Product Short Description
Product Overview
Special motion control expansion module matched with Mitsubishi FX series PLC, provides independent multi-axis high-speed pulse output for stepping motor and servo drive positioning control, realizes linear interpolation, electronic cam, fixed-length cutting multi-axis linkage motion functions.
Description
Technical Specifications
- Supported host: All MELSEC-F FX1S/FX1N/FX2N/FX3G/FX3U series PLC main units
- Control axis quantity: 6 independent motion axes per module
- Maximum pulse output frequency: 100 kHz per axis differential signal output
- Pulse output mode: PULSE/DIR pulse direction control, CW/CCW dual pulse mode compatible
- External signal interface: Position limit switch input, zero return origin signal input, servo ready/alarm signal input
- Power supply: Derived from PLC main unit expansion bus, no separate external power required
- Module width: 2 TE standard expansion module size
- Operating temperature: 0°C ~ +55°C
- Dimensions: 87 mm × 90 mm × 43 mm
- Net weight: 0.045 kg
Function Features
- Independent hardware motion control chip, motion operation does not occupy PLC main CPU scan cycle resources
- Built-in rich motion control instructions: absolute/relative positioning, constant speed operation, origin return, linear interpolation two-axis linkage
- Electronic cam function for packaging, printing fixed-length cutting synchronization control
- Hardware overtravel positive/negative limit signal lock, immediate stop motion when limit triggered
- Real-time servo alarm signal detection, quickly stop pulse output to protect mechanical equipment
- Pulse output differential signal drive, strong anti-interference for long-distance servo wiring up to 100 m
- Online real-time monitoring of current position, pulse remaining count, motion speed via PLC data registers
- Daisy-chain expansion bus connection, multiple FX-316 modules can be cascaded on one FX PLC host
Application Scenarios
Automatic packaging machine multi-axis servo positioning, printing equipment roller synchronization control, lithium battery winding machine, CNC small drilling/milling auxiliary axis control, textile warp knitting machine motion linkage, automated cutting machine fixed-length positioning, robot small linear sliding table multi-axis coordination.
Performance Parameters
- Positioning repeat accuracy: ±1 pulse count
- Acceleration/deceleration curve: S-curve smooth acceleration to reduce mechanical impact
- External input signal response speed: ≤1 ms
- Differential pulse output driving capability: 26 LS-TTL standard differential signal
- Anti-interference performance: Compliant IEC 61000-4-2 electrostatic discharge standard
Material Composition
- Module housing: Black flame retardant ABS plastic
- Motion control core: Special ASIC motion processing chip
- Signal drive circuit: Differential line driver isolation chip
- Expansion bus connector: Gold-plated phosphor bronze contact pins
- Terminal wiring block: Spring copper alloy push-in terminals
Structural Characteristics
Side plug-in expansion module structure, left side bus connector inserted into FX PLC main unit expansion slot, front panel multi-channel signal wiring terminal block. Internal circuit separate motion control chip zone and signal isolation drive zone, metal shielding layer between bus power circuit and pulse output circuit. Front panel LED indicators for each axis pulse output status, limit signal input status, module fault alarm.
Working Principle
PLC main unit transmits motion control parameter commands (target position, speed, acceleration, interpolation mode) to FX-316 module via expansion bus. Independent motion ASIC chip inside module generates high-speed differential pulse and direction signal according to command parameters, outputs to servo/stepper drive to control motor rotation angle and speed. External limit switch and servo alarm signals are collected via isolated input terminals, hardware logic immediately cuts off pulse output once abnormal signal detected to trigger emergency stop. Real-time current position value fed back to PLC data registers for upper program logic judgment and position monitoring.
Installation Requirements
- Directly plug into FX series PLC main unit side expansion slot, lock plastic buckle to avoid loose contact during vibration
- Servo pulse wiring use double shielded differential cable, shield layer single-point grounding at PLC cabinet end
- Maximum 3 FX-316 modules cascaded on single FX3G PLC host, total axis control up to 18 axes
- Reserve 10 mm gap between adjacent expansion modules for heat dissipation
- Do not install module within 50 mm distance of high-power frequency converters
Use & Maintenance Precautions
- Differential pulse cable cannot be parallel laid with AC power cable, will cause pulse signal distortion and positioning deviation
- Do not exceed maximum 100 kHz pulse output frequency, over-frequency leads to positioning loss
- Check front panel axis status LED during equipment startup to confirm limit signal wiring correctness
- If positioning deviation occurs, inspect differential cable shielding integrity and terminal wiring tightness
- Cut off PLC main unit power before plugging/unplugging FX-316 expansion module to avoid bus chip damage
- Avoid oil mist, dust accumulation on module front terminals in production workshop environment
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