Product Specification – DF8203751-A0

1. General Information

• Manufacturer: Yaskawa Yasnac

• Part Number: DF8203751-A0

• Equivalent Board: JANCD-IO21 / JANCD-IO21B

• Product Type: CNC System Input / Output Control PCB Board

• Applicable System: Yasnac M64, M65, i80, i100 series CNC controller

• Product Status: Discontinued legacy industrial board, used for CNC equipment maintenance and one-to-one replacement

2. Product Overview

3. Main Functions

1. Digital input signal acquisition from machine limit, proximity switch, sensor and safety interlock

2. Digital output drive control for relay, contactor, solenoid valve and fan

3. Optical isolation of all input and output signals to improve anti-interference ability

4. Data communication with CNC main board through internal system bus

5. I/O signal self-diagnosis and fault status feedback

6. Distribution and logic processing of peripheral auxiliary machine signals

4. Technical & Environmental Parameters

• Working Power Supply: DC 5V / DC 24V

• Isolation Mode: Optocoupler isolation for each channel

• Operating Temperature: 0℃ ~ +45℃

• Storage Temperature: -20℃ ~ +65℃

• Relative Humidity: 5%～85%RH, non-condensing

• Vibration Resistance: Industrial grade 0.5g, 10Hz～60Hz

• Feature: ESD sensitive, anti-static operation is required

5. Compatibility & Replacement Notes

• Applicable Equipment: Yasnac M64, M65, i80, i100 CNC lathes, machining centers and automation equipment

• Replacement Rule: Must use the same model DF8203751-A0 for one-to-one replacement

• Installation Requirement: Cut off power supply completely before disassembly and assembly; operate with anti-static protection

• Feature: Plug and play after replacement, no need for additional program burning or parameter setting