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CHAPTER 4 Capstone OPERATING MODES Configuring Stand Alone Mode The C200 microturbine must be told what mode to operate in. This requires both hard wired connections in the User Connection Bay, and software commands from the front panel display or through one of the serial communications ports using a PC with CRMS. To operate in Stand Alone mode, the following needs to be done: Set the System “Power Connect” mode to “Stand Alone” using the Display or using a PC with CRMS. Provide external control connections to the Stand Alone enable input in the User Connection Bay. Refer to Dual Mode below for a discussion of how to switch between Grid Connect and Stand Alone modes. Refer to Chapter 10: Communications in this document for details on pin connections. In addition to this Stand Alone mode setup, a means to start and stop the system must be configured. The sections below provide additional functions to be considered for setting up soft start and dispatch modes. The Communications chapter provides description of other input and output options, including Emergency Stop and fault inputs. The system voltage and frequency will also need to be set. Refer to the C200 Users Manual (400008) and CRMS Technical Reference User’s Edition (410013) for configuring all these settings. Auto Restart The C200 microturbine system can normally be restarted after a shutdown, while the battery recharges, or during the Cooldown period before the speed of the microturbine reaches zero. This allows for faster power output and reduced bearing wear. If Auto Restart is ON, the system will attempt to restart after low-severity incident-driven shutdowns. Enabling Auto Restart increases system availability and is recommended by Capstone. Note that setting Auto Restart to ENABLE impacts both Grid Connect and Stand Alone operating modes. Separate adjustable timers can be used to set different restart time delays for Grid Connect and Stand Alone modes. These timers are only adjustable using CRMS. Auto Load The Auto Load option allows the user to enable the microturbine to automatically close the output contactor once the system has started and is ready to load. A “Yes” setting automatically makes power available once the microturbine is ready to generate power. A “No” setting requires the user to manually press Interlock and Enable on the C200 Display to allow the microturbine to produce power. This command can also be set through the serial port using CRMS. The Auto Load feature should be enabled to have the contactor automatically close when Auto Restart is enabled and a restart fault occurs. Stand Alone Load Wait The Stand Alone Load Wait function applies only to Dual Mode configured systems. This provides a timer that maintains the system in Stand Alone Load State before the transition back to Grid Connect, after the utility grid has returned to normal. The timer begins when the utility voltage and frequency are detected to be within the required operating range, and maintains the turbine in the Stand Alone load state until the time has expired. This timer is adjustable from 5 to 30 minutes. 410066 Rev C (June 2009) 4-4 Capstone reserves the right to change or modify, without notice, the design, specifications, and/or contents of this document without incurring any obligation either with respect to equipment previously sold or in the process of construction.PDF Image | CAPSTONE C200 MICROTURBINE TECHNICAL REFERENCE
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