Woodward easyYgen-3500XT-P1 obstacle removal

In the relay output, R01 "Ready for operation" is reverse logic: when the logic output is TRUE, the relay loses power. It must be connected in series with the emergency stop circuit to ensure that the GCB is disconnected and the engine stops when R01 loses power. R02 is commonly used for centralized alarm/horn, R03 for starter motor, R04 for fuel/gas valve, and R05 for preheating/ignition. If R01 is misconfigured or bypassed, the controller may not be able to safely shut down during self check abnormalities.

Application mode, circuit breaker and synchronous troubleshooting

Application modes A01 to A11 determine the control relationship between GCB, GGB, MCB, and LS-5. On site confirmation must be made that the mode is consistent with the actual primary system. The transition modes of circuit breakers include Parallel, Interchange, Closed Transition, Open Transition, and External; Different modes have different requirements for synchronization, disconnection, delay, and external control.

GCB synchronously checks voltage difference, frequency difference, phase angle, and dwell time. Common reasons for synchronization timeout include: incorrect PT ratio or secondary rated value, reverse phase sequence connection, incorrect phase compensation setting, circuit breaker feedback not received, speed/voltage regulation not entering the window, and synchronization timeout setting too short. If phase angle compensation is used, it is necessary to confirm the transformer vector group and compensation direction; Compensating for errors will keep the same period table unable to meet the conditions.

GCB "closing failure" requires checking the maximum number of closing attempts, closing hold/pulse mode, closing time, feedback loop, and locking conditions. Check the disconnection monitoring time, auxiliary contacts, mechanism jamming, and alarm level for 'disconnection failure'. If LDSS is enabled, GCB disconnection failure should be configured as C-F type shutdown alarm or interlocked to exit LDSS, otherwise it may continue to start the next unit.

The closing of the dead bus is also constrained by the bus voltage, other GCB states, equipment number negotiation, and transfer time. In multi machine systems, controllers with smaller device numbers have priority in obtaining the right to close the dead bus; If communication is abnormal or parameters are inconsistent, there may be a phenomenon of "dead bus can be connected but not actually connected".

Protection settings and common alarms

The generator side includes over/under voltage, over/under frequency, three-stage overcurrent, reverse power/low power, unbalanced load, ground fault, voltage asymmetry, power factor lead/lag, etc. The engine side includes overspeed, underspeed, startup failure, shutdown failure, unexpected shutdown, low voltage of D+charger, cylinder temperature deviation, etc. The mains side includes over/under voltage, over/under frequency, mains column ROCOF、QV、FRT、 The average voltage rise over 10 minutes is high.

When troubleshooting alarms, first check the alarm category, delay, self confirmation, and "Enabled" condition. The function of "delaying according to engine speed" has been uniformly released by LogicsManager's "Release engine monitoring"; If the release conditions are not met, the relevant protection will not be activated. Under voltage, under frequency, under speed, and some flexible limits will be suppressed in idle mode; Flexible limits cannot replace safety protection, and monitoring cannot be guaranteed beyond 320% of the range.

The selection of disconnect circuit breakers, feedback delay, and alarm level should be confirmed for the municipal electrolysis train; If the feedback is not received after disconnection, it may switch to the other side circuit breaker and generate a 'Decoupling GCB' ↔ MCB "alarm. Whether the increase in mains voltage, QV, FRT, etc. are involved in the disconnection should also be checked item by item.

Communication and Load Distribution

CAN # 1 is a universal CANopen, CAN # 2 is used for J1939 engines or CANopen expansion modules, and CAN # 3 is used for load distribution and LS-5 communication. All nodes must have consistent baud rates, with 120 Ω terminal resistors added at both ends of the bus. The shielding layer should be grounded according to specifications, and the exposed shielding length on the terminal side should not exceed 25 mm. CAN monitoring can check for lost RPDO, lost nodes, mapping errors, etc; J1939 needs to check the ECU address, self address, SPN version, and device type. For unlisted ECUs, select "Standard" and verify remote control messages such as TSC1.

Ethernet A/B/C is used for Modbus TCP, ToolKit Servlink, and UDP load distribution. IP、 The subnet mask and gateway must be on the same network segment and not duplicated; The Modbus TCP slave ID must be correct. Modbus abnormal response 01 indicates that the function is not supported, 02 indicates address/permission issues, and 03 indicates that the data value exceeds the limit. The load distribution interface can be selected as CAN # 3 or Ethernet, with a maximum of 32 units; Multi machine systems must perform 'System update', otherwise Missing easyYgen/LS-5 or member count mismatch may occur. Inconsistencies in LDSS parameter alignment, segment number, priority, rated power, and CT/PT ratio can cause load distribution deviations or parameter alignment alarms.