Model Interpretation

8446: RP-3000 remote panel general series code;

1019: Standard configuration variant, LCD backlight display + 12-key membrane keypad, dedicated RS485 communication bus for 505 host, standard embedded panel mounting specification, factory fixed communication protocol matching 505 governor series.

Technical Specifications

Electrical Parameters

Power Supply: DC18～32V (rated 24VDC, max power consumption 15W)

Working Temperature: -25℃～+70℃; Storage Temp: -40℃～+85℃, 5%～95%RH non-condensing

Overall Dimension: Front panel 172×128mm, cabinet cutout 152×108mm, depth 55mm, net weight≈1.15kg

Certification: CE, UL/cUL industrial safety certification, Class I Div.2 hazardous area applicable approval

Hardware Layout

Front: 2-line backlit LCD screen + 12 built-in operation keys for parameter scroll, setpoint adjust, fault reset and mode switch; status indicator for communication and system alarm.

Rear: Screw terminal for DC power wiring + dedicated RS485 communication terminal connected to 505 controller; no extra onboard I/O, pure operation display type.

Interface and Communication Configuration

Front Interface: Local button operation + LCD real-time data display; no front wired port.

Rear Communication: Exclusive Woodward custom RS485 bus, point-to-point cable connection with 505/505E governor main unit, max wiring distance 100m; no native Modbus/Ethernet, all data exchange depends on dedicated governor communication protocol.

Core Function

Remote real-time monitoring: Synchronous display governor speed, load, valve position, analog sensor value, running status synchronously with cabinet 505 main controller.

On-site parameter adjustment: Local modify speed setpoint, droop value, protection threshold without cabinet access to main controller.

Fault inquiry & reset: Browse historical fault code, current trip alarm info locally, execute manual fault reset after trouble removal.

Control mode switching: Switch between Isochronous/Droop/Remote analog control mode on site via panel keys.

Fault diagnosis: Panel communication loss alarm to judge wiring break or main controller abnormal state rapidly.

Applicable Scenarios

Steam turbine generator set, waste heat recovery turbine, gas engine genset, petrochemical process compressor prime mover, small cogeneration unit; install on on-site local operation box away from central control cabinet of 505 governor system.

Operation and Maintenance Instructions

Mount away from high-frequency inverter and strong electromagnetic equipment to avoid RS485 communication disturbance and screen flicker.

Regular check rear power and communication terminal fastening, prevent loose wiring leading to panel offline failure.

Replacement must adopt original 8446-1019; match communication address consistent with original before power on, no extra parameter programming required normally.

Abnormal blank screen/communication break: First inspect 24VDC input voltage and RS485 two-core wiring polarity; confirm main controller running normally then judge panel hardware damage.