RELIANCE WR-D4007

Core Technical Specifications

• Input Power Supply: 220 VAC 50Hz, module internal isolated 24VDC auxiliary power output
• Encoder Feedback Interface: 5V TTL incremental encoder, resolver analog speed feedback
• Analog I/O Range: ±10V command input, ±10V speed/torque analog output
• Communication Port: Dual RS232 + RS485 serial ports for PLC host communication
• Control Accuracy: Synchronous speed deviation ≤ ±0.02% full speed range
• Operating Temperature: 0°C ~ +60°C
• Storage Temperature: -20°C ~ +70°C
• Module Dimensions: 180mm × 120mm × 45mm, net weight 0.8kg
• Protection Grade: IP20 cabinet installation
• Certifications: CE, UL, RoHS industrial compliance

Functional Features

1. Multi-axis electronic line shaft synchronous control function, support master-follower motor speed ratio arbitrary setting
2. Real-time web tension closed-loop control via ±10V tension sensor analog signal input
3. Built-in overspeed, overcurrent, encoder feedback loss, communication disconnection multi-layer fault protection logic
4. Conformal coated critical circuit boards to resist cabinet humidity, dust and oil mist corrosion
5. Independent fault code logging system, store 50 groups of historical fault records for maintenance analysis
6. Modular pluggable design, hot-swap compatible with Euroflex drive rack without system full shutdown
7. Adjustable soft start/stop S-curve acceleration to eliminate web stretching and breakage during speed switching
8. On-board DIP switch for address and control mode quick configuration without upper computer software

Working Principle

1. Master motor encoder speed feedback signal transmitted to WR-D4007 module as master reference speed source.
2. Module internal DSP calculates target follower motor speed via preset electronic gear ratio, compare target speed with each follower drive encoder feedback signal to generate speed deviation.
3. Speed deviation signal converted to ±10V analog torque/speed command output to each RELIANCE servo drive unit to realize multi-motor synchronous tracking.
4. Tension sensor analog signal input forms secondary closed-loop correction to eliminate web thickness unevenness caused tension fluctuation; diagnosis circuit continuously monitors all feedback and power signals, trigger drive lockout and fault output once abnormal detected.

Structure & Material Composition

• Outer Housing: Cold rolled steel sheet metal shell, integrated DIN rail clamping buckle
• Main Control PCB: Multilayer FR4 circuit board, critical signal circuits coated with anti-corrosion acrylic conformal coating
• Interface Terminal Block: Copper gold-plated screw terminals, separate power, analog signal, encoder, communication wiring partitions
• Heat Dissipation Structure: Side integrated aluminum heat sink for power regulation chip heat exchange
• Indicator Area: Power, communication, fault, synchronous status independent LED indicator lights

Installation Requirements

1. 35mm DIN rail vertical mounting inside IP20 control cabinet, minimum 25mm gap above and below module for heat dissipation
2. Encoder signal cable use double-shielded twisted wire, cable length ≤ 40m, shield single end grounded at WR-D4007 module side
3. Power supply wiring add 2A slow-blow fuse at input terminal to prevent module short-circuit fire hazard
4. Cabinet safety ground wire connected to module housing ground screw, ground resistance ≤ 1Ω
5. Terminal screw tightening torque controlled at 0.9–1.3 N·m to avoid loose terminal heating
6. Do not install adjacent to high-power inverter modules; frequency conversion electromagnetic interference will cause synchronous jitter

Application Scenarios

Operation & Maintenance Precautions

1. Cut off 220VAC main power before module disassembly or wiring modification
2. Do not mix analog signal wiring with frequency converter power wiring in the same cable trunking
3. Clean PCB surface dust accumulation with dry compressed air every 4 months; dust short-circuit easily causes communication failure
4. If multi-motor synchronous deviation increases, check encoder cable shielding integrity and terminal tightness first
5. Ambient temperature above 60°C will trigger automatic speed limiting protection; add cabinet cooling fan for high-temperature workshop
6. Long-term shutdown storage requires sealed packaging with desiccant to prevent PCB conformal coating damp peeling