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Capstone Turbine Corporation • 21211 Nordhoff Street • Chatsworth • CA 91311 • USA Technical Reference: Stand Alone Operation–Capstone Models C30 and C65 5.7. Deactivating Stand Alone Power Output The system can be commanded to manually deactivate output power (output contactor open) and return to the Run state where it will remain operating with fuel. To deactivate Stand Alone power output, perform the following: • CRMS: From the microturbine control panel, click on the red DISABLE button. • Display Panel: Press and hold the INTERLOCK and DISABLE buttons simultaneously. Once an output power disable command has been given, the system must be manually commanded to again deliver output power, even if Auto Load had been previously enabled. 5.8. Stopping Stand Alone Operation A Stop command can be performed at any time during the microturbine operation. If the dispatch mode is set to User then the Stop command can be given through the microturbine display panel, CRMS, or Building Management System (BMS). If the dispatch mode is set to Remote then the stop command can only be given by removing the start command digital input. Once the stop command is given the microturbine immediately ceases supplying output power (output contactor opens) and transitions to the Recharge state. Then, the system continues operating with fuel to charge the battery to 90-95 percent state-of-charge, which can take up to 20 minutes. Finally, the microturbine shutdown process initiates a cooldown period, which can last up to 10 minutes. • CRMS: From the microturbine control panel, click on the red STOP button. • Display Panel: Press and hold the INTERLOCK and STOP buttons simultaneously. • Remote: Stop command on the digital input through contact opening. 5.9. Initiating an Emergency Stop CAUTION: Repeated use of the optional Emergency Stop switch will result in damage to the microturbine. Use only in emergency situations. If an optional emergency stop (E-stop) has been installed, the E-stop switch may be activated. Activating E-stop immediately shuts off the fuel and electrical output. This causes the compressor bypass valve to open, venting the compressed air out of the microturbine and causing it to coast to a stop. After an emergency stop, power to the microturbine must be turned off for 30 seconds before a restart can be attempted. Emergency stops should NEVER be used for routine shutdowns. Emergency stops increase stress on the system components and will result in reduced service life of the microturbine. 6. System States Stand Alone mode passes through a set of system states during a normal cycle. These states are described in the section below. A simple block diagram illustrating Stand Alone system states is shown in Figure 9. 410028 Rev E (June 2013) Page 35 of 42 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 | Technical Reference Stand Alone Operation – Capstone Model C30 and C65
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