JASP-WRCA01
June 02, 2026

JASP-WRCA01

JASP-WRCA01 is original Yaskawa Motoman SERVOPACK main servo control PCB board exclusively matched with XRC series robot servo amplifier unit, core control daughterboard inside integrated six-axis servo pack assembly, paired with JUSP-RCP01 series control power supply, internal converter module and single-axis servo amplifier modules to constitute complete six-axis servo driving system for XRC robot body (UP6, HP6, SK series etc.). It receives position command data from MCP main CPU board via cabinet internal bus, executes closed-loop servo algorithm for up to 6 robot joint axes, manages main power converter, each axis power amplifier and JANCD-XTU01 contactor I/O control board synchronously, widely used for arc welding, spot welding, handling and assembling XRC robot maintenance replacement parts. The board complies with CE & RoHS industrial certification after strict aging and EMC anti-interference testing.

Description

1. Product Overview

JASP-WRCA01 is original Yaskawa Motoman SERVOPACK main servo control PCB board exclusively matched with XRC series robot servo amplifier unit, core control daughterboard inside integrated six-axis servo pack assembly, paired with JUSP-RCP01 series control power supply, internal converter module and single-axis servo amplifier modules to constitute complete six-axis servo driving system for XRC robot body (UP6, HP6, SK series etc.). It receives position command data from MCP main CPU board via cabinet internal bus, executes closed-loop servo algorithm for up to 6 robot joint axes, manages main power converter, each axis power amplifier and JANCD-XTU01 contactor I/O control board synchronously, widely used for arc welding, spot welding, handling and assembling XRC robot maintenance replacement parts. The board complies with CE & RoHS industrial certification after strict aging and EMC anti-interference testing.

2. Core Functional Description

2.1 Servo Motion Control Function

High-speed onboard MCU receives trajectory command from robot main CPU board, completes position loop, speed loop and current loop closed-loop operation for max 6 manipulator servo axes, calculates real-time motor control signals and outputs to each independent axis power amplifier module. Collects differential encoder feedback signal from each servo motor, feeds back actual axis position to main controller to realize high-precision positioning and continuous path interpolation control for robot arm. Built-in real-time fault diagnosis circuit monitors converter overvoltage/undervoltage, amplifier overcurrent, encoder cable breakage, power supply abnormality and contactor control failure; corresponding alarm codes will be transmitted to teach pendant once fault occurs for quick troubleshooting.

2.2 Auxiliary Control Logic

Realizes on/off control of main DC power converter inside SERVOPACK, controls electromagnetic contactor on JANCD-XTU01 I/O board to switch servo main power supply according to robot safety circuit interlock signal; reserves internal digital signal channel for servo ready status output and external equipment interlock feedback signal exchange.

3. Electrical Parameter Specification

3.1 Power Input

Working DC power supplied exclusively by JUSP-RCP01AAB servo control power module: +5V, +7V, +15V, -15V multi-group isolated DC output;
  • +5V: Rated output 5A for core logic circuit

  • +7V: Rated output 2.5A for drive pre-drive circuit

  • +15V: 1.3A; -15V:0.6A for analog signal & encoder circuit

    Front-end single-phase AC input of matched power supply: AC200~220V (+10%/-15%, AC170V~242V), 50/60Hz(48~62Hz).

3. Power Consumption & Physical Size

  • Rated overall power consumption: approx 22W; PCB dimension:150mm(L)×100mm(W), total net weight:0.45kg

  • All encoder signal adopts differential transmission with built-in surge suppression circuit to resist welding workshop high-frequency electromagnetic interference.

4. Environmental Working Conditions

  • Continuous operating ambient temperature: 0℃ ~ +55℃ inside closed servo cabinet

  • Storage temperature range: -25℃ ~ +70℃; non-operating extreme storage: -55℃~+125℃

  • Relative humidity:30%~80%RH, no condensation allowed; Protection grade IP20 (only install inside sealed SERVOPACK housing)

  • Max applicable altitude ≤1000m without power derating; anti-vibration level ≤0.5G for production line vibration environment; forbidden to mount at site with corrosive gas, conductive metal dust and welding spatter.

5. Connector & LED Indicator Definition

5.1 Wiring Interface

  1. Backplane gold finger socket: plug into internal SERVOPACK backplane to obtain multi-group DC working power and internal bus communication with converter/amplifier modules;

  2. External terminal connectors: multi-channel encoder feedback terminals for six-axis motor cable connection, one group interlock signal terminal connecting to JANCD-XTU01 contactor board; reserved factory calibration pin header unused under normal operation.

5.2 Onboard LED Status

  • PWR(Green): Steady ON = +5V main logic power normal; OFF = control power supply failure or onboard fuse blown;

  • RUN(Green): Periodic flashing = MCU system running normally and bus communication ok with main CPU; always OFF = core firmware damage or hardware breakdown;

  • ERR(Red): Steady ON = serious servo fault (overcurrent, encoder open, converter abnormal); intermittent flash = transient wiring interference or momentary safety trigger;

  • AX-Yellow: Corresponding lamp flickers when matched axis motor runs; OFF = channel cable break or amplifier power loss.

6. Installation & Replacement Operation Guide

  1. Cut off total cabinet AC input power before disassembly; wait ≥20min for high-voltage capacitor full discharge inside SERVOPACK to avoid residual voltage component damage;

  2. Unfix SERVOPACK housing screws, pull out old control board horizontally after disconnecting all external terminal cables; clean backplane socket dust with anhydrous alcohol;

  3. Align new JASP-WRCA01 gold finger with backplane slot and insert fully, lock fixed buckle, reconnect all encoder and interlock wiring in original definition;

  4. Power on cabinet after assembly, enter robot teach mode to execute servo axis origin calibration one by one before trial running.

7. Common Fault Troubleshooting

  1. All PWR lamp off: Check JUSP-RCP01AAB control power AC input voltage and onboard protection fuse of WRCA01 board; replace blown fuse with same specification;

  2. Normal power but RUN always off: Clean gold finger oxidation dirt; replace board if fault persists;

  3. Single axis ERR lamp constant lighting: First inspect corresponding motor encoder cable open/short; replace WRCA01 board channel when peripheral wiring is intact;

  4. Random intermittent ERR flicker: Check servo cabinet internal damp or loose wiring terminal.

8. Routine Maintenance Rules

All plugging & maintenance operations must be completed under full power-off state; every six-month regular maintenance: wipe PCB dust with dry lint cloth, inspect aging and loose of all motor encoder cables; once internal circuit hardware damaged, full board replacement is recommended instead of partial component disassembly repair.

9. Applicable Matching Equipment

Matching Yaskawa XRC series six-axis robot servo pack: UP6, HP6, SK16, ER series manipulator, matched with MRC/XRC controller cabinet and JANCV-MCP series main CPU board, JARCR-XEB01 external axis expansion board.


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