Dixell IPG315D

Core Function Features

1. Massive multi-type I/O resources: 20 opto-isolated digital inputs + 10 configurable analog inputs + 15 multi-function relay/SSR outputs
2. Analog input universal compatibility: NTC/PTC temperature probes, PT1000, 0–5V, 4–20mA process transmitters
3. Multi-type configurable analog outputs: 0–10V voltage, 4–20mA current, PWM signal for electronic expansion valve drive
4. Dual independent RS485 communication bus: Modbus master/slave, BACnet MSTP; built-in Ethernet for BACnet TCP/IP remote monitoring
5. CANbus expansion interface for connecting additional I/O expansion modules to expand system capacity
6. Built-in real-time clock with power-off backup, automatic timing defrost, energy-saving cycle scheduling
7. Multi-group independent alarm relay outputs, support graded fault alarm and remote notification
8. Full free programmable logic via PC configuration software, support complex refrigeration unit interlock control logic
9. Remote touch terminal support, can connect up to two local operation displays within 100m cable distance
10. Overload, over-temperature, sensor break and short-circuit multi-layer hardware protection

Technical Performance Parameters

• Power Supply: 24V AC/DC SELV safety extra-low voltage, power consumption 18W
• Digital Inputs: 20 channels 24V opto-isolated dry contact input
• Analog Inputs: 10 configurable universal sensor channels
• Relay Outputs: 10×5(2)A 250VAC SPST mechanical relays + 5×SSR solid-state outputs
• Analog Control Outputs: 6 channels configurable 0–10V / 4–20mA / PWM
• Communication Interfaces: 1×Ethernet, 2×RS485, 1×CANbus, 1×USB local configuration port
• Operating Temperature: -25°C ~ +50°C
• Storage Temperature: -40°C ~ +80°C
• Humidity Tolerance: 20%–85% RH non-condensing
• Pollution Degree Class 2, UL94 V0 flame retardant certification

Material & Structural Characteristics

• Housing: Flame-retardant black ABS plastic DIN rail mounting shell, anti-aging UV resistance
• Circuit PCB: Double-sided industrial PCB with partial conformal coating for refrigeration high-humidity environment
• Terminal Blocks: Large current capacity screw spring terminals, clear printed channel identification labels
• Mounting Standard: 10-module width 35mm standard DIN rail installation
• Dimensions: 180mm × 110mm × 60mm
• Net Weight: 0.72kg

Working Principle

1. Collect temperature, pressure, liquid level and valve feedback signals from refrigeration system sensors through analog/digital input channels
2. Internal programmable logic CPU executes user-defined control algorithms: compressor start-stop interlock, electronic expansion valve flow regulation, fan speed adjustment, timing defrost
3. Control signals output via relay/SSR/analog channels to drive refrigeration unit actuators (compressors, water pumps, expansion valves, cooling fans)
4. Real-time operating data and fault information upload to building SCADA system or remote monitoring platform via Ethernet BACnet IP
5. When sensor abnormal or unit protection fault triggers, independent alarm relay outputs activate local buzzer alarm and remote fault notification

Installation Requirements

1. Standard 35mm DIN rail installation inside HVAC control cabinet, lock with rail fixing clip
2. Separate low-voltage sensor signal cables and high-current compressor power cables into different wiring ducts
3. All temperature probe cables use shielded twisted-pair, single-point grounding at controller cabinet
4. Maintain minimum 10mm gap between multiple IPG315D units for heat dissipation
5. Cabinet must install ventilation slits to avoid over-temperature operation in summer high ambient temperature

Application Scenarios

• Large supermarket multi-circuit refrigerated display cabinet central control system
• Commercial building air-cooled/water-cooled chillers and heat pump unit integrated control
• Industrial low-temperature cold storage, freeze warehouse refrigeration automatic control
• Data center precision air conditioner constant temperature and humidity control
• Food processing factory production line cooling process control

Operation & Maintenance Notes

1. Complete program backup via USB before modifying unit control logic to prevent program loss
2. Do not connect AC high voltage directly to analog sensor input channels, will burn input conditioning circuit
3. Calibrate temperature probe measurement offset every 12 months to guarantee refrigeration temperature control precision
4. Regularly clean cabinet ventilation slits to avoid dust accumulation leading to controller overheating alarm
5. Replace internal RTC backup battery every 4 years to maintain timing defrost function after power failure