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Publication Title | Capstone Technical Support C200 v1.33 Software Release

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Text | Capstone Technical Support C200 v1.33 Software Release | 001


Capstone Turbine Corporation  21211 Nordhoff Street  Chatsworth  CA 91311  USA Telephone: (818) 734-5300  Fax: (818) 734-5320  Web:

Service Bulletin SB0111

Date: From: Subject:

November 2011

Capstone Technical Support C200 v1.33 Software Release

Systems Affected

Capstone Model C200 and C1000 Series systems running software lower than v1.33.


Changes since software version 1.20 include the following:

 Power capacity algorithm – Software versions v1.20 and earlier had an error in the

power capacity algorithm, which is used to share the load in a multipac application. The system could sometimes get “stuck” at a low power capacity, the engine would operate at less than full speed, and the system would not reset when ambient conditions improved. This error is corrected in version 1.33.

 Speed avoidance algorithm – Software version 1.33 incorporates a speed avoidance algorithm for Natural Gas and LPG systems. The purpose of the speed avoidance is to prevent the turbine from running at speed that can cause excessive harmonic vibration. The speed avoidance is accomplished by lowering the Turbine Exit Temperature up to 100 °F. If the system is set to operate at a power level that would otherwise cause the engine to dwell at an undesired speed, the system will lower the TET, which will cause the engine to increase above the undesired speed range.

Required Action

 Install this software on all C200 and C1000 Series systems at next scheduled service visit.

 When uploading this software, reload all PMs with latest version of PM Programmers software.

450115 Rev A (November 2011) Page 1 of 2

This information is proprietary to Capstone Turbine Corporation. Neither this document nor the information contained herein shall be copied, disclosed to others, or used for any purposes other than the specific purpose for which this document was delivered. Capstone reserves the right to change or modify without notice, the design, the product specifications, and/or the contents of this document without incurring any obligation either with respect to equipment previously sold or in the process of construction. Copy is uncontrolled; user is responsible for verifying current revision.

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