Ingersoll Rand System Automation VSD Box Instruction Manual

Ingersoll Rand

System Automation

Before installing or starting this unit for the first
time, this manual should be studied carefully to
obtain a working knowledge of the unit and or the
duties to be performed while operating and
maintaining the unit.
RETAIN THIS MANUAL WITH UNIT. This Technical
manual contains IMPORTANT SAFETY DATA and
should be kept with the unit at all times.

Instruction Manual

VSD Box

More Than Air. Answers.

Online answers: http://www.air.irco.com

C.C.N. : 80444128
REV. : B
DATE : JULY 2008

SECTION 1  TABLE OF CONTENTS

Section 1 - tABLe oF contentS .............................3

Section 2 - intRoDUction ......................................4

Section 3 - SAFety ......................................................4

INSTALLATION .............................................................................4

OPERATION

MAINTENANCE AND REPAIR

..................................................................................4

.................................................4

Section 4 - coMPReSSoR connection AnD

contRoL .........................................................................5

COMPRESSOR CONNECTION AND CONTROL ................5

STANDARD CONTROL FEATURES AND
FUNCTIONALITY

VSD BOX OPERATION

.........................................................................5

...............................................................6

Section 5 - inStALLAtion .........................................7

UNIT LOCATION ..........................................................................7

POWER SUPPLY

RS485 NETWORK

...........................................................................7

........................................................................7

Section 12 - PARtS LiSt .......................................... 25

IR VSD BOX .................................................................................25

Section 13 - tecHnicAL DAtA ............................... 25

VSD BOX ...................................................................................... 25

Section 14 - WiRinG DiAGRAM ............................. 26

Section 15 - coMMiSSioninG FoRM .................. 28

Refer to Section Indicated

Note

Important or Caution, Safety

PRESSURE SENSOR CONNECTIONS

VSD AND IRPCB COMPRESSOR CONNECTIVITY ..........9

IRPCB COMPRESSOR CONTROL ..........................................9

IRPCB COMPRESSOR STATUS MONITORING .................9

.............................................................................................9

READY

RUNNING

LOADED

.................................................................................... 10

......................................................................................10

....................................8

Section 6 - VSD BoX HARDWARe

conFiGURAtion ........................................................ 12

Section 7 - inGeRSoLL RAnD to VSD BoX

inteRconnect ........................................................... 13

Section 8 - coMMiSSioninG ................................. 15

Section 9 - DiSPLAy AnD MenU oPeRAtion .... 17

MENU NAVIGATION ...............................................................17

Section 10 - DiAGnoSticS ..................................... 22

Section 11 - oPeRAtion ......................................... 23

KEYPAD ........................................................................................23

DISPLAY .......................................................................................23

INDICATORS ..............................................................................23

USER MENU ITEMS.................................................................. 24

POWER FAILURE AUTORESTART ......................................24

3

SECTION 2  INTRODUCTION

The VSD Box is intended to provide a method of
system integration for a VSD (Variable Speed Drive) air
compressor that is not equipped with any accessible
means of remote connectivity (such as the Ingersoll

SECTION 3  SAFETY

WARNING : Risk of Danger

WARNING : Risk of Electric Shock

WARNING : Risk of High Pressure

WARNING : Consult Manual

Before installing or operating the VSD BOX, take time

•

to carefully read all the instructions contained in this
manual, all compressor manuals, and all manuals of
any other peripheral devices that may be installed or
connected to the unit.

Electricity and compressed air have the potential to

•

cause severe personal injury or property damage.

The operator should use common sense and good

•

working practices while operating and maintaining
this system. All applicable codes should be strictly
adhered to.

Maintenance must be performed by adequately

•

qualified personnel that are equipped with the
proper tools.

INSTALLATION

Installation work must only be carried out by a

•

competent person under qualified supervision.

A fused isolation switch must be fitted between the

•

main power supply and the VSD BOX.

The VSD BOX should be mounted in such a location

•

as to allow operational and maintenance access
without obstruction or hazard and to allow clear
visibility of indicators at all times.

If raised platforms are required to provide access to

•

the VSD BOX, they must not interfere with normal
operation or obstruct access. Platforms and stairs
should be of grid or plate construction with safety
rails on all open sides.

OPERATION

The VSD BOX must only be operated by competent

•

personnel under qualified supervision.

Never remove or tamper with safety devices, guards

•

or insulation materials fitted to the VSD BOX.

Rand Nirvana). The VSD Box will provide the required
functionality to enable system integration and efficient
control using the X8I Automation System.

The VSD BOX must only be operated at the supply

•

voltage and frequency for which it is designed.

When main power is switched on, lethal voltages are

•

present in the electrical circuits and extreme caution
must be exercised whenever it is necessary to carry
out any work on the unit.

Do not open access panels or touch electrical

•

components while voltage is applied unless it is
necessary for measurements, tests or adjustments.
Such work should be carried out only by a qualified
electrician equipped with the correct tools and
wearing appropriate protection against electrical
hazards.

All air compressors and/or other equipment

•

connected to the unit should have a warning sign
attached stating ‘THIS UNIT MAY START WITHOUT
WARNING’ next to the display panel.

If an air compressor and/or other equipment

•

connected to the unit is to be started remotely,
attach two warning signs to the equipment stating
‘THIS UNIT CAN BE STARTED REMOTELY’. Attach one
sign in a prominent location, one on the outside of
the equipment, and the other inside the equipment
control compartment.

MAINTENANCE AND REPAIR

Maintenance, repairs or modifications must only be

•

carried out by competent personnel under qualified
supervision.

If replacement parts are required use only genuine

•

parts from the original equipment manufacturer, or
an alternative approved source.

Carry out the following operations before opening or

•

removing any access panels or carrying out any work
on the VSD BOX:

Isolate the VSD BOX from the main electrical

i.

power supply. Lock the isolator in the ‘OFF’
position and remove the fuses.

Attach a label to the isolator switch and to the

ii.

unit stating ‘WORK IN PROGRESS - DO NOT
APPLY VOLTAGE’. Do not switch on electrical
power or attempt to start the VSD BOX if such
a warning label is attached.

Make sure that all instructions concerning operation

•

and maintenance are strictly followed and that
the complete unit, with all accessories and safety
devices, is kept in good working order.

4

5

1

2

1

2

1

2

The accuracy of sensor devices must be checked

• The VSD BOX must only be cleaned with a damp

on a regular basis. They must be calibrated when
acceptable tolerances are exceeded. Always ensure
any pressure within the compressed air system is
safely vented to atmosphere before attempting to
remove or install a sensor device.

•

cloth, using mild detergents if necessary. Avoid the
use of any substances containing corrosive acids or
alkalis.

Do not paint the control faceplate or obscure any

•

indicators, controls, instructions or warnings.

SECTION 4  COMPRESSOR CONNECTION AND CONTROL

COMPRESSOR CONNECTION AND CONTROL

The VSD BOX is designed to connect to an X8I
Automation System unit, using a 2-wire RS485 data cable.

The VSD Box is intended to provide a method of system
integration for the Ingersoll Rand Bolt-On VSD’s as well
as other 3rd party air compressors that are not equipped
with any accessible means of remote connectivity.

Each air compressor in a system that requires VSD Box
integration must be equipped with an individual VSD
Box. Any number of VSD Boxes can be connected to the
Automation System unit as long as the total number
of compressors does not exceed the total number of
compressors for the Automation System model.

In conjunction with a ‘speed monitoring kit’ (available
separately) the VSD Box will provide all required
functionality to maximize the ENER, energy control mode,
in the X8I or X12I Automation System

3) 3rd party integrated VSD air compressors that are
equipped with a single package discharge pressure
sensor (1).

STANDARD CONTROL FEATURES AND
FUNCTIONALITY

The Bolt-On VSD or the VSD equipped air compressor
must be equipped with a 4-20mA pressure sensor or a

0.5V to 4.5VDC a pressure sensor that is used for variable
speed drive regulation or compressor pressure regulation
control. A VSD Box will accommodate a pressure sensor
range of 1.0bar to 600bar.

Various Compressor Configurations and Characteristics
Can Be Accommodated by the VSD Box. These include:

1) Bolt-On VSD air compressors that are equipped with
two pressure sensors (1 and 2) that both monitor
package discharge pressure. One sensor is dedicated
to the compressor control system for load/unload
regulation functions and the other pressure sensor
is dedicated to the VSD for variable speed drive
regulation.

2) Bolt-On VSD air compressors that are equipped with
a package discharge pressure switch (1) dedicated
to the compressor control system for load/unload
regulation and a pressure sensor (2) dedicated to the
VSD for variable speed drive regulation.

4) 3rd party integrated VSD air compressors that are
equipped with a package discharge pressure sensor
(1) and a second internal pressure sensor (2). The
internal pressure sensor is generally used for internal
air/oil filtration differential pressure monitoring and/
or internal pressure safety functions.

NOTE: There are VSD air compressors that are unable
to maintain maximum speed operation for a prolonged
period of time. In these instances, the compressor control
system may automatically reduce speed regardless
of demand. The VSD Box and Automation System will
recognize this, and if necessary, utilize an additional
compressor to meet demand.

NOTE: There are VSD air compressors that are unable
to maintain minimum speed operation for a prolonged
period of time. In these instances, the compressor control
system may automatically stop the compressor regardless
of demand. The VSD Box will recognize and accommodate
this behavior. The Automation System will indicate and
record the compressor status correctly without fault
indication.

VSD BOX OPERATION

From VSD Box

To ir-PCB

To Intellisys Controller

From VSD Box

To ir-PCB

To 1PS Pressure Switch

From Pressure Transducer

To VSD Box

From VSD Box

To IR-5000 Pressure Transducer Input

From Pressure Transducer

To VSD Box

From VSD Box

To IR-5000 Pressure Transducer Input

All air compressors are equipped with a method of
sensing pressure. An air compressor regulates using the
compressor package discharge pressure as the control
variable.

The VSD Box monitors the compressor pressure sensor
as an input and simulates the pressure sensor signal as
an output. The VSD Box uses this method to modify the
pressure signal and manipulate the behavior of the air
compressor. In other words, the VSD Box becomes the air
compressor pressure sensor. This functionality enables
the Automation System unit to utilize the compressor
effectively and optimize total system efficiency and
maintain air quality.

The VSD Box also monitors compressor status (Ready,
Run, and Load/Unload) and continuously reports this
information to the Automation System unit. This function
enables the VSD Box to simulate all features of a standard
X8I or X12I network compressor integration.

Actual System pressure and the Automation System
‘target’ pressure information is routinely transmitted
from the X8I or X12I to the VSD Box. The VSD Box uses
this information to calculate the difference between
the compressor discharge pressure and the system
‘target’ pressure. The VSD Box utilizes pressure signal
manipulation to continuously re-align compressor output
with system requirements.

This functionality also enables the VSD Box to
continuously compensate for any pressure differential
that may occur across local air treatment, along air pipe
work or between different locations in a compressed air
network.

6

7

1

VOLTAGE SELECT

2 3 4

X04

1

VOLTAGE SELECT

2 3 4

X04

230Vac

115Vac

XPM-TAC24

L2
L1

X07

L2

L1

2

SECTION 5  INSTALLATION

It is recommended that installation and commissioning
be carried out by an authorized and trained product
supplier.

UNIT LOCATION

The VSD Box is wall mounted using conventional screws/
bolts. The maximum distance between the X8I or X12I
and the VSD Box is 4000ft (1219 meters) of cable length.
The maximum distance between the VSD Box and
each compressor is 330ft (100 meters) of cable length
and within 330ft (100 meters) of cable length from any
pressure sensor option (if applicable)..

POWER SUPPLY

A fused switching isolator must be installed to the
main incoming power supply, external to the VSD Box.
The isolator must be fitted with a properly sized fuse
to provide adequate protection to the power supply
cable used (in accordance with local electrical and safety
regulations).

1 2 3 4

L

N

N L E

EE

X01

RS485 data communications and other low
voltage signals can be subject to electrical interference.
This potential can result in intermittent malfunction
or anomaly that is difficult to diagnose. To avoid this
possibility always use earth shielded cables, securely
bonded to a known good earth at one end. In addition,
give careful consideration to cable routing during
installation.

a.

Never route an RS485 data communications or low
voltage signal cable alongside a high voltage or 3­phase power supply cable. If it is necessary to cross
the path of a power supply cable(s), always cross at a
right angle.

b.

If it is necessary to follow the route of power supply
cables for a short distance (for example: from a
compressor X8I to a wall along a suspended cable
tray) attach the RS485 or signal cable on the outside
of an earthed cable tray such that the cable tray
forms an earthed electrical interference shield.

c.

Where possible, never route an RS485 or signal cable
near to equipment or devices that may be a source
of electrical interference (for example: 3-phase
power supply transformer, high voltage switchgear
unit, frequency inverter drive module, radio
communications antenna).

Power Supply Terminals

Ensure that the voltage select input is properly
jumpered for the incoming power. Default voltage
configuration is 230Vac.

RS485 NETWORK

The VSD Box is equipped with an RS485 network
communications capability using the ir485 protocol.
The VSD Box is intended to operate as part of the X8I
or X12I Automation System. Connection to the system
management unit is two-wire, twisted pair, earth
shielded, RS485 data link. Connect the RS485 data
cable wires to terminal X07 located on the VSD Box ‘S1’
controller.

Note: Polarity is important.

The cable used between the X8I and the VSD Box is
Belden 9841 (or equivalent). It should be run in grounded
conduit and should not be greater than 4000 feet (1219
meters) in length.

PRESSURE SENSOR CONNECTIONS

Consult the X8I Interconnect and Application Guide
prior to the installation of the VSD Box to the pressure
sensor on the VSD and the compressor.

Pressure sensor connectivity is dependant on compressor
and control system type.

Electrical Interference

0.5 to 4.5VDC Pressure Sensors

Voltage sensors and cables carrying low voltage analog
signals are highly susceptible to interference.

4 to 20mA Pressure Sensors

Always use shielded, 18 gauge, 2-conductor cable
no more than 330 feet (100 meters) in length. Ensure
the shield wire is securely connected to earth ground
at the VSD Box end only.

Always use shielded, braided, foil wrapped with a
drain wire, 18 AWG maximum, 2-conductor cable no
more than 330 feet (100 meters) in length. Ensure the
braided steel wire is securely connected to a known
good earth ground at both ends. Ensure the internal
drain wire is securely connected to a known good
earth ground at the VSD Box end only.

Failure to protect low voltage pressure signals between
the compressor and VSD Box will result in unstable and/or
erratic pressure readings; resulting in unstable and/or
erratic compressor regulation behavior.

8

9

VSD AND IRPCB COMPRESSOR

ir-PCB

LED 1LED 2

C01 C02 C04

C03

2 4 61 3 5

X01

2 4 61 3 5

#1

V

C05

0V

+V

READY LAMP

RUN

READY

ALARM

C04

CONNECTIVITY

IRPCB COMPRESSOR STATUS MONITORING

An ir-PCB is a requirement for a VSD Box installation.

The ir-PCB is a DIN rail mountable unit designed to be
installed within the compressor control or switchgear
area and connected to the VSD Box using a six-wire cable.

The ir-PCB is used for compressor status monitoring and
in some installations, for remote load/unload or pressure
switch regulation control.

Consult the X8I Interconnect and Application Guide

prior to the installation of the VSD Box and the ir-PCB to
the air compressor.

Consult the X8I Interconnect and Application Guide
prior to the installation of the VSD Box and the ir-PCB to
the air compressor.

The ir-PCB is fitted with a six-pin terminal C04 for
compressor monitoring. The ir-PCB uses three inputs
(Ready, Run and Loaded) to determine compressor status.
All three status-monitoring input signals are required.

READY

The ‘Ready’ connection is intended to indicate that the
compressor is in a ‘started’ state, has no operational
inhibiting fault condition and is ready to respond to VSD
Box regulation without manual intervention.

Ready Input

The ir-PCB uses a 12V to 250V ac/dc input voltage
detection system and universal relay contact control
outputs (250Vac/dc @ 5A maximum). Integrated directly
into the circuits of an air compressor, the ir-PCB avoids
the need for additional relays or remote inputs. The ir-PCB
also acts as an electrical barrier between the compressor
and the VSD Box providing protection and voltage
isolation.

IRPCB COMPRESSOR CONTROL

Consult the X8I Interconnect and Application Guide
prior to the installation of the VSD Box and the ir-PCB to
the air compressor.

When connecting to an VSD, the VSD Box will control the
ir-PCB load/unload relay outputs (terminals C01 and C02)
in accordance with the VSD Box load and unload pressure
set points. The ir-PCB load/unload relay contacts can be
used for compressor that have pressure switch load/
unload regulation as well as those that have digital inputs
for load/unload regulation.

The READY input will accept 12V to 250V ac (50/60Hz) or
dc.

Caution: Do not connect a voltage greater than 250Vac/
dc to this input.

This input must be connected to the terminals of a ‘ready’
or ‘operational’ lamp, or other circuit of the compressor
control system, that will be energized when the
compressor is in started (standby or running) condition.

The voltage to this input must de-energize when the
compressor is stopped and unavailable to produce air
upon a load signal or the Emergency Stop button is
pressed or when the compressor experiences a fault that
prevents the compressor from running.

When the compressor ready lamp, or other control circuit,
is energized the ir-PCB will detect the voltage and signal
the VSD Box that the compressor is ready and available to
load and produce air when a load request signal is given

Note: The ir-PCB input common terminal must always
be connected to the neutral, common or 0V line of the
applied input.

Ready Input, Alternative Connection Method:

F1

+Vac

0Vac

READY

0V

RUN

READY

ALARM

+V

MAIN (LINE) CONTACTOR

C04

0V

+V

MAIN (LINE) CONTACTOR

0V

+V

AUXILIARY SWITCH

RUN

READY

ALARM

C04

In instances where a convenient voltage signal for a

compressor ready condition is not available the ‘Ready’

input can be connected directly to a constant compressor

control system power supply voltage (12V to 250Vac or

dc). This will signal the VSD Box that the compressor is

ready and available at all times when power is applied

to the compressor. The VSD has a built-in function to

determine when a compressor is not responding, or is

in a shutdown condition, regardless of a constant ready

signal. If the VSD Box requests a compressor to run/load,

but fails to detect a RUN signal within 60 seconds, the

VSD Box will regard the compressor as ‘not ready’ and

indicate the compressor as not available. If a RUN signal is

detected at any time, the VSD Box will automatically reset

the compressor ‘not ready’ condition and re-establish

control.

For a fixed speed air compressor this input can be
connected to the control terminals A1 and A2 (coil) of
the main starter contactor of the compressor. When the
compressor control system energizes the main contactor,
the ir-PCB will detect the voltage across the contactor coil
terminals and signal the VSD Box that the compressor is
running

Alternatively, if the main contactor coil voltage is greater
than 250Vac, a contactor auxiliary relay can be used to
apply a suitable voltage to the ‘Run’ input terminals.

For a ‘Variable Speed’ air compressor alternative methods
of determining a running condition may have to be
established.

Safety: Never connect the READY input positive

connection directly to the output of a control system

transformer; always connect after a fuse or circuit breaker.

If a normally closed contact of an Emergency Stop button

is included in the compressor power supply circuit,

connect after the Emergency Stop button contacts. This

will instantly indicate a compressor ‘not ready’ condition if

the Emergency Stop button is activated

RUNNING

The majority of VSD compressors are fitted with a
single main motor contactor but in most instances this
contactor energizes at compressor initialization and
remains energized regardless of motor running. The
following alternative signals may be used to indicate
motor running in most cases:-

1) The ‘Fan’ contactor – in instances where the cooling
fan energizes and de-energizes in conjunction with
the main motor.

2) The compressor controller ‘run’ signal to the ‘Inverter
Drive Unit’; an interface relay may be required.

Note: The ir-PCB input common terminal must always
be connected to the neutral, common or 0V line of the
applied input voltage.

LOADED

ALARM = LOAD

The VSD Box uses the ir-PCB ALARM input to detect the
load condition of the compressor. There is no Alarm
input facility on the ir-PCB when used with a VSD Box.
An auxiliary ‘Alarm’ input terminal within the VSD Box is
available.

The RUN input will accept 12V to 250V ac (50/60Hz) only
(DC can not be used).

Caution: Do not connect a voltage greater than 250V to
this input.

12V to 250Vac must be applied to the ‘Run’ terminals
when the compressor motor is running.

Note: A fault that stops the compressor, and/or prevents
the compressor from running, is determined from the
‘Run’ and ‘Ready’ inputs; Alarm detection is optional and is
not a requirement.

10

11

0V

+V

LOAD
SOLENOID

RUN

READY

ALARM

C04

The LOAD input will accept 12V to 250V ac (50/60Hz) or dc.

RUN

READY

ALARM

C04

Running
0v

1

4

1

6

X04

1

3

1

5

Aux Alarm

Aux Trip

1

4

1

6

X04

1

3

1

5

X05

1

8

2

0

2

2

1

7

1

9

2

1

+

rpm

Auxiliary Trip Input (Option)

The VSD Box is equipped with an auxiliary ‘Trip’ input. The
input can be used to detect a compressor shutdown trip
condition. The input can also be used to monitor other
auxiliary equipment associated with the compressor and
initiate a compressor trip condition.

The Automation System unit will regard the trip as
a compressor shutdown trip and will remove the
compressor from sequence; the compressor will run-on
for the compressor controller’s set run-on time and stop.

Caution: Do not connect a voltage greater than 250Vac/dc to
this input.

Note: The Alarm input can not be directly connected to a Triac
Output, as used on the IntelliSys controller. When connecting
to an IntelliSys controller, an auxiliary relay must be used to
apply a suitable voltage to the ‘Alarm’ input terminals.

The ‘Load’ input can be connected to the terminals of the
compressor’s load solenoid; or other accessible part of the
control circuit that is energized when the compressor is loaded.

Note: The ir-PCB input common terminal must always be
connected to the neutral, common or 0V line of the applied
input voltage.

For a compressor that is not equipped with a load solenoid (a
compressor that is loaded at all times while running) the ‘Load’
input can be connected to the ‘Run’ input.

Auxiliary Alarm Input (Option)

The VSD Box is equipped with an auxiliary ‘Alarm
(Warning)’ input. This input can be used to detect a
compressor ‘Warning’ or ‘Alarm’ condition. The input can
also be used to detect an ‘Alarm’ condition of auxiliary
equipment associated with the compressor.

The Automation System unit will regard the alarm as a
compressor alarm.

As default the auxiliary ‘Alarm’ input is normally open,
Alarm on closed circuit condition. If required this can
be reversed in the VSD Box setup menu to be normally
closed, alarm on open circuit.

As default the auxiliary ‘Trip’ input is normally open,
Trip on closed circuit condition. If required this can be
reversed in the VSD Box setup menu to be normally
closed, trip on open circuit.

Note: The maximum cable length for Auxiliary ‘Alarm’ or
‘Trip’ inputs is 330ft (100m).

Speed Monitoring Input (Option)

The VSD Box is equipped with a ‘speed detection’ input
designed to function with a ‘VSD Speed Monitoring Kit’
(available separately). This optional feature will provide
all required functionality to enable total synergy with the
energy control, VSD compressor aware, functions of an
X8I or X12I.

Remote Outputs

Compressor Running:

The VSD Box is equipped with a volt-free relay contact
output (R5) to indicate when the compressor is detected
as running. The output contacts will close when the
compressor is running.

Group Alarm:

The VSD Box is equipped with a volt-free relay contact
output (R6) to indicate Group Alarm. The Group Alarm
relay contacts are normally closed and will open in the
following conditions:-

1) VSD Box power failure

2) VSD Box internal fault condition

3) Input pressure sensor fault

4) Compressor ‘Not Ready’

3

1

3

2

3

3

3

4

X08

X09

R5

R6

Compressor
Running

Group Alarm

SECTION 6  VSD BOX HARDWARE CONFIGURATION

J1

2 4 6

281027 26 25 24 23 22 21

20 19

9 8 7 6 5

4 3

2 1

18 17 16 15 14 13 12

11

KC-

KC-

8 10 12 14 16 18 20 22 24 26 282930

2725

23

21

19171513

119

7

53

1

31 32 33 34

R06

R05

X07X06X05

X04

X03

X02

X01

X08

X09

VSD/EX

+

2

4

V

D

C

0

V

X01

2 1

RS485

L

1

L

2

X04X05

L

E

D

1

123 3

s

c

r

e

e

n

X02

X03X06

-

A

N

A

1

+

A

N

A

1

VDC

4-20mA(2)

4-20mA(1)

Ao2

2 1

A

N

A

3

+

A

N

A

3

-

2 1

A

N

A

2

+

A

N

A

2

-

#1

#2

C03

C010

PASSIVE MODE

4-20mA(2)

4-20mA(1)

X06 X03

X02

VSD Box Terminal PCB Type Selector

VSD Box Terminal PCB has a jumper on it that determines
the type of control box the PCB is being used in. Check to
determine if jumper (J1), as shown below, is placed in the
correct position for a VSD Box.

Relay contact rating:

CE: 250V @ 5A max

UL: 115V @ 5A max

XPM-Ao2 Module 4-20mA Output Mode Selectors

Remove the top cover of the XPM-Ao2 module and check
the 4-20mA output mode selectors are in the ‘PASSIVE’
mode position. (The default position as shipped from the
factory.)

12

13

VSD Box

XPM-Ao2

Pressure
Transducer

Case Ground

IR-5000

Signal

Signal

+VDC

+VDC

COM

A1

13

60

55

39

+24

- ANA1

+ ANA1

X07

X02

SECTION 7  INGERSOLL RAND TO VSD BOX INTERCONNECT

The following drawing represents the correct method for wiring the VSD Box and Ingersoll Rand Bolt-On VSD’s.

INGERSOLL RAND INTELLISYS CONTROLLED VSD COMPRESSORS TO VSD BOX INTERCONNECT

IN

OUT

LED 4

READY

LED 3

RUN

SEQ CONT

LOAD UNL

LED 5 VFD
LED 2 LOAD
LED 1 SEQ

GND

D11

D12
+20V

ALARM

RUN

READY

IR-PCB

+VDC

COL

ON

HATR
Contact

Restart TD
Relay
Contact

To TR Relay
To M Contact

To 1SV
To 3SV
To 2CR

OFF

E-STOP

SSR UP6 20-30 FV

VFD/fixed

Load Enable
Load/Unload

XCR

XCR

110VAC

110VAC

0 VAC

VSD BOX
X01 TERMINAL

SG SSR

VSD BOX
X01 TERMINAL

SEQ CONT

LOAD UNL

GND

D11

D12
+20V

LED 5 VFD
LED 2 LOAD
LED 1 SEQ

LED 4

READY

LED 3

RUN

VFD/fixed

Load Enable
Load/Unload

IR-PCB

+VDC

OUT

IN

ALARM

RUN

READY

XCR

110VAC

0VAC

To Exixting
Blowdown
Solenoid
2CR Relay

E-STOP

1ATS

Remote Load Enable

Remote Load/Unload

Intellisys SG

INGERSOLL RAND PRESSURE SWITCH CONTROLLED VSD COMPRESSORS TO VSD INTERCONNECT

Consult the X8I Interconnect and Application Guide
prior to the installation of the VSD Box and the ir-PCB to
the air compressor.

14

15

COMPRESSOR

Pressure Set Points

COMPRESSOR

Pressure Set Points

I

m

m

e

d

i

a

t

e

S

t

o

p

P

r

e

s

s

u

r

e

7psi (0.5bar) min

Controlled Stop Pressure

7psi (0.5bar) min

7psi (0.5bar) min

7psi (0.5bar) min

Target Pressure

Unload Pressure

Excess or Alarm Pressure

Target Pressure

Load Pressure

Pressure

Pressure

SECTION 8  COMMISSIONING

It is recommended that installation and commissioning
be carried out by an authorized and trained product
supplier.

Information regarding the compressor control system,
method of operation and regulation settings, is required.
Knowledge of VSD compressor regulation methods,
experience working with compressor control systems and
basic principle knowledge of compressed air systems,
is also required to be able to successfully install and
commission this product.

Physical Checks

Before applying power to the VSD Box ensure that the
power supply connections are correct and secure and
that the operating voltage selector is set correctly for the
power supply voltage in use; 115Vac or 230Vac (+-10%),
50/60Hz; see ‘Installation’.

Check and ensure all pressure sensor, output pressure
signal and ir-PCB connections are correctly installed and
secure.

Compressor Pressure Set Points

Establish the following pressure set point values from the
compressor control system.

NOTE: For fixed speed compressors the ‘target’ pressure
can be set at the mid-point between the compressor
‘load’ and ‘unload’ pressure set points.

4) The maximum Discharge pressure level (and maximum
Internal pressure level if used) set in the compressor
controller. This value will be the Excess or High pressure
Alarm safety level. On fully integrated VSD compressor
controllers this value may be represented as the
‘Immediate Stop Pressure’ level.

Establishing the correct compressor pressure set

point values is critical to successful VSD Box operation.

1) Compressor ‘Load’ pressure set point: The pressure at
which the compressor will start/load.

On 3rd party fully integrated VSD compressor

controllers this value may be represented as the
‘Target Pressure’ level.

2) Compressor ‘Unload’ pressure set point. The pressure
at which the compressor will stop/unload.

On 3rd party fully integrated VSD compressor

controllers this value may be represented as the
‘Controlled Stop Pressure’ level.

3) Compressor ‘Target’ pressure set point.

For 3rd party integrated VSD type compressors this

is the pressure that the variable speed drive is set to
maintain.

This value will generally be the same as the
‘load’ pressure set point for 3rd party variable speed
compressors that have fully integrated VSD control
systems. For Ingersoll Rand Bolt-On VSD compressors,
this value will be the mid-point between the ‘load’ and
‘unload’ pressure set points.

NOTE: If the variable speed ‘target’ pressure is set
separately from the compressor controller (in the variable
speed drive controller menu or using a potentiometer
connected to the variable speed drive controller), then
the compressor controller is not a fully integrated type.
In this instance the ‘target’ pressure may have to be
determined by observation and/or experiment.

NOTE: If the compressor pressure set points have
been set with small differentials then the pressure set
points of the compressor will require adjustment before
proceeding.

NOTE: It is recommended that the pressure differential
between the ‘load’ and ‘unload’ (or ‘target’ and ‘controlled
stop’) pressures is a minimum of 7psi (0.5bar).

NOTE: It is recommended that the pressure differential
between the ‘unload’ and ‘excess’ (or ‘controlled stop’ and
‘immediate stop’) pressures is a minimum of 7psi (0.5bar).

VSD Box Configuration

Output Pressure Signal Calibration

Apply power to the VSD Box.

If the VSD Box automatically starts (the green started
indicator illuminates or flashes) press the STOP button.

Using the VSD Box menu routines, set the ‘IC’ (I/O
Configuration - Type) in menu P03 to the correct setting
for the pressure sensor input/output configuration.

VSD Box Network Address

Each VSD compressor connected to the Automation
System unit must be assigned a unique compressor
identification number (1 to the maximum number of
compressors). This number will be the ‘network address’
number for the compressor. The number should be clearly
marked on the compressor for identification purposes.

When connecting a compressor(s) to the VSD Box, always
use the Automation System unit’s unique identification
number as the compressor ‘network address’ number.

Using the VSD Box menu routines, set the ‘Ad’ (Network
Address) in menu P03 to the Automation System unit’s
compressor identification number.

Input Pressure Sensor(s)

The offset and range of the pressure sensor(s) used on
the compressor must be established for VSD Box pressure
sensor calibration. Generally this information is indicated
on the pressure sensor label.

The correct ‘offset’ and ‘range’ values of each pressure
sensor are required for VSD Box ‘input’ pressure sensor
calibration.

Using the VSD Box menu navigation procedure, select
menu page P05 (Output Pressure Calibration). The ‘items’
of this menu enable calibration of the pressure signal(s)
transmitted to the compressor controller.

Pressure Set Points

Establishing and implementing the correct pressure

set points is critical for successful VSD Box operation.

Using VSD Box menu navigation, select menu page P03
(Configuration).

1) Set the ‘Dm’ (Discharge Pressure Maximum Limit) to
the compressor’s ‘Excess Discharge Pressure Alarm’ or
‘Immediate Stop’ pressure setting.

2) If an ‘Internal’ pressure sensor is in use set the
‘Im’ (Internal Pressure Maximum Limit) to the
compressor’s ‘Excess Internal Pressure Alarm’
pressure setting. Typically this value will be at least
12psi (0.8bar) above the excess or alarm ‘discharge’
pressure limit.

Using VSD Box menu navigation, select menu page P01
(Pressure Set Points).

1) Set the ‘Pu’ (Unload) pressure set point to the
compressor’s ‘Unload’ or ‘Controlled Stop’ pressure
set point value.

2) Set the ‘Pt’ (Target) pressure set point to the ‘target’
pressure setting established for the compressor.

3) Set the ‘PL’ (Load) pressure set point to the
compressor’s ‘Load’ or ‘Target’ pressure set point
value.

The main value display should show a pressure value; for
example 0.0 bar. If the display shows dashes (- - - -) check
the ‘Discharge‘ pressure sensor connections.

Note: Wire polarity is important.

If an ‘Internal’ pressure sensor is in use press DOWN to
view the ‘P2’ pressure value in the User menu ‘items’
display. The ‘P2’ value display should show a pressure
value; for example 0.0 bar. If the display shows dashes (- -

- -) check the ‘Internal‘ pressure sensor connections.

Note: Wire polarity is important.

At this stage the displayed pressure values will probably
be incorrect; this is normal.

Calibrate the input ‘Discharge’ pressure sensor, and input
‘Internal’ pressure sensor if used, following the input
‘Pressure Sensor Calibration’ procedure below:

Input and Output pressure calibration is critical for

successful VSD Box operation.
Input Pressure Sensor Calibration

Using the VSD Box menu navigation procedure, select
menu page P04 (Input Pressure Calibration). The ‘items’
of this menu enable calibration of the pressure sensor(s)
connected to the VSD Box.

16

17

SECTION 9  DISPLAY AND MENU OPERATION

MENU NAVIGATION

Display Item Structure:

All value, parameter or option selection displays are
grouped into menu lists. Items are assigned to a list
according to type and classification. Items that can be
used to select options or modify functions are assigned to
‘menu mode’ lists. Items that a User may require to view
during routine operation, detected pressure for example,
are assigned to the normal operational mode list. Lists are
identified by page number; the normal User display list
is page ‘P00’. All parameters and options are assigned to
menu mode pages ‘P01’ or higher. All Page ‘P00’ items are
view only and cannot be adjusted.

Normal Operational Mode (Page P00):

At controller initialization, all display elements and LED
indicators are switched on for three seconds, the display
will then show the software version code for a further
3 seconds before initialization is complete and the
normal operating display (Page P0) is shown. In page
P00 ‘normal operational display mode’ the main display
will continuously show the detected delivery pressure
and the Item display will show the first item of the ‘User’
menu. User menu ‘Items’ can be selected using the Up or
Down buttons at any time. Pressing the Enter button will
lock any selected Item display and inhibit return to the
default display. When an Item display is locked the lock
key symbol will slow flash. To unlock an Item display press
Up or Down to view an alternative Item display or press
Reset or Escape. No Item values, options or parameters
can be adjusted in page ‘P00’. If a fault condition occurs
the fault code becomes the first list item and the display
will automatically jump to display the fault code. More
than one active fault code item can exist at any one time.

Access Code:

Access to page list displays higher than page ‘P00’ is
restricted by access code. To access menu mode pages
press MENU, an access code entry display is shown and
the first code character will flash. Use PLUS or MINUS to
adjust the value of the first code character then press
ENTER. The next code character will flash; use UP or
DOWN to adjust then press ENTER. Repeat for all four
code characters.

Access Code Timeouts:

When in menu mode, if no key activity is detected for a
period of time the display will automatically reset to the
normal operational display; Page ‘P00’.

Menu Mode Navigation:

In menu mode the main value display will flash and show
the Page number. To select a page press UP or DOWN. For
each page the display will show the first Item of the page
list. To view a page list press ENTER, the Page number
will stop flashing and the Item display will flash. Press UP
or DOWN to view the selected page list items. To select
an Item value for modification, press ENTER. The Item
display will stop flashing and the Value display will flash.
The value or option can now be modified by pressing
UP(Plus) or DOWN(Minus). To enter a modified value
or option in memory press, ENTER. Alternatively, the
modification can be abandoned and the original setting
maintained by pressing ESCAPE.

Press ESCAPE at any time in menu mode to step
backwards one stage in the navigation process. Pressing
ESCAPE when the page number is flashing will exit menu
mode and return the display to normal operational mode;
page ‘P00’.

Press and hold RESET for two seconds at any time

to immediately exit menu mode and return to the
normal operational mode display. Any value or option
adjustment that has not been confirmed and entered
into memory will be abandoned and the original setting
maintained

A flashing Key symbol displayed with any Item

indicates the Item is locked and cannot be modified. This will
occur if the Item is view only (non adjustable) or in instances
where the item cannot be adjusted while the EX Box is in
‘Remote Mode’.

If the code number is less than 1000 then the first code
character will be 0(zero). To return to a previous code
character press ESCAPE. When all four code characters
have been set to an authorized code number press
ENTER. An invalid code will return the display to normal
operational mode; page ‘P00’.

Menu Items and Settings

MENU P00 - User

1 P1 Discharge Pressure - Output (view only)
2 P2 Internal Pressure - Output (view only)
3 SP Percent Speed (view only)

MENU P01 - Pressure Set Points

1 Pu Unload Pressure
2 Pt Target Pressure
3 PL Load Pressure

MENU P02 – Error Log

1 Hr VSD Box Operating Hours
2 01 Error Log #1

to

16 15 Error Log #15

MENU P10 – Unit Configuration

1 D7 Aux Alarm Input Configuration
2 D8 Aux Trip Input Configuration
3 SQ ir-PCB Sequence control hold
4 Ao Analog Output Function (4-20mA)
5

Er Error Log Reset

6 Hr VSD Box Operating Hours Adjust

MENU P16 – Analog Output Diagnostic

See ‘Diagnostics’

Note: Menus P07, 9 and 11 to 15 are not used.

Access Code = 0021

MENU P01 - Pressure Set Points

MENU P03 - Configuration

1 P> Pressure Units Select
2 Ad Network Address (Compressor No.)
3 PA Pressure Averaging Factor
4

IC I/O Configuration (Type)
5 DM Discharge Pressure Maximum Level
6 Im Internal Pressure Maximum Level

MENU P04 – Input Pressure Calibration

1 Do Discharge Pressure ‘Offset’
2 Dr Discharge Pressure ‘Range’
3

Io Internal Pressure ‘Offset’
4 Ir Internal Pressure ‘Range’

MENU P05 – Output Pressure Calibration

1 Do Discharge Pressure ‘Offset’
2 Dr Discharge Pressure ‘Range’
3

Io Internal Pressure ‘Offset’
4 Ir Internal Pressure ‘Range’

MENU P06 / Diagnostics

See ‘Diagnostics’

Pu: Unload Pressure

Compressor ‘Unload’ pressure set point: The pressure
at which the compressor will stop/unload. On fully
integrated VSD compressor controllers this value may be
represented as the ‘Controlled Stop Pressure’ level. Set
the ‘Pu’ (Unload) pressure set point to the compressor’s
‘Unload’ or ‘Controlled Stop’ pressure set point value.

Pt: Target Pressure

Compressor ‘Target’ pressure set point. For VSD type
compressors this is the pressure that the variable speed
drive is set to maintain. Set the ‘Pt’ (Target) pressure set
point to the ‘target’ pressure setting established for the
compressor.

PL: Load Pressure

Compressor ‘Load’ pressure set point: The pressure
at which the compressor will start/load. On fully
integrated VSD compressor controllers this value may
be represented as the ‘Target Pressure’ level. Set the ‘PL’
(Load) pressure set point to the compressor’s ‘Load’ or
‘Target’ pressure set point value.

Establishing and maintaining the correct pressure set
point values (Pu, Pt and PL ) is critical to the successful
operation of VSD Box control functions.

See ‘Commissioning - Pressure Set Points’

MENU P02 - Error Log

MENU P08 – Speed Monitoring

1 FL Frequency at Minimum Speed
2 FH Frequency at Maximum Speed
3

C< Control Percentage (view only)

The first item of the log error menu is the VSD Box
operational hours (Hr). This is an indication of the
accumulated hours the VSD Box has been operational
and is used to time-stamp fault codes in the error log. The
hours counter has no other function.

The VSD Box operating hours counter is NOT intended
as a measure of compressor operation or running
hours; the hours counter will differ from, and operate
independently from, the compressor hours counter.

18

19

Each error log item will show the fault code alternating
with the VSD Box operational hours when the fault
occurred. The error log stores the last 15 faults in
chronological order; item ‘01’ is the most recent fault.

MENU P03 – Configuration
P>: Pressure Units Select

Selects the display pressure units (bar, psi or kPa)

Im: Internal Pressure Maximum Level

If the detected Internal pressure input exceeds this
setting ‘Pressure Control’ is disabled and the detected
Discharge and Internal pressure is transmitted directly
to the compressor controller without alteration. This is
intended as a safety feature that will allow the safety
functions of the compressor controller to respond to
excess pressure situations.

Ad: Network Address

Network address; must be set to the compressor
identification number used by the Automation System
unit for the compressor (1 to the maximum number of
compressors). Each compressor in a system must have a
unique identification number.

PA: Pressure Averaging Factor

Pressure corrections supplied by the Automation System
unit are averaged to prevent abrupt changes and
enable smooth and controlled pressure adjustments.
The Automation System updates pressure information
approximately every two seconds. The ‘Pressure
Averaging Factor’ is the number of previous pressure
corrections that are used for averaging. For example:
a factor of ‘2’ will average the most recent pressure
correction value received with the previous two values
received.

If system volume is large and/or pressure variations are
slow a higher ‘Pressure Averaging Factor’ can be used to
dampen response and smooth control pressure changes.
If system volume is small and/or pressure variations are
fast a lower ‘Pressure Averaging Factor’ should be used
to enable a faster response. In some instances pressure
differential across air treatment and/or small diameter
pipe work can result in sudden and abrupt changes in
detected pressure.

A higher ‘Pressure Averaging Factor’ can be used to
dampen this effect.

IC: I/O Configuration (Type)

Determines the pressure detection and pressure output
signal configuration.

‘1’ – Discharge pressure 4-20mA input with associating
discharge pressure 4-20mA output. Internal pressure is
ignored.

‘2’ – Discharge pressure 4-20mA input and Internal
pressure 4-20mA input with associating 4-20mA outputs.

‘3’ – 0.5V to 4.5V Discharge pressure input with
associating 0.5V to 4.5V output.

Internal pressure is ignored.

Dm: Discharge Pressure Maximum Level

If the detected Discharge pressure input exceeds this
setting ‘Pressure Control’ is disabled and the detected
Discharge pressure (and Internal pressure if in use) is
transmitted directly to the compressor controller without
alteration. This is intended as a safety feature that will
allow the safety functions of the compressor controller to
respond to excess pressure situations.

Note: Internal compressor pressure will increase over time
with an increase in air/oil separator element differential
and will generally be 0.8bar (12psi) above discharge
pressure.

MENU P04 – Input Pressure Calibration
Do: Discharge Pressure Offset

This parameter will be the minimum value of the pressure
transducer, 0 PSI, 0 BAR, or 0 kPA. It can also be used to
create an ‘Offset’ if there is a difference in the zero value
being displayed. The default setting for this parameter is
0 PSI. The values for this parameter are:

“0” when using the minimum value of the pressure
transducer range

A value greater than or less than 0 if the display
does not read 0 or when using an Offset pressure
transducer (an example of an Offset pressure
transducer would be one where the range was minus
PSI (-25) to a positive PSI (200).

The pressure transducer must be vented to
atmosphere when setting the 0 or offset.

Dr: Discharge Pressure Range

This parameter will be the maximum range of the
pressure transducer, 232 PSI, 16 BAR, or 1600 kPA. It can
also be used to create an ‘Offset’ if there is a difference in
the range value being displayed. The default setting for
this parameter is 232 PSI. The values for this parameter
are:

“232” when using the maximum value of the
pressure transducer range

A value greater than or less than 232 if the display
does not read 232.

The pressure transducer must have a known,
accurate pressure applied to it when changing
this value to a value other than 232.

Calibration Checks

When the ‘Discharge’ pressure sensor offset and range
menu items are selected the menu page display value will
change to show the actual detected ‘Discharge’ pressure
measurement. This value can be used to compare with
a ‘known’ pressure applied to the ‘Discharge’ pressure
sensor for accurate calibration purposes. An independent
and accurate means of measuring the applied pressure is
required.

1) Subject the ‘Discharge’ pressure sensor to
atmosphere 0psi (0bar).

2) Adjust the ‘Do’ pressure ‘offset’ value until the
‘Discharge’ pressure displayed by the VSD Box shows
0psi ((0) bar.

3) Apply a known pressure to the ‘Discharge’ pressure
sensor. It is recommended that the applied pressure
is representative of normal working pressure levels.
It is not important if the applied pressure is static or
continuously fluctuating.

4) Adjust the ‘Dr’ pressure ‘range’ value until the
‘Discharge’ pressure displayed by the VSD Box shows
the same as the ‘known’ applied pressure.

The detected pressure is displayed with the
calibration menu item and will change to match the new
calibration setting as the setting is adjusted.

1) Subject the input ‘Discharge’ pressure sensor to
atmosphere 0psi (0bar).

2) Adjust the ‘Do’ pressure signal ‘offset’ value until the
compressor controller’s discharge pressure display
value shows 0psi (0) bar.

3) Apply a known pressure to the input ‘Discharge’
pressure sensor. It is recommended that the applied
pressure is representative of normal working
pressure levels. It is not important if the applied
pressure is static or continuously fluctuating.

4) Adjust the ‘Dr’ pressure signal ‘range’ value until the
compressor controller’s discharge pressure display
value shows the same as the VSD Box discharge
pressure.

Io: Internal Pressure Offset

Use the same procedure as described for Do: to set the
Offset for Io:

Ir: Internal Pressure Range

There is no need for the applied pressure to be static;
it can be dynamic and changing. This enables calibration
to be carried out on a fully operational system where
changing system pressure can be accurately verified from
another source.

Correct pressure sensor set-up and calibration
is critical for successful system operation. It is
recommended that pressure sensor calibration is
examined, and adjusted if necessary, annually or a pre­determined routine periodic basis.

Io: Internal Pressure Offset

Use the same procedure as described for Do: to set the
Offset for Io:

Ir: Internal Pressure Range

Use the same procedure as described for Dr: to set the
Offset for Ir:

Follow the same procedure described above for Do: and
Dr: Calibration Checks for applying adjustments to the
‘Io’ (Internal offset) and ‘Ir’ (Internal range).

MENU P05 – Output Pressure Calibration
Do: Discharge Pressure Offset

Enter the ‘OFFSET’ value for the ‘Discharge’ pressure signal
in the ‘Do’ menu item. Set this value will to same as the
initial ‘Discharge’ pressure sensor input ‘offset’.

Dr: Discharge Pressure Range

Enter the ‘RANGE’ value for the ‘Discharge’ pressure signal
in the ‘Dr’ menu item. Set this value to the same as the
initial ‘Discharge’ pressure sensor input ‘range’.

Calibration Checks

When the output ‘Discharge’ pressure signal offset and
range menu items are selected the menu page display
value will change to show the actual detected input
‘Discharge’ pressure measurement. This value represents
the pressure the VSD Box is attempting to transmit to the
compressor controller and can be used to compare with
the compressor controller’s displayed pressure value.

Use the same procedure as described for Dr: to set the
Offset for Ir:

Follow the same procedure described above for Do: and
Dr: Calibration Checks for applying adjustments to the
‘Io’ (Internal offset) and ‘Ir’ (Internal range).

Input and Output pressure calibration is critical to
the successful operation of VSD Box functions and must
be examined, and adjusted if necessary, periodically on a
routine basis.

MENU P08 – Speed Monitoring
FL: Frequency at Minimum Speed

Used for optional ‘Speed Monitoring Kit’ if fitted. Must be
set to 0(zero) if speed detection is not in use.

Note: Intended for inverter drive variable speed type
compressors.

The inverter drive output frequency at the compressor’s
minimum operating speed.

When this menu item is selected the menu page
number display will change to show the actual detected
frequency. By restricting the output air from the
compressor the compressor inverter drive can be forced
to minimum speed. Set the value to the lowest frequency
detected.

The frequency setting must represent the lowest
inverter drive output frequency that will occur in normal
operation.

FH: Frequency at Maximum Speed

Used for optional ‘Speed Monitoring Kit’ if fitted. Must be
set to 0(zero) if speed detection is not in use. Intended for
inverter drive variable speed type compressors.

The inverter drive output frequency at the compressor’s
maximum operating speed.

20

21

When this menu item is selected the menu page
number display will change to show the actual detected
frequency. By creating a demand for air the compressor
inverter drive can be forced to maximum speed. Set the
value to the highest frequency detected.

The frequency setting must represent the maximum
(100%) inverter drive output frequency that will occur in
normal operation.

C>: Control Percentage

This menu item value is view only and cannot be
adjusted. The value represents the variation in inverter
drive output frequency; where 0% is minimum speed and
100% is maximum speed.

Note: The ‘Control Percentage’ value represents the
percentage of speed variation from minimum speed to
maximum speed and differs from the ‘User’ menu percent
motor speed value. This value is used internally by the
VSD Box for Automation System unit functions and is
only active when an optional ‘Speed Monitoring Kit’ is
installed.

MENU P10 – Unit Configuration
D7: Auxiliary Alarm Input Configuration

‘0’ – Disabled

‘9’ – Detected Discharge pressure

‘10’ – Detected Internal pressure

Er: Error Log Reset

Adjust to ‘RST’ and press ENTER to clear and reset the
‘Error Log’ menu.

Hr: VSD Box Operating Hours Adjust

Allows adjustment of the VSD Box operating hours
counter. The accumulated hours counter is used for ‘Error
Log’ time-stamp only and has no other function.

Determines the input configuration for the auxiliary
Alarm input:

‘0’ – Normally open, Alarm when closed

‘1’ – Normally closed, Alarm when open

D8: Auxiliary Trip Input Configuration

Determines the input configuration for the auxiliary Trip
input:

‘0’ – Normally open, Trip when closed

‘1’ – Normally closed, Trip when open

SQ: ir-PCB Sequence Control Hold

If using the ir-PCB load relay output on a remote
digital input pressure control, or pressure switch, type
compressor controller, it may be desirable to maintain
VSD Box load/unload control of the compressor when the
VSD Box is stopped.

If this item is set to ‘1’ the VSD Box will continue to load
and unload the compressor, in accordance with the set
VSD Box ‘load’ and ‘unload’ pressure set points, at all times.

If set to ‘0’ (Default) the VSD Box will deactivate remote
pressure control (SEQ) and/or re-introduce the pressure
switch, when the VSD Box is stopped. The compressor will
operate in ‘local’ pressure control mode.

Ao: Analog Output Function

The VSD Box controller is equipped with a 4-20mA
auxiliary output. The output can be used to remotely
signal the selected analog value.

SECTION 10  DIAGNOSTICS

The VSD Box controller is equipped with comprehensive
diagnostic functions. Each input can be examined
individually and each output can be manually activated
or manipulated individually.

Controller Diagnostics:

Menu P06 - Diagnostics

D1 Digital Input 1
D2 Digital Input 2 ON
D3 Digital Input 3
D4 Digital Input 4
D5 Digital Input 5
D6 Digital Input 6
D7 Digital Input 7
D8 Digital Input 8

---------------------------------------------------------------------------

R1 Relay Output 1

R3 Relay Output 3
R4 Relay Output 4

R6 Relay Output 6

---------------------------------------------------------------------------

A1 Analog Input 1 bar <> mA
A2 Analog Input 2 bar <> mA
A3 Analog Input 3 bar <> +VDC

---------------------------------------------------------------------------

Ao Analog Output 1 4.0 to 20.0mA

Digital Inputs:

D2 and D6 (connected to the ir-PCB) are the only digital
inputs that will detect a pulsing signal.

D2: ir-PCB Compressor Ready/Run Status

OFF Not Ready

OFF

Pulsing

OFFR2 Relay Output 2

ONR5 Relay Output 5

Relay Outputs:

Each relay output can be energised and de-energised
manually by selecting the item. Use PLUS and MINUS to
adjust and ENTER.

Analog Inputs:

The item will alternate between the detected value and
the electrical measurement on the input terminals. An
independent measuring device can be used to check the
displayed electrical measurement.

A1: Discharge Pressure 4-20mA

A2: Internal Pressure 4-20mA

A3: Discharge Pressure 0.5-4.5VDC

Analog Output:

The output can be manually adjusted by selecting the
item. Use PLUS and MINUS to adjust and ENTER. The
output will return to normal operational value upon
menu exit.

XPM-Ao2 Module Diagnostics:

MENU P16 / XPM-Ao2 Diagnostics

A1 Analog Output 1 4-20mA #1
A2 Analog Output 2 4-20mA #2
A3 Analog Output 3 0.5-4.5VDC

Analog Outputs:

Each output can be manually adjusted by selecting the
item. Use PLUS and MINUS to adjust and ENTER. The
output will return to normal operational value upon
menu exit.

A1: Discharge Pressure 4-20mA

A2: Internal Pressure 4-20mA

A3: Discharge Pressure 0.5-4.5VDC

ON Ready

Pulsing Running

D3: ir-PCB Compressor Load/Maintenance

OFF Alarm (unless reversed in menu)

ON OK (unless reversed in menu)

Pulsing Service Maintenance

The pulse signal is 24VDC at 50/60Hz. A DC voltage meter
will detect this as 12VDC +-4V.

22

23

SECTION 11  OPERATION

a

b

c

d

f

g

h

e

psi

A

C

B

KEYPAD

Start

a.

Reset

b.

Stop

c.

Menu

d.

Enter

e.

Escape (Cancel)

f.

Up (Plus)

g.

Down (Minus)

h.

DISPLAY

Flashing - Not Responding, Compressor Not
Running When Required

Flashing - Not Responding, Compressor Not
Loading When Required

Service Maintenance function active

Discharge Pressure or Internal Pressure has
exceeded the maximum set limit

Compressor Not Ready

Fault, Auxiliary Input Alarm/Trip

Pressure Control OFF or inhibited

Load Request to compressor

Unload Request to compressor

Pressure Control Active

INDICATORS

Run Indicator (Green LED)

OFF - Pressure Control Off, Stopped
Flashing - Pressure Control ON, waiting for

compressor to respond
ON - Pressure Control On, Started

Fault Indicator (Red LED)

OFF – No fault
Flashing – VSD Box Fault Condition (see Fault

Codes)

The primary display value (A) will continuously show the
detected ‘Discharge’ pressure. The pressure is derived
from the compressor ‘Discharge’ pressure sensor and the
displayed value is not manipulated or adjusted.

The compressor controller ‘Pressure Display’ may
not represent the actual true local pressure(s) when VSD
Box ‘Pressure Control’ is active. Use the VSD Box ‘Input’
pressure display(s) for local pressure reference.

The ‘User Menu’ item display (B) will show the selected
user menu item. Press UP or DOWN to scroll through the
display ‘items’ list.

Status Symbols

The Status display will continuously show the current
state of the VSD Box (C) by using the following icons.

Power Failure Auto Restart (always on)

Communicating with System Management
Controller

Flashing - No Communications with System
Management Controller

Compressor Running

Compressor Loaded

The VSD Box will report that the compressor is ‘Not
Available’ to the Automation System controller when the
VSD Box is in a stopped or fault condition.

Start

Press START to activate VSD Box pressure control. The run
indicator (9) will illuminate or flash.

The compressor must be in a started state (running or

in standby) before VSD Box pressure control will function.

When started the VSD Box will begin to manipulate the
pressure signal(s) to the compressor controller – ‘Pressure
Control’ is active.

Pressure Control will de-activate automatically
if communications with the system management unit is
disrupted or not connected; the detected pressure from
the pressure sensor(s) is re-transmitted to the compressor
control directly

VSD Box will automatically re-activate ‘Pressure Control’.

When communications are re-established the

Stop

Percentage Motor Speed:

Press STOP to de-activate VSD Box pressure control. The
run indicator (9) will extinguish.

When stopped the VSD Box will not manipulate or adjust
the pressure signal(s) to the compressor controller; the
detected pressure from the pressure sensor(s) is re­transmitted to the compressor control directly.

The VSD Box will report that the compressor is ‘Not
Available’ to the system management unit when the VSD
Box is in a stopped condition.

Note: During compressor service or routine maintenance
the VSD Box can be stopped to return the compressor to
normal local pressure regulation.

Compressor Status

The detected status of the compressor is indicated by the
VSD Box display status symbols (see Status Symbols)

VSD Box Status

VSD Box operation is indicated by the ‘Run’ LED indicator
(see Indicators). Pressure Control status is indicated by the
‘pressure’ status symbols (see Status Symbols).

USER MENU ITEMS

To view the ‘User Menu Items’ press UP or DOWN. The
‘Item’ display value will scroll through the available items.

P1 ‘Discharge’ output pressure transmitted to the
compressor controller.

The percentage of detected motor speed compared
to maximum motor speed. This value provides a
direct indication of variable speed compressor output
regulation.

VSD Box Status:

The central ‘item’ display value (B) is the compressor
system identification number (network address number).
This is the same as the compressor system identification
number shown on the system management unit.

The ‘right hand’ display value indicates the VSD Box status
condition (see Status Block Diagram).

POWER FAILURE AUTORESTART

Power failure auto restart is always active and cannot be
de-activated.

The VSD Box will re-start if the VSD Box was in an
operational started status before the break or failure of
the main power supply occurred.

The VSD Box will not re-start if it was not in an operational
started status before the break or failure of the main
power supply occurred.

Fault Codes

If a VSD Box fault, or auxiliary input fault, occurs the ‘Item’
display will show a fault code:

0080E Auxiliary Input Shutdown Trip

P2* ‘Internal’ output pressure transmitted to the
compressor controller.

SP** Percent motor speed

C> VSD Box Status

(*) The ‘Internal’ output pressure item is only shown if the
‘Internal’ pressure control function is activated (IC = 2).

(**) The percentage motor speed item is only shown
if a ‘Speed Monitoring Kit’ is fitted and the function is
activated (Menu P08).

Discharge Output Pressure:

The discharge output pressure is manipulated during
‘Pressure Control’ and will differ from the actual ‘Input
Discharge’ pressure displayed as the main display value.
Pressure control function can be observed by comparing
the ‘Output’ discharge pressure with the actual detected
‘Input’ discharge pressure. The two pressures will be
identical when ‘Pressure Control’ is not active.

Internal Output Pressure:

The internal output pressure is manipulated during
‘Pressure Control’ to simulate and maintain the actual
detected differential between the ‘Input’ discharge
pressure and the ‘Input’ Internal pressure. This
functionality allows compressor controller differential
pressure monitoring functions to be maintained
regardless of VSD Box output pressure signal
manipulation.

0115E 4-20mA Discharge P. Sensor Fault
0125E 4-20mA Internal P. Sensor Fault
0135E 4.5VDC Discharge .P. Sensor Fault
0821E Short Circuit Condition Detected

Check all inputs and outputs.
0845E S1 Controller Communications with XPM-Ao2

unit disrupted
2070A Auxiliary Input Alarm

Press RESET to reset the fault code display when the fault
condition is resolved.

24

25

SECTION 12  PARTS LIST

20mm

5mm

IEC

3
2
1

24mm

238mm

24mm

188mm

8mm Ø

236mm

286mm

Item Part No. Description

- 42659417 Kit, VSD Box

- 23242225 Unit, VSD Box

- 80444086 Manual, User CD

1 42659490 Controller, VSD
2 42659284 Unit, XPM-PSU24
3 23242282 Unit, XPM-Ao2
4 39265913 Unit, XPM-TAC24
5 23242993 PCB, Terminal VSD
6 38036703 Gland, Set - Pg13.5
7 39265921 Unit, ir-PCB

6

XPM-Ao2

XPM-PSU24

4

5

Optional Accessories:

Item Part No. Description

8 39265939 Sensor, Pressure

4-20mA, 0-16.0bar

Qty Part No. Description

10 39265962 IEC Fuse T1.0A
10 39265970 IEC Fuse T1.6A
10 39265988 IEC Fuse T3.15A

SECTION 13  TECHNICAL DATA

Dimensions 11.45” x 9.45” x 6.0”

291mm x 241mm x 152mm
Weight 14Ib (6.5kg)
Mounting wall, 4 x screw fixings
Enclosure IP54, NEMA 12
Supply 230Vac +/- 10%

115Vac +/- 10%
Power 50VA
Temperature 0°C to 46°C (32°F to 115°F)
Humidity 95% RH non-condensing

7

ir-PCB

8

SECTION 14  WIRING DIAGRAM

x

o
B

D
S
V

r
lle

o

r

t
n
o

C
1

S

2

0
X

+VDC

5
R

6
R

Ai1

5

+VDC

0
X

Ai2

A-GND

Ai3

A-GND

6

o

0

A

k

r

m

o

e

t

tw

s

e

y
S

N

1

2

L

L

5
8

7

i4

0

lt
u

X

M

1

#

1

5

L

8

4

2
L

S

R

X

+
C

1
2
3

4

4

0
X

5
6
7
8

C023

C035

C036
C037
C038
C039
C040

C034

C033

C032
C031
C030
C029
C028
C027
C026
C025
C024

1

2

3

4

4

3
3

3
2

3
1

3

0

3

9

2

8

2

7

2

6

2

5

2

4

2

3

2

2

2

1

2

0

2

9

1

8

1

7

1

9

0
X

8

0

7

0
X

6

0
X

5

0
X

R6

R6
R5

R5

+

Ai3

-

-

Ai2

+

-

Ai1

+

+

Ao

-

A-GND

Di5
+C

Speed Signal

Di4
+C
Di3
+C

Group Alarm

Compressor
Running

0.5 to 4.5VDC
Delivery P. < IN

4-20mA
Internal P. < IN

4-20mA
Delivery P. < IN

8

0
X

5
8
4

M
P
X

1
0
X

1

1

N

L

N

L

230Vac 10%
115Vac 10%

+C

Di7

4

0
X

+C
Di8

R2

3

0
X

GND

R1
R3

2

0
X

GND
GND

+

Di2

1 X

Di6

0
X

-

R4

R1

1

J

-

6

0.5-4.5VDC

0
X

Delivery P. > OUT

+

-

3

4-20mA

0
X

Internal P. > OUT

+

-

2

4-20mA

0
X

Delivery P. > OUT

+

Aux Alarm

Aux Trip

SEQ

+20VDC
Ready/Run

Load/Service
GND

LOAD
SEQ

B
C
P

i-

Ao3

Ao2 +

Ao1 +

6

1

5

1

4

1

3

1

2

1

1

1

0

1

9

8

7

6

5

4

3

2

1

2
1

2
1

2
1

3

0

2

#

1

5

L

8

4

2
L

S

R

c
a
V
4
2

2

2
0
X

2

E

E

E

X

1
R

2
R

3
R

4
R

C041

4

2

3

C

0

2

A

X

T

­M

P
X

1

3

c

2

1

a

0

V

X

4

1

2
C

2

2

D

0

V

X

1

4
2

1
0
X

4

2
U
S
P

­M

P
X

c
a
V
4
2

c
a
V
0

C044

C045

C046

C047

C048

C049

C042

C043

10k

A-GND

2

C

2

-

D
V
4

1

+

2

1

1

L
2

2

L

3

M

o

P

1
0
X

5
0
X

A

X

0

E

1

V

0

I

C

S

&

S

3

A

0

P

C

26

27

XPM-TAC24

XPM-Ao2 (Analog Output)

XPM-PSU24 (24Vac to 24VDC)

+

2

4

V

D

C

0

V

X01

2 1

RS485

L

1

L

2

X04

X05

L

E

D

1

123 3

s

c

r

e

e

n

X02

X03X06

-

A

N

A

1

+

A

N

A

1

VDC

4-20mA(2)

4-20mA(1)

Ao2

2 1

A

N

A

3

+

A

N

A

3

-

2 1

A

N

A

2

+

A

N

A

2

-

#1

#2

C010

ACTIVE

PASSIVE

X03

4-20mA(2)

C03

ACTIVE

PASSIVE

X02

4-20mA(1)

-

+

-

PASSIVE MODE

0VDC

­+

+

-

+12-30VDC

ACTIVE MODE

XPM-Ao2

500R

max

+

-

+

-

+24VDC

0VDC

500R
max

+24VDC

LED 1

LED 2

PSU24

3

2

2

4

V

a

c

0

V

a

c

X01

1

1

2

+

2

4

V

D

C

X02

1

2

X03

1

2

0

V

D

C

X04

+ - + - + -

1

2

X05

L

E

D

1

+-

L

E

D

2

+

8

V

D

C

0

V

D

C

230V
115V

24Vac/1
isolated

24Vac/2

earthed

EE

L

N

N L E

BLUE

BROWN

RED

GREEN

VIOLET

WHITE

ORANGE

BLACK

FH1

FH2

FH3FH4

FH5

1

VOLTAGE SELECT

2 3 4

X04

2 1 2

X03

X02

X01

T3.15A

T1.6A

T1.6A

T1.0A

T1.0A

1 2 3 4

115V +-10%

230V +-10%

1 2 3 4

IEC

5x20mm

SECTION 15  COMMISSIONING FORM

psi cfm Kpa

VA

Hz

kW

COMMISSIONING FORM

Customer Contact Customer Ref:

Phone Internal Ref:

Installation/Site Commission Date
Software Ser No. Commission Engineer

Manufacturer
Model/Type

Working Pressure psi/bar/Kpa
Full Load Capacity cfm

Minimum Load Capacity** cfm
Full Load Power
Minimum Load Power** kW
Voltage V

** variable speed/regulation

Full Load Current (FLC) A
Frequency Hz

P01 Pu Unload Pressure Set Point psi/bar/Kpa
P01 Pt Load Pressure Set Point psi/bar/Kpa
P01 PL Load Pressure psi/bar/Kpa

P03 P> Pressure Units
P03 Ad Network Address (Compressor No.)
P03 PA Pressure Averaging Factor
P03 IC I/O Configuration (Type)
P03 Dm Delivery Pressure Maximum Limit psi/bar/Kpa
P03 Im Internal Pressure Maximum Limit psi/bar/Kpa

P04 Do Delivery Pressure ‘Offset’ psi/bar/Kpa
P04 Dr Delivery Pressure ‘Range’ psi/bar/Kpa
P04 Io Internal Pressure ‘Offset’ psi/bar/Kpa
P04 Ir Internal Pressure ‘Range’ psi/bar/Kpa

P08 FL Frequency at Minimum Speed Hz
P08 FH Frequency at Maximum Speed Hz

P10 D7 Auxiliary Alarm Input Configuration
P10 D8 Auxiliary Trip Input Configuration
P10 SQ ‘i-PCB’ Sequence Control Hold
P10 Ao Analogue Output Function (4-20mA)

bar psi kpa

1 2 3

NO NC
NO NC
0 1
0 9 10

28

Ingersoll Rand

Instruktionsmanual

System Automatisering

VSD boks

Inden enheden installeret eller opstartes første gang, bør
denne manual gennemgås nøje med henblik på at forstå
hvordan enheden fungerer og/eller hvilke opgaver, der skal
udføres under drift og vedligeholdelse af enheden.
OPBEVAR DENNE MANUAL SAMMEN MED ENHEDEN.
Denne tekniske manual indeholder VIGTIGE SIKKERHEDS­DATA og bør altid opbevares sammen med enheden.

Mere end luft. Svar.

Onlinesvar: http://www.air.irco.com

C.C.N. : 80444128
REV. : B
DATO : JULY 2008

AFSNIT 1  INDHOLDSFORTEGNELSE

Afsnit 1 - inDHOLDsfORtEGnELsE ........................3

Afsnit 2 - intRODuktiOn .........................................3

Afsnit 3 - sikkERHED .................................................3

MONTERING .................................................................................3

DRIFT ..............................................................................................3

VEDLIGEHOLDELSE OG REPARATION ................................3

Afsnit 4 - kOMPREssORtiLsLutninG OG

kOntROL .........................................................................4

KOMPRESSORTILSLUTNING OG KONTROL......................4

NORMALE KONTROLFUNKTIONER OG

FUNKTIONALITET .......................................................................4

ANVENDELSE AF VSDBOKSEN ............................................5

Afsnit 5 - MOntERinG ................................................5

ENHEDSPLACERING ..................................................................5

STRØMFORSYNING ...................................................................5

RS485 NETVÆRK .........................................................................5

Afsnit 12 - DELE ........................................................ 24

IR VSD BOX .................................................................................24

Afsnit 13 - tEkniskE DAtA ..................................... 24

VSDBOKS ...................................................................................24

Afsnit 14 - kAbELføRinGsDiAGRAM .................. 25

Afsnit 15 - AnVEnDELsEsfORM ........................... 27

Refer to Section Indicated

Note

Important or Caution, Safety

TRYKSENSORENS TILSLUTNINGER ......................................6

VSD OG IRPCB KOMPRESSORTILSLUTNING ..................7

KONTROL AF IRPCB KOMPRESSOR ...................................7

STATUSOVERVÅGNING AF IRPCB KOMPRESSOREN ...7

KLAR ................................................................................................7

KØRER .............................................................................................8

BELASTET ......................................................................................8

Afsnit 6 - VsD-bOksEns

HARDwAREkOnfiGuRAtiOn .................................. 11

Afsnit 7 -inGERsOLL RAnD tiL VsD-bOks

sAMMEnkObLinG ...................................................... 12

Afsnit 8 - ibRuGtAGninG ....................................... 14

sEktiOn 9 - skæRMbiLLEDE OG MEnu ................ 16

MENUNAVIGATION ...............................................................16

Afsnit 10 - DiAGnOstikkER ................................... 21

Afsnit 11 - DRift ....................................................... 22

TASTATUR ................................................................................... 22

DISPLAY .......................................................................................22

INDIKATORER ............................................................................ 22

BRUGERMENUENS PUNKTER .............................................23

STRØMSVIGT AUTOMATISK GENSTART .........................23

3

!

!

AFSNIT 2  INTRODUKTION

VSD-boksen er beregnet til at give en metode til
systemintegration hos en VSD-kompressor (Variable
Speed Drive), som ikke er udstyret med nogen
tilgængelige former for erntilslutning

(såsom Ingersoll Rand Nirvana). VSD-boksen
giver den nødvendige funktionalitet som behøves
til systemintegration og effektiv kontrol med
automationssystemet X8I .

AFSNIT 3  SIKKERHED

ADVARSEL : Risiko for fare

ADVARSEL : Risiko for elektrisk stød

ADVARSEL : Risiko for højt tryk

ADVARSEL : Se i manualen

Inden du installerer eller anvender VSD-boksen, skal

•

du tage dig tid til at læse alle instruktionerne i denne
manual, alle kompressormanualer og alle manualer
der er tilknyttet perifere enheder, som kan installeres
i eller sluttes til dette produkt.

Elektricitet og trykluft har potentiale til at forårsage

•

alvorlig person- eller tingsskade.

Operatøren bør brug sin sunde fornuft samt gode

•

arbejdsmetoder i tilslutning med anvendels og
vedligeholdelse af systemet. Alle relevante koder bør
overholdes nøje.

Vedligeholdelsesarbejde skal udføres af kvalificeret

•

personale, som er udstyret med rette værktøj.

VSD-boksen må kun anvendes med den tiltænkte

•

forsyningsspænding og -frekvens.

Når strømmen er slået til, er der dødbringende

•

spænding tilstede i de elektriske kredsløb, hvilket
betyder, at der skal udvises ekstrem forsigtighed, når
der skal udføres arbejde på enheden.

Åben ikke adgangspanelerne og rør ikke ved de

•

elektriske komponenter, når der er aktiv spænding,
medmindre det er nødvendigt for at kunne foretage
målinger, tests eller justeringer. Sådant arbejde
bør kun udføres af en kvalificeret elektriker, som
er i besiddelse af det korrekte værktøj, og som
har den nødvendige beskyttelse mod elektriske
faremomenter.

Alle luftkompressorer og/eller andet udstyr, der er

•

forbundet med enheden, bør være udstyret med et
advarselsskilt ved siden af displaypanelet som siger
at “DENNE ENHED KAN STARTE UDEN VARSEL”.

Hvis en luftkompressor og/eller andet udstyr som er

•

sluttet til enheden skal ernstartes, skal der påsættes
to skilte på udstyret med følgende besked: ‘DENNE
ENHED KAN FJERNSTARTES’. Påsæt et skilt et på en
synlig placering, et på ydersiden af udstyret og det
andet inde i udstyrets kontrolskab.

MONTERING

Monteringsarbejdet må kun udføres af en kompetent

•

person under kvalificeret opsyn.

Der skal anbringes en sammensmeltet

•

isoleringsafbryder mellem hovedstrømforsyningen
og VSD-boksen.

VSD-boksen skal monteres på et sted, hvor

•

der er drifts- og vedligeholdelsesadgang uden
forhindringer eller fare, og indikatorerne skal altid
forblive synlige.

Hvis der er brug for forhøjede platforme til at give

•

adgang til VSD-boksen, må de ikke forstyrre den
normale drift eller adgang. Platforme og trapper
skal være rist- eller pladekonstruerede med
sikkerhedsrælinger til alle åbne sider.

DRIFT

VSD-boksen må kun anvendes af kompetent

•

personale under kvalificeret opsyn.

Fjern eller rod aldrig med de sikkerhedsaggregater,

•

afskærmninger og isoleringsmaterialer som er
monteret på VSD-boksen.

VEDLIGEHOLDELSE OG REPARATION

Vedligeholdelse, reparation og ændringer må kun

•

udføres af kompetent personale under kvalificeret
opsyn.

Hvis der kræves reservedele, må der kun anvendes

•

originale dele fra den oprindelige fabrikant, eller fra
en anden godkendt kilde.

Udfør følgende trin, inden der åbnes eller ernes

•

adgangspaneler, samt før der udføresarbejde på
VSD-boksen:

Isoler VSD-boksen fra

i.

hovedstrømforsyningen. Fastlås isolatoren i
OFF-positionen og ern sikringerne.

Påsæt en etiket på isolatorkafbryderen og

ii.

på enheden´med teksten “ARBEJDE PÅGÅR

- TILFØR IKKE SPÆNDING”. Der må ikke sluttes
elektrisk strøm eller forsøges at starte VSD­boksen, hvis et sådant advarselsskilt er påsat.

Vær sikker på, at alle instruktioner vedrørende drift

•

og vedligeholdelse følges nøje samt at enheden,
såvel som alt tilbehør og sikkerhedsanordninger,
holdes i god tilstand.

3