Negele vnv-e User manual

Negele Industrieelektronik GmbH & Co.KG•Raiffeisenweg 7•D-87743 Egg a.d. Günz•Tel. [phone]•Fax [phone]
Application
• level detection of fluid and conductive media in vessels
(min. conductivity 1µS/cm but depending on the level switch)
Application Examples
• full- / empty detection in vessels and pipes
• level control in vessels
• overfill protection in vessels
• dry running protection in pipes (e.g. pump protection)
Features
• measurement signal free of DC-voltage
• only one level switch for up to 5 sensors
• CE-lable
Options / Accessories
• high sensitive version up to 1MOhm available
• version with wire-loop-control available
External Level Switches for
Conductive Level Sensors
Product Information
Order Code
vnv-e, -d, -du, -v, znv-z
vnv-s, -wev, -wd
Order example: vnv-wev.h / 230VAC
vnv-e
vnv-d
vnv-du
vnv-v
znv-z
* Standard:
no declaration
necessary
version with 24VDC power supply
(no further options) high sensitive version
(up to 1MOhm)
power supply
vnv-e vnv-d znv-z vnv-v
vnv-s vnv-wev vnv-wd
version with AC
power supply
vnv-s
vnv-wev
vnv-wd
vnv-w
vnv-sd
230VAC
115VAC
42VAC
24VAC
.n standard*
.h high sensitive
not possible
Type
vnv-e
vnv-d
vnv-du
znv-z
vnv-v
Type
vnv-s
vnv-sd
vnv-wev
vnv-wevh
vnv-wd
vnv-wdh
vnv-w
Sensitivity
0,1...100kOhm
0,1...100kOhm
0,1...100kOhm
0,1...10KOhm
0,1...100kOhm
0,1...100kOhm
Sensitivity
0,1...100kOhm
0,1...50kOhm
0,1...100kOhm
0,1...1MOhm
0,1...100kOhm
0,1...1MOhm
50kOhm fest
Function
1 level control**; switch-on / off delay time adjustable (1...10sec.)
1 level control** and 1 level detection*
switch-on / off delay time adjustable (1...10sec.)
1 level control** and 1 level detection*
switchable sensitivity
2 level detection*
4 level detection*
Function
1 level control**
1 level control**
1 level control**; switch-on / off delay time adjustable (1...10sec.)
1 level control**; switch-on / off delay time adjustable (1...10sec.)
1 level control** and 1 level detection*
1 level control** and 1 level detection*
1 level detection*
Version with 24VDC output; Power Supply 24VDC
Version with relay output; Power Supply 230VAC (Option: 115VAC, 24VAC)
Explanation considering the vnv-wd:
* Level detection: The output is switched as soon as the electrode EO2 gets contact to the medium. It's switched off again when the
electrode looses contact to the medium.
** Level control: The output is switched on as soon as EU1 looses contact to the medium. It keeps switched on until the electrode EO1
gets contact. When EO1 gets contact, the output is switched off and keeps switched off until EU1 looses contact to the medium again. If
you only use M and EO1 of the level control, it works like a level detection.
vnv-wd

Negele Industrieelektronik GmbH & Co.KG•Raiffeisenweg 7•D-87743 Egg a.d. Günz•Tel. [phone]•Fax [phone]
Product Information
Technical Data for Level Switches
vnv-e, vnv-d, vnv-du, znv-z, vnv-v
Style DIN-standard case of ABS for
rail mounting
acc. to EN50022
Dimensions vnv-e; vnv-d;
(WxHxD) vnv-du; vnv-v 45x75x105
znv-z 22,5x75x105
Protection type IP20; terminal
guarded ag. contact
Temperature operating / storage -10...+55°C
Humidity without condensation 65% r.F. max.
Electrode Voltage free of DC voltage 1,5...2VAC/150Hz
Sensitivity adjustable 0,1...100kOhm
Delay Time vnv-e; vnv-d; vnv-du 0,5...10 sec.
(Switch-on / off) adjustable
Power Supply 24VDC
(20...30VDC)
Output active 24VDC
(power supply -10%)
Noise Immunity EMV acc. to EN50081-2 v. 03/94
EN50082-2 v. 02/96
Cable Capacity Sensor-Level Switch 2000pF max.
vnv-s, vnv-sd, vnv-wd, vnv-wev, vnv-w
Style DIN-standard case of ABS for
rail mounting
acc. to EN50022
Dimensions (WxHxD) 45x75x105
Protection type IP20; terminal
guarded ag. contact
Temperature operating / storage -10...+55°C
Humidity without condensation 65% r.F. max.
Electrode Voltage free of DC voltage 8...14VAC/50Hz
Sensitivity vnv-s; vnv-wd; vnv-wev 0,1...100kOhm
vnv-sd 0,1...50kOhm
vnv-w fix 50kOhm
Option -h 0,05...1MOhm
Delay Time vnv-wev 0,5...10 sec.
(Switch-on / offl) vnv-wev adjustable
Power Supply standard 230VAC
option 115VAC; 42VAC
24VAC
Output relay 250VAC/3A
(change over contact)
Noise Immunity EMV acc. to EN50081-2 - 03/94
EN50082-2 - 02/96
Low Voltage Directive acc. to EN61010 - 1995
Cable Capacity vnv-s; vnv-wd; vnv-wev 6000pF max.
(Sensor-Level Switch) vnv-sd; vnv-w 25000pF max.
with option -h 600pF max.
MountingInstructions
If more level switches are mounted side by side, a distance of
5mm must be provided between the level switches.
Before you switch on the level switches, check the terminals if
they are fixed! This is especially important for level switches
with relay output!
Startup the Level Switch
1. Configure the level switch as desired (see page 3)
- set full- / empty function
- set the time delay function (Switch-on / off delay) via the
decode switches (only vnv-d, vnv-du und vnv-wev)
- set the desired delay time via the poti on the front
(only vnv-d, vnv-du und vnv-wev)
2. Connect the level switch according to the connection
pictures on page 4.
3. Set the sensitivity poti to left (0)
4. Wetting the electrode with the medium with the lowest
conductivity
5. Turn the sensitivity poti slowly to th right side until the
relay is switching (LED is glowing)
6. Setup is finished
Funtion Control of the wire-loop-control
(only vnv-sd und vnv-w)
1. Disconnect the cable between sensor and level switch
directly at the terminal of the sensor
2. LED "Drahtbruch" must switch on, relay "Füllstand" and
"Drahtbruch" must switch off.
vnv-e, -d, -du, -v, znv-z
vnv-s, -wev, -wd
Configuration of the Switch Function
The configuration of the switch function is realised by the
integrated decode switches "full / empty" (see page 3).
Switch Function full:
Sensor in the medium -> Output is active / the relay is
switched on (LED is glowing)
Switch Function empty:
Sensor in the medium -> Output is not active, the relay is
switched off (LED is off)
The level switches with wire-loop-control (vnv-sd; vnv-w)
are fix configured to the switch function "empty". A change is
not possible.
The configuration of the switch function in case of using
vnv-wd with relay output can be realised by using the break
contact (=switch function "empty") or the shutter contact
(=switch function "full")
Configuration of the Delay Time
vnv-e; vnv-d; vnv-du
For each output a switch-on or switch-off delay can be
adjusted. A combination is not possible.
decode switch "on" -> switch-on delay
decode switch "off" -> switch-off delay
vnv-wev:
Switch-on and Switch-off delay can be adjusted independent
of each other.
switch S1 closed -> switch-on delay
switch S2 closed -> switch-off delay
switch S1+S2 closed ->switch-on and switch-off delay

Negele Industrieelektronik GmbH & Co.KG•Raiffeisenweg 7•D-87743 Egg a.d. Günz•Tel. [phone]•Fax [phone]
Product Information
vnv-d / vnv-du znv-zvnv-e vnv-v
vnv-wevvnv-s
vnv-e, -d, -du, -v, znv-z
vnv-s, -wev, -wd
Application Examples
Level control in a vessel with additional overfill
protection (e.g. with vnv-wd)
The vessel is filled via the inflow pipe. When the
maximum level (EO1) is reached, the pump is
switched on. As soon as the minimum level
elecrode (EU1) looses contact to the medium the
pump stops. The overfill electrode (EO2) prevents
an overflow of the vessel in case of an error.
Level control in a vessel
(e.g. with vnv-e)
The medium is continously taken out of the vessel
via the outlet in the bottom. As soon as the minimum
electrode (EU) looses contact to the medium, the
valve in the inflow pipe is opened and the vessel
gets filled again. When the medim reaches the
maximum electrode (EO) the valve is closed again
and the filling stops.
Configuration

Negele Industrieelektronik GmbH & Co.KG•Raiffeisenweg 7•D-87743 Egg a.d. Günz•Tel. [phone]•Fax [phone]
NVS-041
NVS-166
NVS-345.2.b
07.04/KaPM65 All data subject to change and errors excluded
Product Information
Electrical connection
vnv-d / vnv-du znv-zvnv-e vnv-v
vnv-wdvnv-wevvnv-sdvnv-s vnv-w
vnv-e, -d, -du, -v, znv-z
vnv-s, -wev, -wd
Overview conductive level sensors
For detailed technical information and the technical data please see the Product Infos "Conductive Mulitlevel Sensor"; "Level
Sensor with M12 Thread hygienic" and "Level Sensor with G1/2" Thread hygienic".
Summary of the technical data and types
Type NVS-04x;06x;08x NVS-14x;16x;18x NVS-345
Process connection M12 hyg. G1/2" hyg. G1" hyg.
Number of electrodes 1 1 2...4
Length of electrodes 2,5; 200mm 4; 200; 500; 4; 200; 500;
850; 1000; 850; 1000;
1500; 2000mm 1500; 2000mm
Material
Electrode 316L (1.4404) 316L (1.4404) 316L (1.4404)
Coating PFA PFA PFA
Isolator PEEK PEEK PEEK
Thread 303 (1.4305) 303 (1.4305) 303 (1.4305)
max. Pressure 10bar 10bar 10bar
Temperature
Cleaning 140°C/30min 140°C/30min 140°C/30min
Process 0...100°C 0...100°C 0...100°C
Compatible fitting EMK-032 EMZ-132 EMZ-352