Programmable sequencer for up to 4 air compressors

Pro-Master 4

A system solution offeringoptimised pressure control,reduced energy consumption,lowered carbon footprint anddecreased costs.

The Hydrovane Pro-Master 4 sequencer uses narrow band pressurecontrol with flexible functionality for the central management and control of air compressors in multiple compressor installations.

In most compressed air systems the demand for air will fluctuate and the air main pressure will

consequently decay or rise in response to the changes in demand. To cope with the unpredictability

of changes in demand it is usual to operate all of the compressors all of the time. While this ensures

an adequate flow rate of air for all demand profiles in most cases the air flow rate will be excessive.

Hence it is an inefficient method of control that results in unnecessarily increased energy consumption,

higher running costs and larger carbon footprint.

In single compressor installations compressors are available with their own individual controllers that

provide an individual capability to switch on or off based on air main pressure. In a multiple compressor

installation individual compressors cannot have their controllers directly linked together to provide any

collective control. To control multiple compressors a discrete piece of ancillary equipment called a

sequencer is required.

The Hydrovane Pro-Master 4 sequencer is specifically designed for use with the Hydrovane Pro and

Pro RS controller using ModBus and the Hydrovane S1 controller using AirBus. It will also seamlessly

connect to any other Gardner Denver or CompAir compressor using Modbus.

Note that with Pro RS controllers the sequencer only

connects with the compressor and provides it with a

load signal: the sequencer does not control it.

Universal application:for use with most

positive displacementcompressors

Quick and easyinstallation with pre-loaded

software for instantsavings

Average systemspay for themselves within 12 monthsPassword

protected userinterface

Uses highaccuracy pressure

sensing

Controlsup to 4

compressors

Pro-Master 4. Balances output and saves power

A decrease of 0.5 bar in the

operating pressure of an air

main will typically produce

around a 5% reduction in the

overall cost of electricity

consumed by the compressors.

User benefits:

• Optimised pressure control

• Reduced energy consumption

• Lowered carbon footprint

• Decreased costs

• Increased compressor life

• Hydrovane’s guarantee of

worldwide technical support,

knowledge and service.

Optional Extra:For connectivity with other brands of

positive displacement compressors

an input/output device called an

iPCB is available.

The Hydrovane Pro-Master 4

comes complete with pressure

sensor providing a digital output.

Real time clock allows automated time

scheduled tasking

Hydrovane Pro-Master compressor sequencers automatically respond to changes in demand by optimising

the operation of each compressor in a multi compressor installation. The optimisation is achieved by controlling

the air main pressure within a narrow band and then managing the operation of each of the available compressors

in a pre defined sequence. This control strategy provides a total system solution offering an automatic and fast

response to changes in demand, reduced energy consumption, lowered carbon footprint and decreased costs.

They provide a low cost solution with a short return on investment (ROI).

Typical Application

Up to 4 air compressors can be sequenced

Hydrovane Pro-Master 4 compressor sequencers have two different modes of control to suit the specific

characteristics of any installation:

Timer Rotation: Used where all the compressors are sequenced based on a defined or pre-selected running order.

Fixed Cascade: Used where the compressors are of all different capacity by sequencing all in an optimised manner

avoiding inefficient idle running by selecting the correct size of compressor for the demand based

on a reduction of pressure in the air main.

Within the Timer Rotation mode of control one of the following sequences may be selected:

Equal Hours: Used where all compressors are the same size and there is preference to service all the

compressors at the same time by equalising the hours run.

First In First Out (FIFO): Used where the compressors are different sizes, typically for air systems where there is widely

fluctuating demand, and a particular compressor is prioritised.

Timer Rotation: Used where the compressors are different sizes, typically for air systems where there is widely

fluctuating demand, and different compressors can be prioritised for different demand profiles.

To userson the plantiPCB (Max 100 metres)

RS485 2 (Max 1600 metres)

RS485 1 (Max 1600 metres)

RS485 2 (Max 1600 metres)

NetworkPressure Sensor

Auxiliary Digital Input

By understanding the capability and operational requirements of a particular installation the selection of the most suitable sequence

combined with adjustment of the parameters will then achieve the highest level of efficiency.

Auxiliary Relay Output

iPCB

Gardner Denver Ltd

Claybrook Drive, Washford Industrial Estate,

Redditch, Worcestershire B98 0DS, United Kingdom

T. +44 (0)1527 525522 / 838200

F. +44 (0)1527 521140

E. hydrovane-info.uk@gardnerdenver.com

www.hydrovaneproducts.com

© Gardner Denver Ltd

Hydrovane is part of the Gardner Denver Group.

Gardner Denver policy is one of continuous improvement

and we therefore reserve the right to alter specifications

without prior notice. All products are sold subject to the

Company’s conditions of sale.

G609GB – 09/2011

Outline Technical Information

Supply / Power: 230Vac +/- 10%, 115Vac +/- 10%, 50VA

Enclosure rating: IP54 / NEMA12

Approvals: CE, UL, cUL

Dimensions: Height: 236mm (9.45”) x Width: 286mm (11.45”) x Depth: 152mm (6”)

Weight: 6.4kg (14lb)

Mounting: Wall, 4 x screw fixing

24mm

24mm

238mm

286mm

236mm188mm

8mm ø

Auxiliary digital input – Function list

Override – standby

Remote start / stop

Remote alarm (always active)

Remote alarm (active only when Pro-Master 4 is running)

Remote trip (always active)

Remote trip (active only when Pro-Master 4 is running)

Auxiliary relay output – Function list

Any fault (alarm, trip, unavailable condition)

Any trip (trip, unavailable condition)

Compressor alarm (alarm)

Compressor trip (trip, unavailable)

System fault

System on

System active

System pressure control active

Low pressure alarm

High pressure alarm

Pressure control override

Hydrovane Pro-Master compressor sequencers also have a number of adjustable parameters offering further flexibility

to modify the control mode to suit the installation as follows:

Pre-Fill: This feature is used to select which compressor(s) will be used for start-up to eliminate the high power

demand and inefficient operation associated with conventional sequence control systems where all the

compressors are run at start up irrespective of the system fill time and initial demand.

Sequence Rotation: This feature allows a change in sequence to occur at a pre-defined time when air demand may be

different e.g. at break times.

Priority Settings: This feature allows the system to react to changes in pressure target levels in a smooth and

energy efficient manner without abrupt overreaction.

Pressure Schedule: This feature provides settings that instruct the system to change from one target system

pressure to another or to put the system on standby at a pre-determined time.

Hydrovane Pro-Master compressor sequencers also have the capability to accept an auxiliary input

and provide an auxiliary output.

Auxiliary Digital Input: Provides capability for auxiliary equipment to override the sequencer function

e.g. remote start/stop, remote trip, etc.

Auxiliary Relay Output: Used to control auxiliary equipment eg starting refrigerant dryers so that they can fully initialise

before the compressors start.

Please contact your local authorised Hydrovane distributor to

discuss your needs and how we can reduce your energy costs with

a compressed air system energy audit.