YASKAWA JANCD‑CG20B（DF8202624）
Description
1. General Information
1.1 Model & Part Number
Model: JANCD‑CG20B
Part No: DF8202624
Type: 4‑axis servo control expansion board for YASNAC i80 / MX3 / PC NC CNC systems
1.2 Features
4 independent servo axes control
MECHATROLINK‑II/III communication
Ethernet 10/100 Mbps（TCP/IP）
A/B/Z phase differential encoder interface；BiSS absolute encoder support
+24 VDC power supply；overvoltage/overcurrent/short‑circuit protection
3U standard rack mount；LED status indicators（PWR/RUN/ALM）
1.3 Specifications
表格
| Item | Specification |
|---|---|
| Power Supply | +24 VDC ±10%, 1.0 A（CN5） |
| Axis Count | 4 axes（CN1～CN4） |
| Communication | MECHATROLINK‑II/III, Ethernet（10/100 Mbps） |
| Encoder | Incremental（A/B/Z, differential）；Absolute（BiSS） |
| Operating Temp | 0～55°C |
| Storage Temp | −20～70°C |
| Dimensions | 100 × 160 × 20 mm（3U） |
| Weight | Approx. 0.35 kg |
2. System Configuration
2.1 Applicable CNC Systems
YASNAC i80 series（i80M / i80L）
YASNAC MX3 series
YASNAC PC NC series
2.2 Board Layout & Connectors
| Connector | Function |
|---|---|
| CN1～CN4 | Servo axis 1～4 interface（PWR/ENC/I/O） |
| CN5 | +24 VDC power input |
| CN6 | Ethernet（RJ45, 10/100 Mbps） |
| CN7 | MECHATROLINK communication port |
| LED1 | PWR（Power ON：Green） |
| LED2 | RUN（Normal operation：Green blinking） |
| LED3 | ALM（Alarm：Red ON） |
3. Installation
3.1 Mechanical Installation
Install into 3U slot of YASNAC CNC rack.
Fix with screws；torque：0.8～1.0 N·m.
Maintain ≥20 mm clearance around board for ventilation.
Avoid mounting near heat sources or strong electromagnetic interference.
3.2 Environmental Requirements
Ambient temp：0～45°C（operation）；−20～60°C（storage）
Humidity：30%～85% RH（non‑condensing）
Vibration：≤0.5 G（10～500 Hz）
Pollution degree：2（indoor use）
4. Wiring
4.1 Power Supply（CN5）
表格
| Pin | Signal | Description |
|---|---|---|
| 1 | +24V | Power input +24 VDC |
| 2 | GND | Power ground |
| 3 | FG | Frame ground（connect to system ground） |
4.2 Servo Axis Interface（CN1～CN4, per axis）
表格
| Pin | Signal | Description |
|---|---|---|
| 1 | +24V | Servo power +24 VDC |
| 2 | GND | Servo ground |
| 3 | ENC_A+ | Encoder A phase +（differential） |
| 4 | ENC_A− | Encoder A phase −（differential） |
| 5 | ENC_B+ | Encoder B phase +（differential） |
| 6 | ENC_B− | Encoder B phase −（differential） |
| 7 | ENC_Z+ | Encoder Z phase +（differential） |
| 8 | ENC_Z− | Encoder Z phase −（differential） |
| 9 | ALM_IN | Servo alarm input（NPN/PNP selectable） |
| 10 | SRV_ON | Servo ON signal（output） |
4.3 Communication Wiring
4.3.1 Ethernet（CN6）
Interface：RJ45, 10/100 Mbps
Cable：CAT5e straight‑through
Default IP：192.168.1.100；Subnet：255.255.255.0
4.3.2 MECHATROLINK（CN7）
Interface：MECHATROLINK‑II/III
Cable：Yaskawa dedicated bus cable
Termination：ON（120 Ω）at last node
4.4 Wiring Precautions
Separate signal cables from power cables（≥10 cm）.
Use shielded cables for encoder/communication；connect shield to FG at both ends.
Do not run cables near high‑voltage or high‑frequency equipment.
5. Parameter Setting
5.1 Basic Axis Parameters（No.1000～1004）
表格
| No. | Parameter | Setting Range | Default |
|---|---|---|---|
| 1000 | Axis Type | 0=Servo, 1=Stepper | 0 |
| 1001 | Encoder Type | 0=Incremental, 1=Absolute | 0 |
| 1002 | Resolution | 1～131072（pulse/rev） | 131072 |
| 1003 | Max Speed | 1～6000（rpm） | 3000 |
| 1004 | Acc/Dec Time | 10～1000（ms） | 200 |
5.2 Communication Parameters
5.2.1 Ethernet
IP Address：192.168.1.100（default）
Subnet Mask：255.255.255.0
Gateway：0.0.0.0（default）
5.2.2 MECHATROLINK
Station Address：1～31（set via rotary switch on board）
Baud Rate：10 Mbps（fixed）
6. Operation & Status
6.1 LED Indicators
PWR（Green）：ON = Power normal；OFF = No power or fault.
RUN（Green）：Blinking（1 Hz）= Normal operation；OFF = Stopped or fault.
ALM（Red）：ON = Alarm present；OFF = Normal.
6.2 Normal Operation
Power on CNC system；check PWR LED ON.
Set parameters correctly；download to board.
Enable servo（SRV_ON）；RUN LED blinks.
Check encoder signals；no ALM.
7. Alarm & Troubleshooting
7.1 Common Alarms
表格
| Alarm Code | Description | Cause | Remedy |
|---|---|---|---|
| ALM01 | Overvoltage | +24V > 26.4V | Check power supply |
| ALM02 | Overcurrent | Axis current exceeds limit | Check servo motor/wiring |
| ALM03 | Encoder error | No encoder signal or mismatch | Check encoder cable/connection |
| ALM04 | Communication error | MECHATROLINK/Ethernet fail | Check cable/IP/termination |
| ALM05 | Temperature error | Board temp > 55°C | Improve ventilation |
7.2 Troubleshooting Steps
Check power supply（+24V ±10%）.
Verify all connectors are securely plugged.
Check encoder cables for damage or loose connections.
Confirm MECHATROLINK/Ethernet settings match.
Check for overheating；clean ventilation if needed.
8. Maintenance
8.1 Periodic Inspection（Every 6 months）
Clean dust from board surface and connectors（use dry air）.
Check connector tightness；re‑torque if needed.
Verify LED status；no abnormal alarms.
Check cable insulation；replace if damaged.
8.2 Replacement
Power off CNC system；wait 5 minutes for discharge.
Disconnect all cables from board.
Remove fixing screws；pull out board.
Install new board；reverse steps.
Re‑set parameters；test operation.
9. Safety Precautions
Electrical Shock Hazard：Disconnect power before wiring/maintenance.
Burn Hazard：Heatsink may be hot during operation；wait 15 min after power off.
Fire Hazard：Do not connect wrong voltage；ensure proper grounding.
Equipment Damage：Do not reverse power polarity；follow wiring diagram strictly.
10. Appendix
10.1 Dimensions（mm）
Length：160
Width：100
Height：20（3U）
10.2 Compatible Servo Drives
Yaskawa Σ‑V/Σ‑VII series（SGDV/SGD7S）
MECHATROLINK‑II/III compatible drives
10.3 Contact Information
Manufacturer：Yaskawa Electric Corporation
Website：www.yaskawa.com
Support：e‑mechatronics@yaskawa.com
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