1. General Description

2. Basic Specifications

• Compatible System: YASNAC I80 / I80M (Turn/Mill)

• Backplane: JANCD‑FC001 (1 full‑size slot)

• Dimensions: 267 × 140 mm (compatible with FC500/FC510/FC610)

• Power Supply: DC 24 V ±10%, ~0.8 A

• Operating Temperature: 0 °C to +45 °C

• Storage Temperature: −20 °C to +60 °C

3. Key Features (vs. FC610)

A. Spindle Control (Enhanced)

• 2 independent spindle channels (analog/digital compatible)

• Response time ≤1.5 ms (FC610: ≤2 ms)

• Positioning accuracy ±0.0005° (FC610: ±0.001°)

• Supports αi‑B / βi‑B high‑speed spindle drives

B. Servo Axis Expansion

• Adds 2 high‑speed servo axes (max system axes: 8)

• Servo loop update 1.2 kHz (FC610: 1 kHz)

• Dual‑motor synchronization for gantry/heavy‑duty structures

C. High‑Speed Communication

• CN61 bus to FC500 at 10 Mbps (FC610: 8 Mbps)

• Alarm response ≤0.8 ms

• Full compatibility with FC510 (memory) and FC520 (communication)

4. System Configuration & Compatibility

Mandatory Boards

• CPU: FC250 (standard) / FC251 (high‑end)

• PLC Core: FC500 (required)

• Expansion: FC510 (opt), FC520 (opt)

• Backplane: FC001 (min. 3 full slots)

Typical Setup

• 5‑axis turn‑mill: FC250 + FC500 + FC620 + FC430 (128 I/O)

• 6‑axis machining center: FC251 + FC500 + FC510 + FC520 + FC620 + FC440 (160 I/O)

Limitations

• Max 1 × FC620 per system

• Occupies 1 full slot; cannot coexist with FC610

5. Common Faults & Alarms

• A.620 Spindle Bus Error: CN61 loose connection, FC500 communication fault, bus IC damage

• Spindle Positioning Drift: Encoder signal loss, FC620 counter module fault

• Servo Sync Overflow: Axis parameter mismatch, servo loop overload

• No LED: 24 V power loss, internal fuse blown, backplane contact issue

6. Applications

• High‑precision 5/6‑axis turn‑mill centers (dual spindle + B/C axis)

• Multi‑spindle automation lathes (e.g., Hitachi Seiki HT23J)

• Gantry machines with dual‑motor synchronization

• I80 system upgrades for faster spindle/servo performance