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Capstone Turbine Corporation 21211 Nordhoff Street Chatsworth CA 91311 Service Bulletin SB0107: C200 v1.20 Software Release RTD wires. Resistance between CH+ and CH- should be approximately 100-120 ohms. Failed PLC RTD card Verify RTD reading for C200 on PLC screen’s MT and/or Ex display, if equipped. For C1000, check the Panel PC display I/O screen readings for RTD, header RTD, and External RTD of each bay, if equipped. If any are reading 32767, it is possible that PLC RTD card has failed. If RTD resistance reads OK (as measured per previous test), RTD card has failed. Replace PLC RTD card. Loose power wires between DC bus terminals located inside power module and heat trace VFD input (DM systems) Check for proper connections at top terminals of VFD (DC bus power from power module). Check for proper wiring connection at power module that leads into VFD. Retighten DC bus power harness connections between power module and VFD. Verify that DC bus voltage measures correctly at VFD input. Failed heat trace VFD (DM systems) If DC bus voltage measures 760VDC (top terminals of VFD), output voltage to heat trace controller at bottom of VFD should read 277VAC. If VFD is correctly programmed and all jumpers are in place (in accordance with propane system wiring diagram) and 277VAC is not present, VFD has failed and must be replaced. Replace heat trace VFD. Power is not present at heater element Check that power is available from VFD (for DM systems) or from high power user power connection (for GC systems). If power is present, check that 277VAC is applied to MT heater element, Ex heater element, and header heater element (for C1000). If voltage is not present: 1. Check that GFPD (ground fault protection device) is turned on and has not tripped. Check that circuit breakers for heater element and external heater element (if equipped) are turned Check GFPD and heater element circuit breakers. Verify that power wiring is intact. If tripped breaker or GFPD are detected, determine cause and provide remedy before proceeding with operation. If 277VDC power is present at contactors but contactors remain open, check for 24VDC signal to contactor coil from HTC (for C1000 series systems) and from PLC (for C200 systems). If failed contactors are detected, they must be replaced. 450109 Rev A (April 2011) 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. Page 7 of 9PDF Image | Capstone Technical Support C200 v1.20 Software Release
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