May 13, 2026

Product Specification – DF8203490-A0

DF8203490-A0 is a dedicated memory and position control circuit board for Yaskawa Yasnac CNC systems. Mainly responsible for CNC system program storage, parameter saving, axis position operation and data buffering processing. With battery-backed memory design, it can keep programs and parameters from being lost after power off, and cooperate with CPU board to complete interpolation calculation and position feedback processing.

Description

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Product Specification – DF8203490-A0

1. General Information

Manufacturer：Yaskawa Yasnac
Part No.：DF8203490-A0
Equivalent board model：JANCD-PC20 / JANCD-MM20
Product Type：CNC system memory & position control PCB board
Application：Yasnac M64、M65、i80、i100 series CNC controller
Status：Discontinued legacy board, used for equipment maintenance and one-to-one replacement

2. Product Overview

DF8203490-A0 is a dedicated memory and position control circuit board for Yaskawa Yasnac CNC systems.

Mainly responsible for CNC system program storage, parameter saving, axis position operation and data buffering processing.

With battery-backed memory design, it can keep programs and parameters from being lost after power off, and cooperate with CPU board to complete interpolation calculation and position feedback processing.

3. Main Functions

CNC system program, parameter, tool compensation data storage and management
Axis real-time position calculation and coordinate data processing
Battery power-off data retention function
Internal system bus communication and data interaction
Memory self-check and fault alarm detection
Position loop auxiliary operation and signal isolation processing

4. Electrical & Environmental Parameters

Working power supply：DC 5V (provided by CNC power supply rack)
Working temperature：0℃～+45℃
Storage temperature：-20℃～+65℃
Humidity：5%～85%RH, non-condensing
Anti-vibration：Industrial standard 0.5g，10Hz～60Hz
Feature：ESD sensitive device, need anti-static operation

5. Compatibility & Replacement Notes

Applicable equipment：Yasnac M64/M65/i80/i100 CNC lathes, machining centers and other machine tools
Replacement requirement：Only the same model DF8203490-A0 can be replaced one-to-one
Installation：Must cut off the total power supply first, operate with anti-static measures, plug and play without additional parameter setting
Matters needing attention：It is recommended to replace the backup battery of the board together during replacement to avoid data loss.

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