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Capstone CHAPTER 4 OPERATING MODES Point of Common Connection GGGG Utility Capstone Scope of Supply Local Loads PLC or Computer Figure 4-1. Typical MultiPac Interconnection MultiPac Communications Capstone microturbines use two digital communications connections between systems in a MultiPac to allow information to be shared: Load Control – Ethernet is used for command and control. Commands (i.e. start/stop, power demand) are input to the MultiPac Master. The Master then sends resulting commands to each microturbine in the MultiPac. The MultiPac Master routinely queries all microturbines connected to it for operational and fault data. Users can request data from any turbine through this Master. Inverter Synchronization – in Stand Alone mode, one turbine serves as an Inverter Master, passing voltage and frequency signals to all other turbines for synchronization using RS-485 signals. Note that the Inverter Master does not have to be the MultiPac Master, and requires no additional configuration other than setting up the MultiPac through the MultiPac Master. The RS-485 intra-cable harness also includes global E- stop and Battery Wake-up lines so that these hardwired commands can be immediately passed from the control Master to all other microturbines in the MultiPac. The wake-up signal can be passed from any unit to the rest. Refer to Chapter 10: Communications in this document for details on these digital communications connections. Configuring MultiPac Operation Microturbines connected in a MultiPac must be told how to operate. 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 MultiPac, the following needs to be done: Designate the MultiPac Master as turbine “1” using the Display or using a PC with CRMS. The MultiPac Master can be one of the microturbines or the Advanced Power Server. All other microturbines must be set to a unique addressing number. Enable MultiPac mode in each microturbine using the Display or using a PC with CRMS. 410066 Rev C (June 2009) 4-8 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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