Carel Bitzer

T e c h n o l o g y & E v o l u t i o n

Integrated solutions for Bitzer screw compressors

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Integrated solutions for Bitzer screw compressors

As a result of our partnership with Bitzer, CAREL presents the new driver for screw compressors designed for the pCO platform. An EasyTools macroblock has been developed to customised software applications for OEMs who want to differentiate their offering, or alternatively to be directly embedded into standard chiller application software. Both solutions, the Macroblock or the complete software application, can be downloaded from the CAREL site. The revolutionary driver manages the operating limits of the compressor for each type of refrigerant, according to Bitzer specifi cations, allowing operation with maximum performance without compromising the compressor.

The best way to protect Bitzer screw compressors

Sample of envelope protectionBased on the value of suction and discharge pressures, the compressor is unloaded for safety, according to the specifi c refrigerant.For more information please refer to Bitzer

documentation.

75% max. capacity1 min time limit

5 min at 50% capacity during start-up

100% max. capacity 1 min limit time

immediate stop

correct operation

75% max. capacityno time limit

50% max. capacity10 min time limit

Hardware Driver based on pCO1 smallfor third party PLC

In addition to the software driver, CAREL provides a

pCO platform controller equipped with Bitzer driver,

capable of managing the contactors, the thermal and

mechanical protectors, the cooling capacity and actively

protect the compressor against suction and discharge

pressure values that may affect its working life.

Specifi c featuresembedded Software Driver for:

capacity control;

part-winding;

maximum safety;

plus protection provided by:

low pressure switch;

high pressure switch;

high pressure transducer;

low pressure transducer;

high discharge temperature;

4 to 20 mA signal for capacity control.

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Software Driver for EasyTools

Suitable for your custom software application or embedded into CAREL standard screw chiller software.

Specifi c featurespart-winding start;4 capacity control steps, 25, 50, 75 and 100% and step-less capacity control;start unloading (starts at 25%);economizer / liquid injection solenoid valve control;application limit protection with R134a, R407C and R22;start up with high evaporating temperature;oil level alarm;timing protection (even after a blackout).

controlled by 4 to 20 mA

Integrates protection driver for Bitzer screw compressor

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Headquarters

CAREL S.p.A.Via dellIndustria, 11 - 35020 Brugine - Padova (Italy)Tel. (+39) 0499 716611 - Fax (+39) 0499 [email protected] - www.carel.com

Subsidiaries

CAREL Australia Pty [email protected]

CAREL China Ltd. [email protected]

CAREL Deutschland GmbH [email protected]

CAREL Export [email protected]

CAREL France [email protected]

CAREL Italia [email protected]

CAREL Sud America Ltda. [email protected]

CAREL U.K. Ltd. [email protected]

CAREL USA [email protected]

www.carel.com

Affi liated Companies: CAREL Korea Co. [email protected] CAREL (Thailand) Co. [email protected]

+302239371 - 1.0 - 01.03.06

CAREL S.p.A. 2006 all rights reserved

CAREL reserves the right to modify the features of its products without prior notice.

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