Pepperl+Fuchs NVO5-111 User manual

ISO9001
NVO5-111
WARNING DEVICE
WARNANLAGE
RELAIS D'ALARME
ALARMRELÆ
EN
DE
FR
DA
PROCESS AUTOMATION
MANUAL

With regard to the supply of products, the current issue of the following docu-
ment is applicable: The General Terms of Delivery for Products and Services of
the Electrical Industry, published by the Central Association of the Electrical In-
dustry (Zentralverband Elektrotechnik und Elektroindustrie (ZVEI) e.V.) in its
most recent version as well as the supplementary clause: "Expanded reserva-
tion of proprietorship"
Es gelten die Allgemeinen Lieferbedingungen für Erzeugnisse und Leistungen
der Elektroindustrie, herausgegeben vom Zentralverband Elektroindustrie
(ZVEI) e.V. in ihrer neusten Fassung sowie die Ergänzungsklausel: "Erweiterter
Eigentumsvorbehalt".
Les conditions de vente générales pour les produits et les services de l'industrie
des équipements électriques publiées par la Fédération de l'industrie électron-
ique (ZVEI) s'appliquent dans leur toute dernière version, tout comme la clause
complémentaire "Réserve de propriété élargie".
De almene leveringsbetingelser for produkter og ydelser fra elektronikindustrien,
der er udgivet af Zentralverband Elektroindustrie (ZVEI) e.V. i den seneste ud-
gave samt tillægsklasulen: "Udvidet ejendomforbehold" er gældende".
EN
DE
FR
DA
Warning Device NVO5-111

Warning Device NVO5-111
Contents
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EN
1 Safety................................................................................... 2
1.1 Validity ..........................................................................................................2
1.2 Target Group/Personnel ................................................................................2
1.3 Reference to further documentation..............................................................2
1.4 Symbols used ...............................................................................................3
1.5 Marking.........................................................................................................3
1.6 Intended Use ................................................................................................4
1.7 Improper Use ................................................................................................4
1.8 Mounting/Installation.....................................................................................4
1.9 Operation, Maintenance, Repair ...................................................................5
1.10 Delivery, Transport, Disposal.........................................................................5
2 Product Specifications....................................................... 6
2.1 Function........................................................................................................6
2.2 Components .................................................................................................7
2.3 Design and Dimensions................................................................................8
3 Installation........................................................................... 9
3.1 Mounting the Sensors...................................................................................9
3.2 Mounting the Warning Device .....................................................................10
3.3 Connecting the Warning Device..................................................................11
4 Commissioning................................................................. 14
4.1 Configuring the Warning Device using DIP Switches ..................................14
5 Operation........................................................................... 16
5.1 Alarm Signals..............................................................................................16
5.2 Resetting the Alarm Signal..........................................................................17
5.3 Function Testing..........................................................................................18
6 Troubleshooting................................................................ 19
6.1 Troubleshooting and Alarm Statuses...........................................................19
6.2 Maintaining the Alarm System.....................................................................20
7 Technical specifications .................................................. 21
7.1 Warning Device NVO5-111.........................................................................21

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Warning Device NVO5-111
Safety
EN
1Safety
1.1 Validity
The chapter “Safety”is valid as instruction manual.
Specific processes and instructions in this document require special precautions
to guarantee the safety of the operating personnel.
1.2 Target Group/Personnel
The plant owner is responsible for its planning, installation, commissioning,
operation, maintenance and disassembly.
Mounting, installation, commissioning, operation, maintenance and disassembly
of any devices may only be carried out by trained, qualified personnel.
The instruction manual must be read and understood.
1.3 Reference to further documentation
Laws, standards, or directives applicable to the intended use must be observed.
In relation to hazardous areas, Directive 1999/92/EC must be observed.
The corresponding data sheets, declarations of conformity, EC Type-examination
certificates, certificates and Control Drawings if applicable (see data sheet) are an
integral part of this document. You can find this information under
www.pepperl-fuchs.com.
Due to constant revisions, documentation is subject to permanent change. Please
refer only to the most up-to-date version, which can be found under
www.pepperl-fuchs.com.

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Safety
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1.4 Symbols used
This document contains information that you must read for your own personal
safety and to avoid property damage. Depending on the hazard category, the
warning signs are displayed in descending order as follows:
Safety-relevant symbols
Informative symbols
Action
This symbol indicates a paragraph with instructions.
1.5 Marking
Danger!
This symbol indicates a warning about an immediate possible danger.
In case of ignoring the consequences may range from personal injury to death.
Warning!
This symbol indicates a warning about a possible fault or danger.
In case of ignoring the consequences may cause personal injury or heaviest
property damage.
Caution!
This symbol indicates a warning about a possible fault.
In case of ignoring the devices and any connected facilities or systems may be
interrupted or fail completely.
Note!
This symbol brings important information to your attention.
Warning device
Pepperl+Fuchs GmbH
Lilienthalstrasse 200, 68307 Mannheim, Germany
NVO5-111
BVS 09 ATEX E 137
¬II (1)G [Ex ia] IIB

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Warning Device NVO5-111
Safety
EN
1.6 Intended Use
The warning device is component of an alarm system. The warning device is
suitable for the monitoring of a sensor in the Zone 0 hazardous area of containers,
tanks or double-walled pipes.
The warning device must only be installed in a suitable control cabinet or
NVO5-KV installation housing.
Only one the following sensors must be connected to the warning device:
NVF-104/34-PF overflow sensor
NVFRH-125E overflow sensor
NVF-12* overflow sensor
KVF-103-PF oil level sensor
ON/OFF switch, customer-side
The devices are only approved for appropriate and intended use. Ignoring these
instructions will void any warranty and absolve the manufacturer from any liability.
The device must only be operated in the ambient temperature range and at the
relative humidity (non-condensing) specified.
1.7 Improper Use
Protection of the operating personnel and the overall system is not ensured if the
product is not being used according to its intended purpose.
The equipment is not suitable for isolating signals in high current applications
unless this is noted separately in the corresponding datasheet.
1.8 Mounting/Installation
Prior to mounting, installation, and commissioning of the device you should make
yourself familiar with the device and carefully read the instruction manual.
The device must be disconnected from the power supply prior to installation and
maintenance. The power supply may be activated only after all the circuits
required for operation have been fully assembled and connected.
The devices must be installed outside of the hazardous area.
The device must not be installed at locations where corrosive vapors may be
present.
The devices fulfill a degree of protection IP20 according to IEC/EN 60529.
The devices are designed for use in pollution degree 2 and overvoltage
category III as per IEC/EN 60664-1.

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Safety
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The installation instructions in accordance with IEC/EN 60079-14 must be
observed.
Circuits of type of protection "Ex i" (intrinsically safe) which have been operated
with circuits of other type of protections must not be used as "Ex i" circuits
afterwards.
Intrinsically safe circuits of associated apparatus (installed in safe areas) can be
led into hazardous areas, whereby special attention must be paid to maintain
separation distances to all non-intrinsically safe circuits according to the
requirements in IEC/EN 60079-14.
The respective peak values of the field device and the associated apparatus with
regard to explosion protection should be considered when connecting intrinsically
safe field devices with intrinsically safe circuits of associated apparatus
(verification of intrinsic safety). Make sure to observe IEC/EN 60079-14 and
IEC/EN 60079-25.
1.9 Operation, Maintenance, Repair
The devices must not be repaired, changed or manipulated. If there is a defect,
the product must always be replaced with an original device.
1.10 Delivery, Transport, Disposal
Check the packaging and contents for damage.
Check if you have received every item and if the items received are the ones you
ordered.
Keep the original packaging. Always store and transport the device in the original
packaging.
Always store the device in a clean and dry environment. The permitted storage
temperature (see data sheet) must be considered.
Disposing of devices, packaging material, and possibly contained batteries must
be in compliance with the applicable laws and guidelines of the respective
country.

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Warning Device NVO5-111
Product Specifications
EN
2 Product Specifications
2.1 Function
The warning device is a component of an alarm system. The warning device
monitors the status of a sensor installed in containers, tanks, or double-walled
pipes. The warning device is suitable for use:
As a safeguard to prevent flammable liquids from overflowing or leaking
To detect the oil layer thickness
As a replacement for a faulty NVO5-11 warning device
LEDs at the device indicate alarm, sensor fault and system and sensor status.
In the event of an alarm, an additional acoustic signal sounds.
Input
Only one of the following devices may be connected to the warning device:
NVF-104/34-PF overflow sensor
NVFRH-125E overflow sensor
NVF-12* overflow sensor
KVF-103-PF oil level sensor
ON/OFF switch, customer-side
ON/OFF switches may be:
Floating switches
Reed contacts
Mechanical switches
The ON/OFF switch sends an input signal to the warning device:
0Ω= closed
∝Ω= open
Output
If required, you can connect a remote alarm or a central monitoring system to the
volt-free relay contacts on the outputs.
Connect a central monitoring system to the alarm relay.
Connect a remote alarm, for example a sounder, to the signal relay.

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Product Specifications
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2.2 Components
The alarm system can comprise the following components:
Warning device
Sensors
Accessories
Description Type code
Intrinsically safe warning device, 230 VAC NVO5-111
Description Type code
Overflow sensor, for detecting excessively high liquid levels NVF-104/34-PF
Overflow sensor, for detecting excessively high liquid levels
Can no longer be delivered. NVFRH-125E
Overflow sensor, for detecting excessively high liquid levels
Can no longer be delivered. NVF-12*
Oil level sensor, for detecting the oil layer thickness
Can no longer be delivered. KVF-103-PF
Description Type code
Cable connector for one sensor LAL-SK2
Mounting set for one sensor NVO5-B
Installation housing with DIN mounting rail NVO5-KV

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Warning Device NVO5-111
Product Specifications
EN
2.3 Design and Dimensions
Figure 2.1
1DIP switches
2LEDs
3Connections for power supply, alarm relay, and signal relay
4Reset button
5Connections for sensor or ON/OFF switches
NV05-111
SUPPLYALARM
RESET SENSOR FAILURE
ALARMSYSTEM
OK
68301 Mannheim Germany
www.pepperl-fuchs.com
LEVELALARM
70 58
86
54
423
51

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Installation
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3 Installation
3.1 Mounting the Sensors
The containers or tanks can be made of various materials. We recommend using
the following methods to secure the device in a suspended position:
If mounting the device in concrete containers, use the NVO5-B mounting set.
If mounting the device in containers made from other materials, such as
plastic or metal, use other suspension devices as appropriate, for example,
screws and screw anchors.
Note!
Before mounting the sensor, read the section on safety, and in particular the
section on mounting/installation.
Do not remove the type label.
During installation, refer to the instructions provided by the manufacturer of
the container or tank.
Warning!
Risk of short circuit
Injuries and damage to the device are possible when working with live parts.
Before working on the device, always disconnect the supply voltage.
Connect the device to the supply voltage only after completion of the work.
Caution!
Malfunction or damage through connection of several sensors.
In case of nonobservance, the safety and operation of the entire alarm system is
not guaranteed.
Connect only one sensor to the warning device. The warning device is designed
for the connection and operation of one sensor only.
Note!
Further information about the sensors are available in the sensors manuals.

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Warning Device NVO5-111
Installation
EN
3.2 Mounting the Warning Device
Mounting the warning device on the DIN mounting rail.
Clip the device onto the DIN mounting rail.
The warning device engages with an audible click. The warning device is
mounted.
Figure 3.1
Note!
If installing the device in an enclosure or switch cabinet, follow the mounting
instructions provided by the manufacturer of the enclosure or switch cabinet.
Caution!
Malfunction or damage resulting from overheating
If the external temperature exceeds 60 °C at maximum load, the device may
become damaged.
Ensure sufficient ventilation at the installation site
Maintain a minimum distance of 5 mm between the devices on the
DIN mounting rail.
Click!

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Installation
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3.3 Connecting the Warning Device
Connecting the Warning Device
1. Connect one of the following devices (2):
- Terminals 13 and 15: NVF-104/34-PF, NVFRH-125E, NVF-12* or
KVF-103-PF sensor
- Terminals 22 and 24: ON/OFF switch
Ensure the polarity of the cable is correct when connecting the cables.
2. Use the LAL-SK2 cable connector to extend the cable.
3. Connect to the power supply (4):
- Terminal 7: phase (F/L2)
- Terminal 6: neutral (N/L1)
- Terminal 5: ground (loop terminal)
4. If required, connect a central monitoring system (5) to terminals 1 to 3.
5. If required, connect a remote alarm (6) to terminals 10 to 12.
Note!
Before connecting the device, read the section on safety, and in particular the
section on mounting/installation.
Do not remove the type label.
Warning!
Risk of short circuit
Injuries and damage to the device are possible when working with live parts.
Before working on the device, always disconnect the supply voltage.
Connect the device to the supply voltage only after completion of the work.
Note!
Avoid routing the sensor cable parallel to other cables, as these cables may
transmit interfering signals. These interfering signals may affect the sensor signal
and impair the alarm function. Use unshielded 2-strand cables for each sensor.
To ensure the warning device functions correctly, do not exceed the following
maximum sensor cable lengths:
With a cable cross section of 0.75 mm2, the maximum cable length is 190 m.
With a cable cross section of 1 mm2, the maximum cable length is 250 m.

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Warning Device NVO5-111
Installation
EN
Note the following maximum connection values:
NVF-104/34-PF and NVFRH-125E overflow sensors:
• Total inductance: 0.4 mH
• Total resistance: 10 Ω
KVF-103-PF oil level sensor:
• Total inductance: 0.3 mH
• Total resistance: 20 Ω
ON/OFF switch:
• Total resistance: 20 Ω
Figure 3.2 Connection example: NVF-104/34-PF overflow sensor
Connecting and Configuring the Warning Device with Sensor
1Sensor connection
2- NVF-104/34-PF overflow sensor
- NVFRH-125E overflow sensor
- NVF-12* overflow sensor
- KVF-103-PF oil level sensor
3DIP switches
4Power supply
5Alarm relay
6Signal relay
bu blue
bn brown
OFF
ON
13 15 22 24
10 11 12123 567
12345678
bubn
230 V AC
32
1
4
65

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Figure 3.3 Connection example: ON/OFF switch
Connecting and Configuring the Warning Device with ON/OFF Switch
1ON/OFF switch connection
2ON/OFF switch
3DIP switches
4Power supply
5Alarm relay
6Signal relay
bu blue
bn brown
OFF
ON
13 15 22 24
10 11 12123 567
12345678
bubn
230 V AC
3
2
4
65
1

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Warning Device NVO5-111
Commissioning
EN
4 Commissioning
4.1 Configuring the Warning Device using DIP Switches
The DIP switches are located on the right side of the device. See chapter 2.3.
Figure 4.1 Overview of the warning device DIP switches
Configuring the Warning Device
Configure the warning device using the DIP switches. The following tables show
the possible configuration settings.
Configuring the Sensor Type
SIGNAL RELAY
RESET ALARM FUNCTION
REPEAT ALARM IN 24 HOURS
SOUND AT ALARM
SELECTION LEVEL
OFF
ON
12345 876
NVO5
ON-OFF SW.
KVF
NVF-HIGH
NVF-MID
NVF-LOW
A
OFF
OFF OFF
HLD.ALARM
B
ON
ON ON
INV.SIGNAL
SENSOR TYPE
Sensor type DIP 1 DIP 2 DIP 3
NVF-LOW: The NVF-*** sensor is used in hot media at
temperatures between 5 °C and 60 °C,
e. g., heavy-duty heating oil.
OFF OFF OFF
NVF-MID: The NVF-*** sensor is used in media with an
ambient temperature of between -20 °C and 40 °C,
e. g., oil or petrol.
ON OFF OFF
NVF-HIGH: The NVF-*** sensor is used in very cold media,
e. g., liquid gas. OFF ON OFF
KVF: KVF-103-PF sensor ON ON OFF
ON/OFF SW.: ON/OFF switch,
e. g., floating switch or reed contact ON OFF ON

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Commissioning
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Configuring the Functions
Switches Description
DIP 4 SELECTION LEVEL
(alarm function type) APosition A: max. alarm
Oil layer thickness achieved (KVF sensor)
High liquid level (NVF sensor)
BPosition B: min. alarm
Low liquid level (NVF sensor)
DIP 5 SOUND AT ALARM
(audible alarm) OFF The audible alarm is not active.
ON The audible alarm is active.
DIP 6 SIGNAL RELAY (signal
relay) HLD.ALARM The signal relay tracks the alarm relay and performs a hold function at the same time. The
hold function can be reset.
INV.SIGNAL The signal relay tracks the sensor. The signal
relay is activated in the event of an alarm.
DIP 7 REPEAT ALARM IN
24 HOURS (repeat
alarm)
OFF The repeat alarm function is not active. After
pressing the "ALARM RESET" button, the audible
alarm is deactivated.
ON The repeat alarm function is active. If the alarm
status is still active after 24 hours, after the alarm
was reset, the audible alarm is triggered again.
The volt-free relay contact switches.
DIP 8 RESET ALARM
FUNCTION
(ALARM RESET
activation)
ON The "ALARM RESET" button is activated. The
audible alarm and the volt-free relay contact can
be reset.
OFF The "ALARM RESET" button is deactivated. The
audible alarm and the volt-free relay contact
cannot be reset.

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Warning Device NVO5-111
Operation
EN
5Operation
5.1 Alarm Signals
The warning device indicates an alarm status or sensor fault both visually and
audibly. Once normal status has been reestablished, the "ALARM" LED goes out.
LED Status Meaning
Yellow "SUPPLY" LED Illuminated The supply voltage is connected to the
warning device. The warning device is in
operation.
Flashing The overflow sensor is in the warm-up
phase.
Green "SYSTEM OK"
LED Illuminated No active alarm or faults. The warning device is operating normally.
Flashing No active alarm or faults. A fault or alarm
occurred in the past.
Yellow "ALARM" LED Illuminated An alarm is active. The volt-free relay
contact and the audible alarm can be
reset. The visual alarm cannot be reset.
Red
"SENSOR FAILURE"
LED
Illuminated A fault is active. The volt-free relay contact
and the audible alarm can be reset. The
visual alarm cannot be reset. The following
causes are possible:
Sensor fault
Faulty sensor
Lead breakage or short circuit

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Operation
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5.2 Resetting the Alarm Signal
Distinction is drawn between two types of alarm signals:
Past-event alarm
Real-time alarm
Resetting a Past-Event Alarm
Prerequisites:
The "RESET ALARM FUNCTION" DIP switch is set to ON.
The "SYSTEM OK" LED is flashing.
1. Press the "ALARM RESET" button.
The alarm signal is reset. The "SYSTEM OK" LED goes out.
2. Check the status of the container or tank and the sensor. See chapter 6.
The cause of the alarm has not yet been rectified. The alarm status may
reoccur.
Resetting a Real-Time Alarm
Prerequisites:
The "RESET ALARM FUNCTION" DIP switch is set to ON.
The "SENSOR FAILURE" and/or "ALARM" LEDs are illuminated.
1. Press the "ALARM RESET" button.
The volt-free relay contact and the audible alarm are reset. The "SENSOR
FAILURE" and/or "ALARM" LEDs are still illuminated.
2. Check the status of the container or tank and the sensor. See chapter 6.
The cause of the alarm has not yet been rectified. If the "REPEAT ALARM
IN 24 HOURS" DIP switch is set to ON, the alarm is repeated after 24 hours.
See chapter 4.
3. Rectify the cause of the alarm or fault. See chapter 6.
The "SENSOR FAILURE" and/or "ALARM" LEDs go out.

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5.3 Function Testing
Checking the Warning Device
The warning device is maintenance-free. To ensure the entire alarm system
functions correctly, check the function of the warning device at the following
intervals:
1. Check the function of the warning device at least once a year.
2. If the warning device is used in difficult conditions, perform this check more
often.
To test the function of the warning device, you can perform an LED and relay test.
Activating the Function Test
Press the "ALARM RESET" button and hold for approximately 3 seconds.
An audible signal sounds.
The warning device then automatically runs through the following test steps:
1. The warning device switches to test mode.
2. Each LED illuminates in turn for 1 second.
3. Both relays are activated in turn for 1 second.
4. An audible signal sounds.
5. The warning device returns to the current status.
Note!
Further information about the sensors are available in the sensors manuals.