I. Basic Information

Compatible System: YASNAC I80 / I80M (must be paired with FC250/FC251 mainboard)

Assembly Backplate: JANCD-FC001 (standard backplate for I80, single slot)

Board Size: Full-length board (same as FC260/FC240, approximately 267×140mm)

Weight: Approximately 1.5 kg

Power Supply: DC 24V ±10%

Version: FC310-1 (final production version, most common)

II. Core Functions (Single-axis Spindle Dedicated)

1. Independent Spindle Control (Core)

Control 1 spindle (Mechatrolink-II bus, dedicated spindle channel)

Spindle Modes: Speed Control, Position Control (Spindle Direction / Turret), Rigidity Thread Cutting (M06/M19)

Spindle Positioning Accuracy: ±0.01°, suitable for machining center indexing, turning threads

Synchronization with Feed Axis: Can be linked with FC300/FC260 feed board to achieve spindle-feed synchronization (such as thread cutting)

2. Interface Configuration (Spindle Dedicated)

CN34: Spindle servo output (Mechatrolink-II, D-Sub 50 pin)

CN35: Spindle encoder feedback (position / speed signal)

CN20: System parallel bus (connects to backplate, communicates with FC250/FC251)

LED Diagnostic Lights: Power, Bus, Spindle Status, Alarm, quick fault location

3. System Expansion Value

Separate Spindle and Feed Control: Reduces mainboard load, improves spindle response speed

Expand Spindle Quantity: I80 basic system can have up to 1 spindle, with FC310 expansion to 2 spindles (double-spindle lathe)

Independent Fault Isolation: Spindle failure does not affect feed axis operation, better processing continuity

III. Compatibility and Pairing

✅ Required Combination (Spindle Expansion Scenario)

Mainboard: JANCD-FC250 (standard) / FC251 (high-end)

Spindle Board: JANCD-FC310-1 (1 board = +1 spindle)

Feed Board: FC300B (3 axes) / FC260 (8 axes) (selected based on feed axis requirements)

PLC Board: JANCD-FC210 / FC211

Backplate: JANCD-FC001

✅ Key Limitations

Cannot be used alone: Must rely on FC250/FC251 power supply and scheduling

Only I80 System: Incompatible with I60/C70 and other old systems

Spindle Limit: I80 system can support up to 2 FC310 (2 spindles)

IV. Core Differences between FC310 and FC300B (Spindle Board vs Feed Board) Table

Comparison item FC310 (spindle plate) FC300B (feed plate)

Control object 1 spindle (speed / position / tapping) 3 feed axes (linear / circular interpolation)

Bus protocol Mechatrolink-II (spindle-specific) Mechatrolink-II (feed-specific)

Board card length Full length (267mm) Semi-length (235mm)

Typical application Cutting spindle, machining center spindle, dual spindles 3-axis / 4-axis machining center, milling machine feed

Core value Spindle positioning, rigid tapping, spindle synchronization Multi-axis linkage, contour processing, feed synchronization

V. Common faults

A. 310 spindle bus error: CN34 interface / cable damage or spindle servo failure

Incorrect spindle orientation: CN35 encoder feedback abnormal or parameter drift

Rigid tapping failure: Spindle and feed axis synchronization parameters mismatch

24V power indicator not lit: Backplane power failure or internal fuse blown

VI. Application scenarios

I80 system machining center: Expand independent spindles to enhance rigid tapping and indexing accuracy

CNC lathe (single / dual spindles): Control spindle speed, positioning and thread cutting

Turning-milling combined machine: Spindle and feed axis linkage to achieve complex processing

Upgrade of original I80 system spindle performance: Replace old spindle plate to improve stability and response speed