Norgren VP23 Series User manual

Operation Manual
Proportional Valve VP23 Series
Before arting work read these inructions.
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copyright. No part of this publication may be reproduced,
transcribed or transmitted in any form or by any means
without the written permission of the publisher. Every eort
has been made to ensure that the information contained in this
manual is accurate. All rights reserved.

VP23 Analogue / IO-Link
TCF Fellbach (2021).0203/21
Our policy is one of continued research and development. We therefore reserve the right
to amend, without notice, the speciications given in this document.
Content
1. General 3
2. Liability 4
3. Functional Safety 5
4. Basic Function 6
5. Pneumatic Connection 7
6. Electrical Connection 8
7. Assembly Instructions 11
8. Troubleshooting and Diagnosis 13
9. Transport and Storage 16
10. Disposal 16
11. Appendix 17
This document, as well as the data, speciications and other information presented in it are the sole property
of Norgren. It may not be reproduced or given to third parties without their consent.
Our policy is one of continued research and development. We therefore reserve the right to amend, without
notice, the speciications given in this document.
Order number 7503482000000050
Revision: 2
Manufacturer's Address:
Norgren GmbH
Stuttgart St. 120
D-70705 Fellbach

VP23 Analogue / IO-Link
TCF Fellbach (2021).0303/21
Our policy is one of continued research and development. We therefore reserve the right
to amend, without notice, the speciications given in this document.
1. General
1.1 Information about these Instructions
These instructions allow you to safely set up and operate the proportional valve VP23 in the analogue
or IO-Link version. It is an integral part of the product and must be accessible to the user. The user
must carefully read and understand these instructions before starting any type of work. Following
all safety and handling instructions in this manual is a prerequisite for safe operation.
1.2. Explanation of Symbols Safety Notice
1.3. Speciications
Other Symbols
The following symbols are used to emphasise instructions, outcomes, lists, references and other elements in these instructions.
DANGER
This symbol and the signal word "Danger" indicate an imminent
danger. If not avoided, death or serious injury will result.
The factory-set capacity ranges for the valve are also indicated on the nameplate of the
respective device.
Warning!
This symbol and the signal word "Warning" indicate a possible imminent
danger. danger. If not avoided, death or serious injury can result.
CAUTION!
This combination of symbol and signal word indicates apossibly hazardous situation
that may result in damage to property or environmental damage if it is not avoided.
Indicates tips and other useful information.
Other symbols Meaning
1., 2., 3., Step-by-step instructions
•Lists with no specic order

VP23 Analogue / IO-Link
TCF Fellbach (2021).0403/21
Our policy is one of continued research and development. We therefore reserve the right
to amend, without notice, the speciications given in this document.
2. Liability
2.1. Liability
2.3. General Safety Instructions/ Proper Usage
Physical modiications to the VP23 proportional valve may only be carried out by the manufacturer. If the valve requires
repairs or maintenance beyond the activities described in these instructions, this work may only be carried out by the
manufacturer of the proportional valve or by persons expressly authorized and trained by the manufacturer. Failure to
comply with the above provisions will invalidate the warranty. The manufacturer accepts no liability for any damage caused.
Caution!This product is to be used in industrial compressed air systems only. It is to be used where the pressure and
temperature values listed in the data sheet are not exceeded. Before using the product in non-industrial applications,
in life support or other systems not covered in the published instructions, please contact Norgren directly.
Due to misuse, wear, or malfunction, components used in pneumatic systems can fail in a variety of ways.
System designers are strongly advised to consider the failure modes of all component parts used in pneumatic systems
and to take adequate safety precautions to prevent personal injury and equipment damage in the event of such a failure.
System designers are required to include safety information for the end user in the
operations manual if fault protection is not adequately provided.
System designers and end users are strongly advised to follow the safety instructions included with the products.

VP23 Analogue / IO-Link
TCF Fellbach (2021).0503/21
Our policy is one of continued research and development. We therefore reserve the right
to amend, without notice, the speciications given in this document.
3. Functional Safety
3.1. General Safety Instructions
Note:
The VP23 is not a design with inherent fail-safe characteristics.
Therefore, no safety-related properties can be guaranteed at valve level.
For machine controls (complex mechatronic systems) with the VP23, a risk analysis
according to e.g. EN-ISO12100 is strongly recommended.
Information on the current standards situation can be obtained from the VDMA or the BGIA.
DANGER - Danger due to hazardous movement
Changes to the valve coniguration can lead to unwanted movements or changes to connected consumers under air supply.
Please establish a safe operating condition before changing the valve coniguration. This also applies
in particular to changes via the USB coniguration interface or the IO-Link parameters.
Use suitable stop and vent valves in the supply lines and at the consumer connections for disconnection.
Warning! - Danger from compressed air
After switching off the pressure supply, port 1 may still be under pressure for a longer period of time.
Protect yourself and others by not removing pressurized connections and wear
appropriate personal protective equipment when working!
Depressurize the system before carrying out any work
Have all work carried out by Pneumatics specialists
Warning! - Clogging of silencers
Blockage of the silencers can lead to malfunction of the valve
Ensure appropriate air purity
Warning! - Risk of injury due to noise
Operate the valve only with suitable silencers
Always wear hearing protection when working
Warning! - Risk of injury due to insuficient qualiication
As the operator, make sure that work is only carried out by qualiied specialist personnel
Train the operating personnel comprehensively in safety issues
Have electrical installations carried out by qualiied electricians only
CAUTION - Risk of burns due to hot surfaces
After longer operating times or at high pressures, considerable heat may be
generated at the solenoid. Danger of burns when touched

VP23 Analogue / IO-Link
TCF Fellbach (2021).0603/21
Our policy is one of continued research and development. We therefore reserve the right
to amend, without notice, the speciications given in this document.
4. Basic function
4.1. General Description
4.2. Application
4.3. Function
The VP23 is a digital proportional pressure regulator that uses an electronic setpoint (analogue voltage/current or IO-Link
process data) to control the valve output pressure. The pressure is kept constant even if the medium (compressed air or
neutral gases) is consumed. The actual pressure value is reported back to the user as a voltage output and current output or
as IO-Link process data.
The VP23 allows the stepless adjustment of a pneumatic pressure. This can be used to control or regulate the following
processes: Speed, position, low, force, control of pneumatically actuated control and metering valves.
The valve operates with a closed control loop in which the outlet pressure is constantly detected by the pressure sensor and
compared with the speciied setpoint. If the outlet pressure is lower than the pressure set by the set point or if a higher
pressure is required, the force on the spool is increased via the electric proportional solenoid. A connection is made between
port 1 (inlet pressure) and port 2 (outlet pressure) until the outlet pressure is equal to the speciied set point. If the outlet
pressure is higher than the pressure set by the set point or if a lower pressure is desired, the force on the spool is reduced by
the electric proportional solenoid. A connection is made between port 2 (outlet pressure) and port 3 (vent) until the outlet
pressure is equal to the speciied set point. In addition, after switching off the supply voltage, the last set output pressure is
vented down to 0 bar.
Option: The IO-Link interface allows the user to not only control the output of the device, but also to adjust operating
parameters and monitor various performance feedback such as current output pressure and operating hours.

VP23 Analogue / IO-Link
TCF Fellbach (2021).0703/21
Our policy is one of continued research and development. We therefore reserve the right
to amend, without notice, the speciications given in this document.
5. Pneumatic Connection
5.1 Block Diagram of the Valve Function (3/2 way)
5.2 Operating Medium
Port 1: System (input) pressure
Port 2: Working port (outlet pressure)
Connection 3: Venting
The pneumatic connections are marked with numbers and preferably have the following function and low direction: Flow
direction: 1 => 2 (consumer pressure build-up), 2 => 3 (consumer pressure reduction, venting). Without current the pneumatic
connection 2=> 3 is open.
Connection size: lange-mounted version with connecting plate G 1/4, G3/8, G1/2, G3/4
Filtered, oil-free and lubricated condensate-free compressed air or neutral gases (non-lammable).
Filtering of the supply air (50 µm) is recommended. When using lubricated compressed air, the dynamics and service life can
be inluenced by lubricants and their additives.
Medium temperature: -5 ... 50°C ( 23 ... 122°F) (non-condensing)
To prevent parts from freezing, the compressed air must be free of moisture below 2°C ( 35 °F).
Caution!
When using lubricated compressed air, the dynamics and the service life can be inluenced by the lubricants and their
additives.
Caution!
Avoid sealing the screw connections on the connection plate with Telon sealing tape or other sealing material. Otherwise
sealing material residues could get into the valve body and lead to sluggishness and malfunction of the valve.
The maximum permissible inlet pressures depend on the pressure range:
Set pressure P2 Operating pressure P1 max.
0 (0,02) ... 2bar 7 bar
0 (0,1) ... 10bar 12 bar
0 (0.16) ... 16bar 17 bar

VP23 Analogue / IO-Link
TCF Fellbach (2021).0803/21
Our policy is one of continued research and development. We therefore reserve the right
to amend, without notice, the speciications given in this document.
6. Electrical Connection
6.1 Pin Assignment
6.1.1. Variant Analogue
6.1.1.1. Analogue Input Signals
6.1.1.2. Analogue Output Signals
6.1.1.3. Digital Output Signal
Pin Colour (Typ.) Port size
1 white Setpoint input W(I) 0/4 ... 20mA
2 brown Comparator output X(comp)
3 green Signal ground GNDS
4 yellow Setpoint input W(U) 0 ... 10V
5grey Actual value output X(I) 4 ... 20mA
6 Pink Supply voltage 24 V DC
7 blue Supply mass GND
8red Actual value output X(U) 0 ... 10V
The ground connection of the enclosure should always be connected to achieve optimum continuous EMC protection.
Signals of the pneumatic setpoint input (pressure, only one active, switchable):
Pressure setpoint W(U), GNDS related: Voltage signal 0 ... 10 V, input resistance R > 100kOhms
Pressure Setpoint W(I), GND referred: Current 0/4 ... 20 mA, load 500 Ohms
Pneumatic output pressure signals (both active):
Pressure Actual value X(U), GNDS related: 0 to 10 V = 0 to max. P2, output current max. 1mA
Pressure Actual value X(I), GND related: Current (0)4 to 20 mA, load resistance 500 Ohm recommended
Comparator signal of the pneumatic pressure status, "pressure reached" referred to the setpoint with tolerance range (%
max. P2 ) adjustable, default +/-2%.
X(comp) referred to GND:
Outlet pressure outside switching range (abs(X-W) >= 2%) PLC level Low
Pressure reached (abs(X-W) <2%) PLC level High - Output current max. 10mA
This output can alternatively be conigured as a pressure switch with ixed pressure limits.

VP23 Analogue / IO-Link
TCF Fellbach (2021).0903/21
Our policy is one of continued research and development. We therefore reserve the right
to amend, without notice, the speciications given in this document.
6.1.2. Variant IO-Link
6.2 Power Supply
Pin Colour (Typ.) Port size
1 brown Supply voltage 24V VS
2 white Supply voltage 2L (VA)
3 blue Supply mass (Vs GND)
4 black IO-Link signal (C/Q)
5 grey (gr/ge) Supply ground 2M (VA GND)
This device has an optional IO-Link communication interface that requires an IO-Link-capable module (IO-Link master) for
operation. The IO-Link interface enables direct access to the process and diagnostic data and provides the possibility to set
the parameters of the unit during operation. In addition, communication is possible via a point-to-point connection with a USB
adapter cable for parameterization purposes.
The IODDs required for coniguring the IO-Link unit and detailed information about process data structure
(VA and VS are galvanically isolated)
Nominally the VP23 is supplied with 24V DC. The max. permissible supply range is between 18 and 32 V DC (incl. residual
ripple). The electronics are protected against incorrect polarity of the supply and will not be damaged. However, higher
voltages can destroy the electronics!
Before connecting, make sure that the supply voltage is switched off.
Connect the device as follows:
Supply voltage UB or VA and VS with IO-Link: 24V nominal (18 to 32V DC)
Residual ripple max.: 10%
Current consumption UB or VA with IO-Link:
Max. at 24 V DC: < 2,0 A approx.
Static at 24V DC, 25°C and balanced (X=W): < 0,7A approx.
Current consumption VS with IO-Link at 24V DC: approx. 50mA
The power supply of the proportional directional control valves may only be operated via a supply with safe isolation
from the mains (PELV according to EN 60204-1, DIN VDE 0100-410, IEC 364-4-41, HD 384.4.41 S2, EN 60079-14).

VP23 Analogue / IO-Link
TCF Fellbach (2021).010 03/21
Our policy is one of continued research and development. We therefore reserve the right
to amend, without notice, the speciications given in this document.
Note:
The device must be connected by a qualiied person. The national and international regulations for the installation of electrical
equipment must be observed.
The valve body must always be integrated into the equipotential bonding of the plant (grounding).
The actuator system (=valve solenoid) is activated from 18 V supply voltage. Although the current draw at 24V drops to <
approx. after 1 sec. 0.7 A is limited, peaks of up to 2.0 A can occur. This must be taken into account when designing the system
supply.
In the IO-Link version, the supply voltage of the valve actuator is ensured via a second channel (VA). The valve is therefore
connected via port class B. This must be taken into account when selecting a suitable master.
Power supplies often have electronic current limiting, the activation of which results in a reduction of the output voltage.
This allows the switch-off threshold of the actuator of the VP23 of 18 V to be undershot. Due to the then drastically reduced
current requirement of the valve (~0.08 A), the power supply voltage rises again above the switch-on threshold. This may
cause an undesired oscillation process!

VP23 Analogue / IO-Link
TCF Fellbach (2021).01103/21
Our policy is one of continued research and development. We therefore reserve the right
to amend, without notice, the speciications given in this document.
7. Assembly Instructions
7.1. General Safety Instructions
7.1.1. Pneumatic Connection
7.1.2. Electrical Connection
7.1.2.1. Shielding (Analogue Version)
7.1.2.2. Cable Routing
7.1.3. Combination with other Devices
The valve series is suitable for use in enclosed spaces and normal industrial environments:
Ambient temperature: -5 ... +60°C (23 ... 140 °F)
Mounting position any, preferably vertical, solenoid upwards. Mounting location as close as possible to the consumer. For
moving mounting locations, install the valve at right angles to the direction of acceleration.
If possible, the supply line to 1 should be larger than the nominal valve size. Working line at 2 if possible equal to or larger than
the nominal valve size. Air at vent connection 3 must be discharged without pressure. Line cross-sections and length have an
inluence on the application (buffer volume, pressure drop).
The operating pressure must be higher than the maximum required outlet pressure at P2: Recommendation ≥ 1bar.
For dynamic applications, it is recommended to install a buffer volume (the size of the actuator's working volume) after the
ilter and before port 1.
For further notes on the compressed air supply, see chapter 5 "Pneumatic connection".
When installing the valve, make sure that no damage occurs to the electrical connection. There should be enough space for
the cable routing. Make sure that the cables are routed as follows: crush-free, stretch-free (no pull on the cable), kink-free.
The torque when tightening the union nut should not exceed 0.3 Nm. For the electrical connection, use a cable as listed under
accessories. The correct pin assignment and connection can be found in the operating instructions.
If no listed accessory cable is used, use a shielded cable to avoid interference from electric ields. The shield must be connected
to PE on the system side (see connection diagram).
Supply and signal lines must not be laid parallel to power lines or high-voltage lines. Cable cross-section according to VDE 01134.
Upstream devices (e.g. pressure reducer) Flow rate greater than that of the proportional valve Downstream devices
(e.g. switching valves) Flow rate equal to or greater than that of the proportional valve.

VP23 Analogue / IO-Link
TCF Fellbach (2021).012 03/21
Our policy is one of continued research and development. We therefore reserve the right
to amend, without notice, the speciications given in this document.
Caution!
Before mounting the valve, the pneumatic lines must be cleaned of mounting residues (e.g. by blowing them out).
Caution!
The valve may only be mounted through the three mounting holes of the valve mechanism:
Example VP23 analogue, NG8:
Example VP23 IO-Link, NG16:
7.3 Accessories
7.2. Installation
Detailed ordering information on available accessories can be found in the product data sheet or on our homepage:
https://www.norgren.com

VP23 Analogue / IO-Link
TCF Fellbach (2021).01303/21
Our policy is one of continued research and development. We therefore reserve the right
to amend, without notice, the speciications given in this document.
This has a status LED
8. Diagnostics and Troubleshooting
8.1. LED Function
8.1.1. Analogue Version
LED Description
Valve status green: Status ok (status byte = 0);
red: error state (various triggers; see Table 8.2 Status byte below)
LEDs Description
1. IO-Link Flashes green when there is an IO-Link connection
2. SF
(valve status)
green: Status ok (status byte = 0);
red: error state (status byte > 0: various triggers; see Table 8.2
Status byte below)
3. VSgreen: Voltage ok;
red: voltage missing or too low
4. VAgreen: Voltage ok;
red: voltage missing or too low

VP23 Analogue / IO-Link
TCF Fellbach (2021).014 03/21
Our policy is one of continued research and development. We therefore reserve the right
to amend, without notice, the speciications given in this document.
8.2. Status Byte
8.2.1. Analogue Version:
8.2.2. IO-Link Version
Status byte Detailed device status Error description Recommended measure
0b00000001 UB< min. Power supply UBtoo low. Ensure that a voltage > 18V is present at UB and is
properly connected.
0b00000100 Reserved - -
0b00000100 Control deviation > max. Pressure is outside the set limits. Check that there is sufcient input pressure at
P1.
0b00001000 Valve temperature > max. The max. permissible temperature has been
exceeded.
Ensure a lower ambient resp. Fluid/Ambient
temperature:
0b00010000 Solenoid current to max. The pressure regulator has the max. Valve ow
reached without the actual pressure value
reaching the setpoint.
Check that there is sufcient input pressure at
P1.
Status byte
(process data)
Detailed device status Error description Recommended measure
0b00000001 VS< min. Voltage supply VS too low. Ensure that a voltage > 18V is present at VS and is
connected properly.
0b00000010 Reserved - -
0b00000100 Control deviation > max. Pressure is outside the set limits. Check that there is sufcient input pressure at
P1.
0b00001000 Valve temperature > max. The max. permissible temperature has been
exceeded.
Ensure a lower ambient resp. Fluid/Ambient
temperature:
0b00010000 Solenoid current to max. The pressure regulator has the max. Valve ow
reached without the actual pressure value
reaching the setpoint.
Check that there is sufcient input pressure at
P1.
0b00100000 VA< min. Power supply VAtoo low. Ensure that voltage > 18V to VA is present and
properly connected.

VP23 Analogue / IO-Link
TCF Fellbach (2021).01503/21
Our policy is one of continued research and development. We therefore reserve the right
to amend, without notice, the speciications given in this document.
8.4. Common Errors
Status byte (process data) Detailed device status Recommended measure
LED does not light up Power supply interrupted Check power supply
Valve does not respond to setpoint input Setpoint input is not connected correctly Check port conguration
Valve does not control despite correct setpoint
specication Pressure connections are not connected correctly Check pressure connections
Valve does not reach the adjusted pressure value Inlet pressure is too low / Air extraction quantity is too
high
Set inlet pressure according to specication
Leakage between sub-base and valve O-rings between sub-base and valve are damaged or
incorrectly mounted
Check O-rings on connecting plate
For parameterization and diagnostics, a USB-C interface is located centrally on the cover of the valve under the
dust protection cap. The protective cap must be unscrewed counterclockwise using a suitable screwdriver.
This interface is connected to a Windows PC via the VPTool software.
Note:
Please note that the EMC conformity and the IP protection lose their validity when the cover is open and the interface is
connected. This is only restored by closing the lid.
8.3 Diagnostic Interface

VP23 Analogue / IO-Link
TCF Fellbach (2021).016 03/21
Our policy is one of continued research and development. We therefore reserve the right
to amend, without notice, the speciications given in this document.
9. Transport and Storage
9.2. Storage
9.1 Transport
The individual packages are packed according to the expected transport conditions.
The valves are packed for immediate installation after delivery. Note in case of prolonged storage:
- Leave the valve in the packaging
- Store valve dry and dust-free
- Do not expose the valve to aggressive media (e.g. salty air).
- Protect from sunlight
Note:
The valve and its components can be damaged by transport, corrosion or penetrating foreign bodies.
- Transport the valve in the delivery packaging
- Do not throw or drop packages
- Do not remove the valve from its packaging until immediately before assembly.

VP23 Analogue / IO-Link
TCF Fellbach (2021).01703/21
Our policy is one of continued research and development. We therefore reserve the right
to amend, without notice, the speciications given in this document.
10. Disposal
Dismantle the valves after decommissioning
Recycle the recyclable materials
Note:
Incorrect disposal can cause hazards to the environment
In case of doubt, obtain information on environmentally safe disposal from the local authorities.

VP23 Analogue / IO-Link
TCF Fellbach (2021).018 03/21
Our policy is one of continued research and development. We therefore reserve the right
to amend, without notice, the speciications given in this document.
11. Annex
11.1. Component View
Connector
Protective cover USB connection
Housing
Actuator magnet unit
Valve mechanics

X
6.5
17
21
76.5
3
1
2
35.6
5.5 (3x)
10 (3x)
7.5
(3x)
27
50
91
~10
9
6.6 130~
25
7.530
1
23
M5
4
10.4 37
82.2
55
17.2
(3x)
5.544
18
.5
35.5
18.7
27.4
44.7
5.5 (2x)
10 (2x)
7.5
127
~
10
55
5
12M x1
21.75
ø
ø
ø
ø
ø
VP23 Analogue / IO-Link
TCF Fellbach (2021).01903/21
Our policy is one of continued research and development. We therefore reserve the right
to amend, without notice, the speciications given in this document.
Representation without subplate and silencer
Subplate
VP23 analogue NG8
11.2. Dimensions

X
3
1
2
1
23
6.6 (3x)
11 (3x)
10
(3x)
47
70
111
128
~
146
~
8
.5 49.8
25
59
7.2 160~
1714
112
(97)
20
25.2
73.2
48
17.5 23.1 23.1
51.9
14.6
10
6.6 (2x)
11 (2x)
51.9
3.9
70
21
10.5 38
22
29.8
21.75
76.5
6.5
57
5M
4
4.3
45.8
12M x1
ø
ø
ø
ø
ø
VP23 Analogue / IO-Link
TCF Fellbach (2021).020 03/21
Our policy is one of continued research and development. We therefore reserve the right
to amend, without notice, the speciications given in this document.
Subplate
Representation without subplate and silencer
VP23 analogue NG16