Description Product Introduction Diesel or gas genset needs to start, synchronize, and share load. The 5501-470 handles it all—from cranking the engine to closing the breaker and managing kW/kVAR distribution. It’s the brain of a Woodward EasyGen-3500 system. What makes the -470 variant different? It’s configured for mains paralleling with import/export control. In my experience, this is the go-to module for cogeneration plants and backup systems that need to sell power back to the utility. The 5501-470 includes all the protective relays required for interconnect (ANSI 25, 27, 59, 81, 32), plus the logic engine for custom sequences. Front-panel display shows everything—volts, amps, kW, kVAr, status messages. Key Technical Specifications Parameter Value Model 5501-470 Brand Woodward Series EasyGen-3500 Product Type Generator Control Module Application Mains paralleling with import/export control Input Voltage 24 VDC (18–32 VDC operating) AC Sensing 3-phase generator voltage/current, 3-phase bus/mains voltage Protective Functions ANSI 25, 27, 59, 81 (over/under), 32 (reverse power), 40 (loss of field), 51 (overcurrent) Control Functions Auto start/stop, synchronization, kW load sharing, kVAr sharing, import/export control Communications RS-232, RS-485 (Modbus RTU), CANbus (for load sharing) Discrete I/O 8 digital inputs, 8 relay outputs (configurable) Analog I/O 4 analog inputs (4-20 mA), 2 analog outputs (optional) Display Backlit LCD, 4-line x 20-character Temperature Rating -20 °C to 70 °C operating Mounting Panel mount (cutout) Certifications CE, UL, CSA, NFPA 110 Firmware / Software Versions & Upgrade Notes The 5501-470 runs the Woodward EasyGen firmware. This is configurable, not just programmable. Firmware Version: Version 1.4 or later is recommended. Earlier versions (1.0–1.3) had a known issue with the synchronizer hunting on weak grids—the breaker would sometimes close with a 5-10 degree phase error. v1.4 improved the phase-locked loop algorithm. Compatibility: Works with all EasyGen-3500 accessories (speed sensors, I/O expanders) For load sharing with multiple gensets, all controllers must be on the same firmware version Modbus mapping changed slightly in v1.4—update your SCADA if you’re using custom drivers Configuration Software: Use Woodward’s ToolKit (or EasyGen PC software). Connect via RS-232 to the front port. You can: Set system parameters (kW/kVAR ratings, breaker types) Configure protective relay setpoints Define digital I/O functions Tune PID loops for speed and voltage Save/load configurations to file Upgrade Process: Download the firmware .hex file from Woodward Connect PC to controller via serial cable Open ToolKit, select “Firmware Update” Browse to .hex file and start update (takes about 3 minutes) Controller reboots automatically Critical: The genset must be stopped and the breaker open. Do not update with the engine running—outputs may glitch. Rollback: You can downgrade to earlier versions, but configuration files may not be backward-compatible. Always save a copy of the current config before updating. Compatibility & Replacement Matrix Use this when servicing or upgrading EasyGen-3500 systems. Original Model Replacement Model Compatibility Level Key Notes 5501-470 5501-470 Drop-in Identical part. Direct replacement. 5501-470 5501-467 Needs Adaptation 5501-467 is the “island only” version (no mains paralleling). Different feature set. Will not do import/export. 5501-470 5501-473 Drop-in 5501-473 is the “utility parallel” version with extended protection. Electrically similar but check relay setpoints. 5501-470 easyGen-3200 Incompatible EasyGen-3200 is an older series. Different form factor, different software. No backward compatibility. 5501-470 GCP-30 Incompatible GCP-30 is a different Woodward series (for smaller gensets). Won’t interface with EasyGen accessories. ACH401600422-A0AE0000 PLC ACH401600532-ACE0000 ENIGHW-12Z PLC ACH401600632-A0AE0000 I/O ACH401601122-A0AE0000 PLC ACH401601632 A0BE0000 PLC ACH401601632-A0AE0000 I/O Email: [email protected] Phone: 86 15340683922 Sales:Wu Jiedong Our products are guaranteed for 1 year, with new and original production stopped and imported spare parts. All prices listed on the official website are subject to confirmation by contact: Wu Jiedong (manager). Our product: brand new original packaging Our warranty: All new or repaired parts have a 12 month warranty period beginning Our payment: 100% telegraphic transfer of inventory items before shipment, conditions can be proposed! If you have any downtime spare parts that you cannot find, please feel free to call or use email to contact me. If there are issues that the product cannot solve, please contact me. Product prices can be negotiated. Please do not consider contacting me!