KoYo F4-16DA-1

Description

Technical Specifications

• I/O Channel Configuration: 16 × Single-Ended Analog Current Output Channels, uniform 4–20 mA signal range
• Signal Resolution: 12-bit digital-to-analog conversion resolution
• Refresh Performance: All 16 channels fully refreshed within single PLC CPU scan cycle
• Galvanic Isolation: Analog output circuit fully galvanically isolated from PLC internal logic backplane bus
• Power Supply Requirements: Powered via DL405 PLC backplane bus; no external auxiliary power supply required
• Output Load Capacity: Maximum load resistance per channel 500 Ω at full 20 mA output current
• Response Time: ≤ 1.5 ms per channel signal settling time
• Environmental Ratings:
  • Operating Temperature: 0 °C ~ +60 °C
  • Storage Temperature: -20 °C ~ +70 °C
  • Protection Class: IP20 (cabinet internal mounting only)
• Mechanical Dimensions: 120 mm (H) × 80 mm (D) × 30 mm (W)
• Net Weight: 0.25 kg
• Certifications: CE, UL508 industrial control equipment certification

Function Features

1. 16 independent analog output channels without jumper configuration; factory preset fixed 4–20 mA output range
2. Detachable removable terminal block design; module replacement without re-terminating field instrument wiring
3. Full electrical isolation between analog field circuit and PLC digital logic circuit to suppress ground loop interference
4. No hardware jumpers required for channel configuration; all range and fault parameters set via DL405 PLC programming software
5. Channel overcurrent hardware protection for each individual output circuit
6. Front panel LED power operation indicator; single fault alarm LED for collective channel overcurrent error reporting
7. Compatible with all slot positions of DL405 CPU base unit and all DL405 expansion rack slots

Material Composition

• Outer Housing: ABS industrial impact-resistant plastic
• Circuit Board: Standard FR4 fiberglass PCB with tin-plated contact edge connectors for backplane bus
• Terminal Block: Polycarbonate plastic base with copper screw terminals
• Conversion Core Components: Low-drift 12-bit DAC integrated circuits, isolated signal transformers, current-limit power resistors

Structural Characteristics

• Compact 30 mm width rack-mount form factor for high PLC rack packing density
• Edge connector backplane interface for direct plug-in to DL405 base rack / expansion rack slots
• Front removable spring-cage terminal block secured by two locking screws for rapid wiring separation
• Single shared power LED and collective fault alarm LED on front panel
• Vertical channel terminal layout grouped in 4-channel blocks for orderly wiring management
• Integrated plastic side locking tabs for secure fixed installation inside PLC rack

Working Principle

1. DL405 CPU writes digital setpoint values to module internal holding registers via backplane bus during PLC scan cycle
2. 12-bit DAC chips convert digital register values to proportional analog current signals within 4–20 mA range for each channel
3. Isolation transformers separate analog field circuit and PLC digital logic circuit to eliminate ground loop voltage offset error
4. Per-channel current limiting resistors restrict output current to maximum 22 mA upon field wiring short circuit, triggering front panel fault LED alarm
5. Analog current signals are transmitted to field proportional control devices (control valves, analog meters, variable frequency drives) for continuous process regulation

Advantage Highlights

1. 16-channel high-density analog output layout reduces total rack slot occupation compared to 4/8-channel AO modules
2. Detachable terminal block drastically shortens module replacement maintenance time without field wire rework
3. Full galvanic isolation eliminates ground loop signal distortion common in multi-instrument process control loops
4. Jumper-free design eliminates human configuration error risk during commissioning
5. Backplane-powered design removes external 24 VDC power wiring requirement for the module itself
6. Universal compatibility with all DL405 series CPU and expansion rack hardware

Applicable Industries

General manufacturing process automation, food & beverage batch production, water treatment plant flow/pressure control, HVAC building automation, packaging machinery proportional valve control, textile industrial processing lines, metal processing temperature regulation systems

Installation Requirements

1. Install only inside DL405 series PLC base rack or certified DL405 expansion rack slots
2. Maintain minimum 5 mm vertical clearance above and below module for heat dissipation
3. Field analog output wiring must use shielded twisted pair cables; cable shield grounded at cabinet earth bar only
4. Total load resistance of each channel’s field instrument must not exceed 500 Ω
5. PLC cabinet operating humidity controlled at 10% – 90% non-condensing
6. Mount surge protection devices on field wiring runs longer than 15 meters

Usage Precautions

1. Do not operate module outside 0 °C ~ +60 °C cabinet ambient temperature range; high temperature causes permanent DAC drift
2. Avoid connecting AO channels to loads with resistance exceeding 500 Ω; full-scale output current will not be achieved
3. Disconnect all field terminal wiring before extracting module from PLC rack to prevent short-circuit transients
4. Do not mix analog signal wiring with high-power AC motor wiring in same cable trunking
5. Annual calibration recommended using certified 4–20 mA process calibrator to maintain output accuracy
6. Do not use module in explosive hazardous area environments; no ATEX / IECEx intrinsic safety certification
7. Excessive torque on terminal block screws (over 0.6 N·m) cracks plastic terminal base and damages internal PCB traces