Negele Industrieelektronik GmbH & Co.KG•Raiffeisenweg 7•D-87743 Egg a.d. Günz•Tel. +49(0)8333/9204-0•Fax +49(0)8333/9204-49
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
