.
The numbers of the rods are visible on the
lower side of the thread.
The ground rod (no. 1) should have the same
length or should be even longer than the other
rods.
The max. rod (no. 2) defines the response
height for single point level switches or the
upper switching level with double point control.
The min. rod (no. 3) defines the lower switching
level, it is always longer than the max. rod. It is
missing on instruments for single point level
detection.
The sensor electronics recognizes if a min.
rod is screwed in and changes automatically
from single to double point control.
Level detection for max. signal
•Fill the vessel until the shortest electrode is
immersed approx. 1 cm.
•Switch on the power supply.
•Set the A/B switch to mode A.
•Set the rotary switch to position "TEST min".
•Turn the rotary switch slowly clockwise until
the red LED lights.
•The instrument is adapted to the medium,
i.e. the relay deenergises at max. level.
Level detection for max. signal
•Empty the vessel until the min. electrode is
immersed approx. 1 cm.
•Switch on the power supply.
•Set the A/B switch to mode B.
•Set the rotary switch to position "TEST
max".
•Turn the rotary switch slowly anticlockwise
until the red LED lights.
•The instrument is adapted to the medium,
i.e. the relay deenergises at min. level.

14 VEGAKON 66
Pump control, mode A
•Fill the vessel until the shortest electrode is
immersed approx. 1 cm.
•Switch on the power supply.
•Set the A/B switch to mode A.
•Set the rotary switch to position "TEST min".
•Turn the rotary switch slowly clockwise until
the red LED lights.
•The instrument is adapted to the medium,
i.e. the relay deenergises at max. level. The
relay energises again only when the level
drops below the lowest point of the min.
electrode.
Example:
A filling pump is switched on when the min.
signal is reached, fills the vessel until the
max. signal is reached and is then
switched off.
Pump control, mode B
•Empty the vessel until the min. electrode is
immersed approx. 1 cm.
•Switch on the power supply.
•Set the A/B switch to mode B.
•Set the rotary switch to position "TEST
max".
•Turn the rotary switch slowly anticlockwise
until the red LED lights.
•The instrument is adapted to the medium,
i.e. the relay energises at max. level. The
relay deenergises when the level drops
below the min. electrode.
Example:
An emptying pump is switched on when the
max. signal is reached, empties the vessel
until the min. signal is reached and is then
switched off.
Setup
Dry adjustment
•With several identical measurement loop
(the same medium), the adjustment of one
instrument with the medium is sufficient, the
determined switch position can be trans-
ferred to all further instruments.
•If the conductance value is known, the
switching point adjustment can be carried
out acc. to the schedule "Rotary switch
position" (under "4.2 Switching point adjust-
ment").
•When exchanging the sensor electronics, it
is sufficient to carry over the settings from
the previous unit.

VEGAKON 66 15
4.3 Functions schedule
The following schedule provides an overview of the switching conditions as they relate to the
set mode and level.
Level Switching condition re- Switching conditioning Control lamp
lay module KON E66 R transistor module VEGAKON
KON E66 T
Mode A Relay energised Transistor conductive does not light
Max. detection
or overfill
protection
Relay deenergised Transistor blocked lights
Mode B Relay energised Transistor conductive does not light
Min. detection
or dry run
protection
Relay deenergised Transistor blocked lights
Power supply failure
Mode Relay energised Transistor blocked does not light
A/B any
Note
If VEGAKON 66 is used for oil warning in water, the oil coating has to be removed from the elec-
trode after responding to oil (= empty signal) as otherwise a correct response to water would
not be ensured.
Setup
64 5
64 5
64 5
64 5
64 5

16 VEGAKON 66
Diagnostics
5 Diagnostics
5.1 Replacement of electronics
Replacing the electronics modules is no
problem, since they are subject to narrow
limits of variation and require no adaptation to
other sensor (mechanical or electrical) com-
ponents.
Before removing the electronics module, the
positions of the conductance switch, the
mode switches and the integration switch
should be noted. Set the new electronics
module to the same values. A fresh adjust-
ment to the medium is unnecessary. As soon
as you insert the sensor electronics, the
VEGAKON is ready for operation.
5.2 Simulation of switching func-
tions
With the switch positions "Test max." and "Test
min.", full immersion (max.) or empty immer-
sion (min.) can be simulated. It is not possi-
ble to move the medium. The level of the
medium does not have to be raised or low-
ered. This enables you to check the re-
sponse of the signalling and switching
systems which are controlled by VEGAKON
66. Certain parts of the sensor electronics
are also checked during the test.

VEGAKON 66 17
Notes

18 VEGAKON 66
Notes

VEGAKON 66 19
Notes

ISO 9001
The statements on types, application, use and operating conditions of
the sensors and processing systems correspond to the latest informa-
tion at the time of printing.
Technical data subject to alteration
2.24 378 / Jan. '00
VEGA Grieshaber KG
Am Hohenstein 113
D-77761 Schiltach
Phone [phone] - 0
Fax [phone] - 201
e-mail [email protected]