Swagelok VCM User Manual

www.swagelok.com

Digital Valve

Control Module

(VCM)

This manual contains important information for the safe and
effective operation of the Swagelok® digital valve control
module. Users should read and understand its contents before
operating the valve control module.

User’s Manual

2 Valve Control Module Use r’s Manual

Contents

Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Product Information . . . . . . . . . . . . . . . . . . . . . . 4

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . 5

Control Drawing . . . . . . . . . . . . . . . . . . . . . . . . 6

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Air Supply Quality . . . . . . . . . . . . . . . . . . . . . . 7

Power Supply. . . . . . . . . . . . . . . . . . . . . . . . .8

DeviceNet™ Network Cable . . . . . . . . . . . . . . . . . 8

Tubing Connections . . . . . . . . . . . . . . . . . . . . . 9

Proximity Sensor . . . . . . . . . . . . . . . . . . . . . . 10

Terminal Strip (SS-VCM-D-6-2). . . . . . . . . . . . . 10

Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Electronic Data Sheet (EDS) . . . . . . . . . . . . . . . . 12

General Tab . . . . . . . . . . . . . . . . . . . . . . . 13

Parameter Tab . . . . . . . . . . . . . . . . . . . . . 13

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Commanding the VCM . . . . . . . . . . . . . . . . . . 16

Response from the VCM . . . . . . . . . . . . . . . . . . 16

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . 17

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . 18

Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Safety

Signal Words Used in this Manual

NOTICE Statements that indicate a hazardous situation which, if not avoided, could result in damage to the

equipment or other property.

Valve Control Module User’s Manual 3

Introduction

The Swagelok VCM uses a sophisticated control and monitoring system to operate up to six pneumatic stream
selecting valves or other discrete valves. This compact system reduces complicated cabling and minimizes
overall power consumption.

The solenoid pilot valves are connected to a common air supply inlet and a common exhaust or vent. Each pilot
valve is also connected to a dedicated outlet used to actuate an external, pneumatic stream selecting valve or
other discrete valve.

An indicator LED shows activation status for each pilot valve. Additionally ODVA-compliant DeviceNet indicators
show module and network status.

Each VCM contains a DeviceNet network interface. The interface includes power for energizing the electronics
inside the VCM and the communication signals, which allow a programmable logic controller (PLC) or similar
system controller to exchange digital data with the VCM. Using the DeviceNet network, each pilot valve can
be commanded to open a pneumatic ow path between the supply inlet and the associated outlet. The VCM
pilot valves are normally closed and will open a ow path between the exhaust and the associated outlet in this
position. See Fig.1.

The VCM is available with proximity sensor inputs and various ingress protection options. Inputs connect to
proximity sensors integrated into the external valves actuated by the VCM. The VCM can be congured to
monitor the sensor inputs and return the sensor state as part of the DeviceNet poll message response.

Network interface

and module power

Inlet IN

Outlet 1

Outlet 2

Outlet 3

Outlet 4

Outlet 5

Optional

proximity

sensors

Pilot valve closed.
Outlet connected
to exhaust EXH.

Outlet 6

Exhaust EXH

Pilot valve open.
Outlet connected
to inlet, IN.

Fig. 1 VCM Schematic

4 Valve Control Module Use r’s Manual

Product Information

Network LED

M12 Network

Connector Plug

Module LED

Valve #1 LED

Cable gland

Interface cover

Mounting holes

Inlet

Grounding lug

Mounting holes

Outlets

Exhaust

Fig. 2 MS-VCMD-6-2

Specifications

Power

Voltage 24 V (dc), nominal

Current < 310 mA (dc) at 24 V (dc)

Wattage < 7.5 W at 24 V (dc)

Temperature

Operating (Ambient) Minimum 23°F

Maximum 122°F (50°C)

Media Minimum 23°F (–5°C)

Maximum 122°F (50°C)

Storage Minimum –4°F (–20°C)

Maximum 140°F (60°C)

Weight 3.5 lb (1.6 kg)

Ingress Protection IP64

Inlet Air

Entity Parameters

Supported
Communication
Baud Rates

Pressure 40 to 116 psig

Air Quality Filtered compressed

See control drawing VCM-DN-0011­SCHEDULE on page 6.

Auto-baud function, allowing the device
to detect the speed of network trafc. It is
compatible with 125, 250, and 500 kbaud
rates.

(1.6 to 7.9 bar)

air, lubricated or

unlubricated, grade of

filtration 40 μm

Valve Control Module User’s Manual 5

(–5°C)

Note: Before installing the VCM in a hazardous location, review the control drawing on page 6.

This will help ensure all electrical connections to and from the VCM comply with safety
requirements. For an electronic copy of this document, see Swagelok.com

6 Valve Control Module Use r’s Manual

Control Drawing

D

1

VCM-DN-0011-SCHEDULE

2

DWG.

NO.

HAZARDOUS LOCATION

Class I, Div. 2, Groups C, D

3

4

Any associated apparatus power

NON-HAZARDOUS LOCATION

5

NONINCENDIVE FIELD

WIRING - POWER CIRCUIT

(PINS 2,3)

supply with Entity Concept

Parameters (1) appropriate for

connection to an nonincendive

device with Entity concept

parameters listed in Table 1.

CONTROL

EQUIPMENT

C

NONINCENDIVE FIELD/

ASSOCIATED APPARATUS

WIRING - SIGNAL CIRCUIT

(PINS 4,5)

Any nonincendive or associated

apparatus communication

controller with Entity Concept

parameters (1) (Vmax, Imax, Ci,

Li) appropriate for connections to

nonincendive devices with Entity

Concept parameters listed in

Table 1.

B

1 - Drain bare

2 - V+ red

3 - V- black

4 - CAN_H white

5 - CAN_L blue

1

Male

5

3 2

Field Wiring Diagram

4

1, 4, 7, 11, 14, 17: Sensor V+

2, 5, 8, 12, 15, 18: Sensor Response

3, 6, 9, 13, 16, 19: Sensor V-

10, 20: No Connect

Sensor Interface

A

-

SHEET

SCALE

1 of 1

NONE

REV.

1

VCM-DN-0011-SCHEDULE

2

DWG.

NO.

Jul-9-12

Jul-9-12

DATE

DATE

JEK

MJR

3

DRAWN BY

CHECK/APR BY

4

APPROVAL/SCHEDULE DRAWING

© Swagelok Company All Rights Reserved

TITLE

.015

.031

5

1 DEGREE

UNLESS OTHERWISE SPECIFIED

TOLERANCE ON ENGLISH DIMENSIONS

6

H/ft.

µ

Sensor Interface

TABLE 3:

7

Associated Apparatus

TABLE 2:

WARNING: ANY CHANGES MADE TO THIS DOCUMENT MUST BE REVIEWED AND APPROVED BY SWAGELOK COMPLIANCE DPT

Voc (or Uo) Voc (or Uo)

Po Po

≥

La (or Lo) La (or Lo)

≥

Isc (or lo) Isc (or lo)

≥

8

DCN

REVISIONS

REV.

Notes:

(1) The Entity Concept allows interconnection of nonincendive apparatus with

associated apparatus not specifically examined in combination as a system when the

approved values of Voc and Isc of the associated apparatus are less than or equal to

Vmax and Imax of the nonincendive apparatus and the approved values of Ca and

La of the associated apparatus are greater than Ci+Ccable and Li+Lcable respectively

for the nonincendive apparatus.

(2) Capacitance and inductance of the field wiring from the nonincendive equipment

to the associated apparatus shall be calculated and must be included in the system

D

Ca (or Co) Ca (or Co)

≤

calculations as shown in Table 1. Cable capacitance, Ccable, plus nonincendive

equipment capacitance, Ci, must be less than the marked capacitance (Lcable, Li

and La or Lo, respectively). Where the cable capacitance per foot are not known, the

following values shall be used: Ccable = 60 pF/ft., Lcable = 0.2

TABLE 1:

≤

Ci

Li

If Po of the associated apparatus is not known, it may be calculated using the formula:

Po = (Voc * Isc)/4 = (Uo * Io)/4.

Nonincendive Equipment

V max (or Ui)

I max (or Ii)

P max (or Pi)

C

(3) Associated apparatus must be installed in accordance with its manufacturer's

control drawing and Article 504 of the National Electrical Code (ANSI/NFPA 70), the

Canadian Electrical Code, or other local installation codes, as applicable. The

resistance of the ground path must be less than 1 ohm.

(4) When required by the manufacturer's control drawing, the associated apparatus

must be connected to a suitable ground electrode per the National Electrical Code

(ANSI/NFPA 70), the Canadian Electrical Code, or other local installation codes, as

applicable. The resistance of the ground path must be less than 1 ohm.

(5) The VCM is powered by two separate nonincendive circuits, designated Power and

Signal as indicated in Tables 1, 2 and 3. Cable and wiring for these two circuits must

maintain the separations for different nonincendive circuits required by Article 504 of

the National Electrical Code (ANSI/NFPA 70), ISA RP12.6 for installing nonincendive

circuits, or other local codes, as applicable.

(6) Associated apparatus must not be used in combination unless permitted by

associated apparatus certification.

(7) WARNING: Substitution of components may impair safety.

(8) The ambient operating (Tamb) range for this product is -5C to 50C.

B

Each unit must be connected to an IP64 or higher rated connector or IP rating will be void.

DESCRIPTION: SWAGELOK DEVICENET PTX CONTROL DRAWING

MATERIAL: NA

(9)

THIS PRINT IS THE EXCLUSIVE PROPERTY OF SWAGELOK COMPANY. IT MUST BE RETURNED ON

REQUEST ALONG WITH ANY DOCUMENTS CONTAINING INFORMATION OBTAINED FROM THIS

A

Fig. 3 VCM-DN-0011 SCHEDULE

ANGLES

.XXX

.XX

-- DIMENSIONS ARE INCHES NEXT TO [MILLIMETERS].

6

7

8

PRINT. NEITHER THIS PRINT NOR ANY PART OF IT NOR ANY INFORMATION CONCERNING IT MAY

BE COPIED, DISCLOSED TO OTHERS OR USED FOR ANY PURPOSE EXCEPT IN FURTHERANCE OF

YOUR BUSINESS WITH SWAGELOK. THE PARTS REFERRED TO ON THIS PRINT MAY BE THE

SUBJECT OF PATENTS AND/OR PENDING APPLICATIONS AND MAY NOT BE MANUFACTURED

WITHOUT PERMISSION FROM SWAGELOK COMPANY.

Valve Control Module User’s Manual 7

Installation

Mounting

The VCM can be mounted using the mounting holes located on the feet of the enclosure. Mounting holes on
the feet of the device are 0.22 inches (5.6 mm) in diameter, and can accommodate a #10 or M5 machine screw.
Tighten the screws to wrench tight.

3.26

(82.8)

1.76

(44.7)

2.33

(59.2)

1.76

(44.7)

2.55

(64.8)

3.21

(81.5)

3.70

(94.0)

6.17

(157)

5.33

(140)

Fig. 4 Mounting Diagram

Grounding

The VCM must be grounded while in operation. This unit can be grounded either through the surface to which
it is mounted (in the event that the VCM is mounted to a grounded plate), or a grounding wire attached to the
ground lug on the side of the VCM. The ground lug is a #10-32 thread and can accommodate a #10 ring lug
connector. The grounding wire should be at least 12 AWG wire. The total resistance between the VCM and
ground should be less than 1 Ω.

Air Supply Quality

The supply air must be ltered to ensure that particles larger than 40 μm have been removed. The air can be
lubricated or unlubricated.

8 Valve Control Module Use r’s Manual

Power Supply

Power supply voltage must be within the range of the DeviceNet standard, which states:
24 volts ±1 % or adjustable to 0.2 %. Use of a lower voltage network power supply will decrease the reliability of
the network and may make it inoperable. Swagelok validated the performance of the VCM operating at 11, 24,
and 28 V (dc).

Note: Due to cable lengths and other devices operating on a network, the supply voltage at the device may not

be the same as at the power supply.

Hazardous Location Power Supply

It is required that a Class 2 power supply be used when the VCM is used in Class 1 Division 2 hazardous
locations. Class 2 power supplies have a maximum power outlet of 100 W.

DeviceNet Network Cable

Cable Length

DeviceNet network cable lengths are dened in ODVA’s DeviceNet Planning and Installation Manual, chapter1,
www.odva.org. Using cable lengths longer than those recommended can result in degradation of signal
integrity and decrease of supply voltage.

Hazardous Location Cable Length

To use the cable in a hazardous location, the total inductance and capacitance of the network must be below
the values set by the power supply being used. The total value can be determined by adding together the
inductance and capacitance values of the devices on the network along with that of the cable.

The Swagelok VCM adds 0 µH and 0 µF to the network.

Cable parameters can be determined from the manufacturer’s datasheet. Assume values of 60 pF/ft and

0.2µH/ft when that information is not available.

Cable Bend Radius

The DeviceNet network cable should not be bent too tightly, as this causes excess strain on the cable and the
attachment point on the device. After the cable has been installed, the bend radius can be adjusted as long as
it is not smaller than its xed radius. Typical cables and their bend radii are presented in the table below. These
values may change based on the manufacturer’s recommendations.

Cable Bend Radii

Cable Type Nominal Cable Dia Installation Bend Radius Fixed Bend Radius

Thick Cable 0.41 in.

Thin Cable 0.24 in. (6.1 mm) 4.80 in. (122 mm) 1.70 in. (43.0 mm)

(10.4 mm) 8.20 in. (210 mm) 2.87 in. (73.0 mm)

Connecting the Cable

Connect the micro M12 connector end of the network cable to the network interface plug on the VCM. Connect
the opposite end to the system network.

Tubing Connections

Mechanical key

Drain

Fig. 5 M12 Female Connector End

2 3

1

4

V-V+

5

CAN_L

CAN_H

V+ = 24 V (dc) supply
V– = Ground
CAN_H = High signal of CAN differential

signal

CAN_ L = Low signal of the CAN differential

signal

Drain = Cable shield, ground at the power

supply end

Valve Control Module User’s Manual 9

The VCM accommodates #10-32 thread connections (ex. face sealed push-to-connect) for 1/8 in. exible
tubing. Face sealed push-to-connects should be installed according to the manufacturer’s instructions.

Max OD = 0.35 in. (8.9 mm)

Inlet

Fig. 6 #10-32 Push-to-Connect Fittings

Numbered outlets

Exhaust

Fig. 7 VCM with #10-32 Push-to-Connect Fittings

1. Connect supply air to the inlet.

Notice: Do not exceed 116 psig (7.9 bar).

2. Connect system valves to any of the numbered outlets. It is not necessary to cap unused outlets.

3. Connect the exhaust to a system vent line.

10 Valve Control Module User’s M anual

Proximity Sensor

The Swagelok VCM model number SS-VCM-D-6-2 is designed to work with the Bi1-EG05-AP6X proximity
sensor manufactured by Turck Inc. These sensors can be added as an option to the applicable Swagelok valve
at the time of purchase. An alternate option is a compatible three-wire, 12 V (dc), PNP proximity sensor.

Note: The SS-VCM-D-6-0 model does not have any capability to interface with proximity sensors.

Terminal Strip with Sealed Enclosure, IP64 (SS-VCM-D-6-2)

For the SS-VCM-D-6-2 model, the proximity sensor wires must be passed through the enclosure before
attachment to the proximity sensor terminal strip.

1. Use a Number 1 Phillips screwdriver to remove the six enclosure mounting screws. Remove the enclosure
and gasket.

Mounting screws

Washers

Enclosure

Gasket

Fig. 8 Remove Enclosure

2. Use an 8 mm wrench to loosen a cable gland nut.

Note: Use a backup wrench to ensure the tting body does not loosen from the enclosure.

8 mm wrench

Backup wrench

Fig. 9 Loosen a Cable Gland Nut

3. Pass the sensor wire through the cable gland body and enclosure gasket.

Note: In order to seal properly, the cable diameter must be between 0.080 and 0.13 inch (2.0 to 3.3 mm).

Valve Control Module User’s Manual 11

4. Connect each wire to the appropriate input on the terminal strip. Connect a brown, a black, and a blue wire
for each valve to be controlled by the VCM.

a. Loosen the set screw for each wire.

b. Insert the wire in the appropriate location. See Fig. 10.

c. Tighten the set screw.

Note: Put a strain relief in place to prevent the wires from being accidentally pulled out.

Brown

Set

screw

Note: Terminal inputs 10 and 20
are no connects.

Black

Blue

Fig. 10 Connect Wire to Terminal Strip

5. Repeat steps 2 through 4 for each proximity sensor to be attached to the VCM.

6. Place the enclosure and gasket against the VCM body, lining up both with the mounting holes.

7. Tighten each cable gland nut on the enclosure to 1.00 in. · lb (0.11 N · m) to maintain IP rating.

8. Insert the six enclosure mounting screws with PTFE washers. Tighten the screws hand-tight in the pattern
shown.

1

5

3

4

6

2

Fig. 11 Tighten Enclosure Screws

12 Valve Control Module User’s Manual

9. Cap any unused cable glands using the caps and O-rings provided to maintain IP rating.

10. Remove the cable gland nut using a 8 mm wrench. Slide an O-ring onto the cable gland body until it is
seated at the base of the threads.

11. Thread on a cap and tighten to 1.00 in. · lb (0.11 N · m) using a 10 mm wrench.

Fig 12 Cap and O-ring Assembly

Setup

Notice: The VCM must be disconnected from the system while performing setup functions.

Electronic Data Sheet (EDS)

1. Download the electronic data sheet (EDS) le from www.swagelok.com.

Note: Altering the EDS in any way voids the product warranty.

2. Open your network conguration tool, such as RSNetWorx™ for DeviceNet.

3. Register the EDS using the network conguration tool.

4. Connect the VCM to the network.

5. Scan the network for the VCM, and click on the device.

6. Use the network conguration tool to set the elds.

Valve Control Module User’s Manual 13

General Tab

Device Address (MAC ID)

The VCM will have a factory set address of 63 when initially powered on. Addresses between 0 and 63 are
valid DeviceNet addresses. Do not duplicate addresses. Duplicate addresses will cause the devices at that
address to be unable to communicate with the network. As noted, new devices will be set to address 63, so it is
recommended to leave that address open to accommodate new hardware.

Assign higher priority devices a low network address as the lowest network address will be given priority during
network arbitration.

Fig 13 General Tab

Parameter Tab

These elds can be set for each of the attached valves. Select the valve to edit and then the desired eld(s).

Fig 14 Parameter Tab

14 Valve Control Module User’s Manual

Fault and Idle Actions

The VCM can be congured to go into a known state, or maintain its last commanded state, in the event of a
Fault or Idle state. The dropdown options are:

■ Fault Value— The Fault Value parameter will determine whether the valve is turned on or off during a fault with

a 1 indicating the valve will be on and a 0 indicating the valve is off.

■ Hold Last State—The valve will remain in the last commanded state in the event of a fault.

The Idle Action dropdown options are the same as the Fault Action dropdown options.

Fig 15 Setting Fault Action

Cycle Count and Limit

The VCM will track how many cycles each valve has had since manufacture. In addition, the user can set the
Cycle Limit eld to send an alarm at a desired cycle count to plan for maintenance. Setting the Cycle Limit to 0
will make that function inoperative.

NOTE: The cycle count is stored to non-volatile memory each time the cycle count grows by more than 10%.

It is not stored each and every time a valve is actuated.

Fig 16 Cycle Count and Limit

Valve Control Module User’s Manual 15

Sensor Configuration

The Sensor Available eld should be set to True when the valve has a proximity sensor attached. Valves
without sensors set to False will provide feedback on the last commanded state. This eld cannot be set for the
SS-VCM-D-6-0 model but will still display on the screen.

Operation

1. Connect the VCM to the system.

2. Verify the system air is on.

Fig 17 Sensor Available

Fig 18 SS-VCM-D-6-2 connected to a SSV series

16 Valve Control Module User’s M anual

Commanding the VCM

The VCM command is a one byte poll request with the valve commands encoded as shown in the table below.

Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

0 0

A valve command of 1 represents an open pilot valve, meaning that pressurized air from the inlet will pass to the
system valve attached to the outlet. A command of 0 closes that pilot valve. For example, a poll request of 0x01
will turn on valve 1.

Multiple valves can be turned on simultaneously. A poll message of 0x03 would turn on valves 1 and 2.

Valve 6

Command

Valve 5

Command

Valve 4

Command

Valve 3

Command

Valve 2

Command

Valve 1

Command

Response from the VCM

The VCM will send a two byte response to all poll requests. The rst byte is the Status Byte, the second the
State Byte. They are described in the tables below.

Status Byte

Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

0 0

Valve 6

Cycle

Status

Valve 5

Cycle

Status

Valve 4

Cycle

Status

Valve 3

Cycle

Status

Valve 2

Cycle

Status

Valve 1

Cycle

Status

The Valve # Cycle Status will return a 0 when the valve’s cycle count is less than or equal to the cycle limit and
a 1 if the cycle limit has been exceeded. If the Cycle Limit has been set to 0, the Valve # Cycle Status should
always be 0.

State Byte

Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

0 0

The State Byte will return the value of the valve states as they were before the poll request requesting the
response.

Note: Due to timing restrictions of the DeviceNet protocol, the State Byte response will not reect the command

that was just sent. In order to monitor VCM valve states without changing which valves are on, send an
identical poll request.

For example:

Valve 1 is currently open, the user would like to open Valve 4, and verify both valves are actuated.

Poll request: 0x09 (keeps Valve 1 open and opens Valve 4)

Poll response: 0x01 (previous state, Valve 1 open)

Poll request: 0x09 (repeat previous message)

Poll response: 0x09 (VCM state, reecting last command)

Valve 6

State

Valve 5

State

Valve 4

State

Valve 3

State

Valve 2

State

Valve 1

State

Valve Control Module User’s Manual 17

Note: The State Byte will return the value of the sensor if a valve is congured to use a proximity sensor. This

means that the poll response may not be the same value as the command sent.

For example, when valve 1 is connected to a normally closed valve with a BI 1-EG05-AP6X sensor and is
congured to accept sensor input, the response will look like:

Valve
State

Off Closed On On 1

On Open Off Off 0

Valve

Position

Sensor

State

Valve Indicator

Light Poll Response

Fig 19 Valve Indicator Light

Maintenance

There are no eld-maintainable parts within the VCM. Contact your authorized Swagelok representative for
assistance.

The following hardware kit is available:

Enclosure Hardware Kit (MS-VCM-KIT1)

This kit contains the components used to attach and seal the interface cover included with the valve control
module, SS-VCM-D-6-2. The contents of this kit are included with that model when shipped from the factory.

■ 6 screws

■ 6 washers

■ 1 interface cover gasket

■ 6 acorn nuts

■ 6 cable gland O-rings

■ 6 cable glands and nuts

Connector Kit (MS-VCM-KIT2)

This kit contains eight #10-32 face seal push-to-connect ttings for use when connecting 1/8 in. plastic tubing
to the valve control module (VCM).

18 Valve Control Module User’s Manual

Troubleshooting

Problem Cause Remedy

Module (MOD) LED

Off No power applied to the device. Connect power.

Green Normal operation. No action needed.

Flashing Green Device needs to be configured Configure device.

Red Device has an unrecoverable fault.

Flashing Red Device has invalid configuration. Check configuration setup.

Network (NET) LED

The device has no power or the channel

Off

Green Normal operation. No action needed.

Flashing Green

Red

Flashing Red

System valves do

not actuate.

System valves

do not return to

normal state

Valve indicator

LED is on when

valve is closed

System valve

is on when the

proximity sensor

is off.

System valves

actuate when the

pilot valve is off.

is disabled for communication due to

bus off condition, loss of network power,

or has been intentionally disabled.

The channel is enabled but no

communication is occurring.

The two-digit numeric display for the

channel indicates an error code that

provides more information about the

condition of the channel.

The communication channel has failed.

The two-digit numeric display for the

channel indicates an error code that

provides more information about the

condition of the channel.

This may indicate a defective scanner.

At least one of the devices in the

scanner’s scan list table has failed to

communicate with the scanner. The

network has faulted.

The two-digit numeric display for the

channel indicates an error code that

provides more information about the

condition of the channel.

General

VCM inlet pressure is too low.

VCM exhaust may be blocked.

The valve has been configured to read

the feedback from the proximity sensor.

The valve and sensor have different

“polarities.”

The inlet pressure is too high.

Cycle power to device. If device fails to recover,

contact your authorized Swagelok representative.

Power-up the scanner, provide network power

to channel, and make sure channel is enabled in

both the scanner configuration table and module

command word.

Configure scan list table for channel to add

device.

Reset scanner. If failures continue,

replace scanner.

Examine the failed device and examine the

scan list table for accuracy.

The system valve actuation pressure may be

different from the VCM operating pressure.
Ensure the inlet pressure is suitable for the

system valve.

Ensure that the VCM exhaust is able to properly

vent.

The valve indicator LED will reflect the value of

the sensor not the position of the valve.

This is normal system operation.

Lower the inlet pressure going to the VCM.

Notice: Applying inlet pressure above the VCM

product rating can permanently damage the pilot

valves.

Valve Control Module User’s Manual 19

Glossary

Term Definition

VCM DeviceNet Valve Control Module

Supply Inlet VCM port to which compressed air supply is connected.

Exhaust VCM port to which exhaust air is vented.

Outlet

System Valve A pneumatically actuated valve which directly controls flow of media.

Pilot Valve

PLC Programmable Logic Controller

Proximity Sensor A proximity sensor allows the VCM to monitor the system valve state.

DeviceNet

Ingress Protection (IP) A measurement of the device’s ability to keep water and dust out of the enclosure.

LED Light Emitting Diodes

MOD LED The Module LED (MOD LED) provides feedback on the status of the module.

NET LED

Electronic Data Sheet
(EDS)

Controller Area Network
(CAN)

Entity Parameters Values used to determine the suitability of the device for use in hazardous environments.

MAC ID Media access controller identifier.

VCM port to which compressed air is passed through when the associated pilot valve is
actuated. These are the ports which will be connected to the system valves.

A small valve that controls actuation air to a system valve. Pilot valves are useful because
they allow a small and easily operated feed to control a much higher pressure or higher flow
feed, which would otherwise require a much larger force to operate.

A CAN based, multi-drop network that connects and serves as a communication network
between industrial controllers and I/O devices.

The Network LED (NET LED) provides feedback on the status of the VCM network
connection.

A data file used by node commissioning tools to interpret parameters on the device.

A message based communication protocol originally designed for automotive application.

Swagelok—TM Swagelok Company
DeviceNet—TM ODVA
RSNetWorx—TM Rockwell Automation, Inc.
© 2012 Swagelok Company
Printed in U.S.A.
Octobe r 2012, R0
MS -13 -221