Description
Core Product Summary
The Rolls-Royce WRC1021D is a marine remote controller circuit board associated with deck machinery and servo valve control systems. It is designed to provide control functions for compatible equipment, using command and feedback signals within the installed control arrangement.
The WRC1021D is identified as a replacement for earlier WRC1021 boards, with published documentation describing mechanical and functional compatibility. Before installation, confirm the original controller type, board revision, wiring configuration and system requirements.
The board is specified for 230 V AC, 50–60 Hz and 24 V DC supply arrangements. Its documented output limits include a maximum servo-driver output of 1.5 A at 220 V AC and a maximum limit-alarm output of 2.0 A at 24 V DC. These ratings must be applied according to the original equipment documentation.
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | Rolls-Royce Marine |
| Model | WRC1021D |
| Product type | Remote controller / valve control circuit board |
| Application | Marine deck machinery control |
| Supply voltage | 230 V AC, 50–60 Hz; 24 V DC |
| AC power consumption | 0.04 A at approximately 220 V AC, with no servo valves connected |
| DC current consumption | Up to 4.0 A at 24 V DC, depending on output limit alarms |
| Maximum servo-driver output | 1.5 A at 220 V AC |
| Maximum limit-alarm output | 2.0 A at 24 V DC; absolute maximum rating |
| Board dimensions | 100 × 160 mm |
| Board format | Eurocard |
| Weight | Approximately 385 g |
| Technology | Surface-mount device (SMD) design |
| Replacement association | Earlier WRC1021 boards; verify installation-specific compatibility |
Engineering Selection Highlights
- Remote control functionality: Intended for compatible marine machinery control applications involving command and feedback signals.
- Servo-driver output: Supports a documented maximum output rating of 1.5 A at 220 V AC.
- Limit-alarm output: The documented maximum is 2.0 A at 24 V DC and must not be exceeded.
- Dual supply specifications: Confirm the required AC or DC supply arrangement for the actual installation.
- Eurocard form factor: The documented 100 × 160 mm board dimensions support physical identification and replacement planning.
- Legacy equipment replacement: Confirm that the WRC1021D is approved for the installed WRC1021 system and its specific configuration.
Detailed Product Overview
Remote controller architecture
The WRC1021D is a circuit-board-based remote controller for compatible marine machinery. Its control operation uses command and feedback signals to support the intended machinery movement or valve-control function. Exact signal routing and operating logic depend on the connected equipment and system configuration.
Electrical output and load requirements
The controller has documented maximum ratings for servo-driver and limit-alarm outputs. These limits are essential when evaluating a replacement or troubleshooting an existing installation. The maximum values should not be interpreted as recommended continuous operating loads without checking the manufacturer’s instructions.
Replacement and maintenance
The WRC1021D is documented as a replacement for the earlier WRC1021 board. Before ordering, compare the installed model, serial number, revision, connector arrangement and application. Although published instructions describe mechanical and functional compatibility with earlier WRC1021 boards, the actual installation must still be checked against the relevant equipment documentation.
Calibration and commissioning
After replacement, verify the command and feedback signals, operating limits, alarm behavior and machinery response. Calibration should follow the specified procedure, with the machinery placed in the required safe condition before adjustments are made. Testing should be performed by personnel qualified to service the relevant marine control system.
WRC1021D
WRC1021D
System Compatibility & Integration Requirements
The WRC1021D is associated with Rolls-Royce Marine deck machinery and remote valve control equipment. Correct integration depends on the original system design and the connected control hardware.
| Integration item | Requirement |
|---|---|
| Host equipment | Verify the installed deck machinery or valve control system |
| Previous controller | Compare against the original WRC1021 board and system documentation |
| Power supply | Confirm whether the installation requires the specified AC or DC supply |
| Servo-driver circuits | Verify load requirements against the 1.5 A maximum rating at 220 V AC |
| Limit-alarm circuits | Verify loads against the 2.0 A absolute maximum at 24 V DC |
| Command and feedback signals | Confirm signal types, potentiometer connections and calibration requirements |
| Mechanical installation | Check board dimensions, mounting and connector arrangement |
| Commissioning | Follow the applicable calibration and functional testing procedures |
Do not assume that mechanical fit alone establishes electrical compatibility. Confirm the complete wiring and control arrangement before replacing the board.
Dimensions, Mounting & Connection Notes
The WRC1021D has a documented board size of 100 × 160 mm and uses a Eurocard format.
Before installation, verify:
- Board orientation and mounting arrangement.
- Connector locations and terminal assignments.
- Required AC or DC supply connections.
- Servo-driver and limit-alarm wiring.
- Command and feedback potentiometer connections.
- Board revision and serial number.
Calibration may be required following controller replacement or changes to the feedback potentiometer. Use the applicable equipment instructions and qualified marine service procedures.
Applications & System Role
The WRC1021D is associated with marine deck machinery remote control and servo valve control applications.
Typical equipment contexts include:
- Marine winch control systems.
- Hoisting and lowering machinery.
- Remote valve actuation.
- Deck machinery control and feedback circuits.
- Maintenance of legacy Rolls-Royce Marine control equipment.
The specific machinery function and operating sequence depend on the vessel’s installed system and control configuration.
Frequently Asked Questions
1. What is the Rolls-Royce WRC1021D?
It is a marine remote controller circuit board associated with deck machinery and servo valve control applications.
2. What is the power supply requirement?
Published technical instructions specify 230 V AC at 50–60 Hz and 24 V DC. Confirm the required supply arrangement for the particular installation before connecting power.
3. What is the maximum servo-driver output rating?
The documented maximum servo-driver output is 1.5 A at 220 V AC.
4. What is the limit-alarm output rating?
The maximum limit-alarm output is 2.0 A at 24 V DC, specified as an absolute maximum rating.
5. What are the board dimensions?
The board measures 100 × 160 mm and uses a Eurocard format. Its documented weight is approximately 385 g.
6. Can the WRC1021D replace the older WRC1021?
Published documentation describes the WRC1021D as mechanically and functionally compatible with earlier WRC1021 boards. Verify the host equipment, revision and wiring before replacement.
7. Does the board require calibration after replacement?
Calibration may be necessary after replacing the controller or changing the feedback potentiometer. Follow the applicable equipment instructions and approved safety procedures.
8. What should be checked before purchasing?
Confirm the exact model, board revision, serial number, supply arrangement, output ratings, connectors and compatibility with the installed deck machinery system.
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