Acromag IP440-1 Isolated Digital Input Module

The Acromag IP440-1 is a 16-channel isolated digital input module engineered for industrial automation and control systems. It acquires digital signals across 0–30 VDC with 500 VDC channel-to-channel and channel-to-ground isolation, delivering 10 ms typical response time and configurable digital filtering. Individual LED status indicators and reverse voltage protection provide real-time feedback and circuit safeguarding in harsh environments.

Technical Specifications

• Channels: 16 isolated digital inputs


• Input Voltage Range: 0–30 VDC


• Isolation Voltage: 500 VDC (channel-to-channel and channel-to-ground)


• Input Current Draw: 5 mA maximum per input at 30 VDC


• Response Time: 10 ms typical (on-to-off and off-to-on transitions)


• Input Signal Thresholds: ON state >15 VDC; OFF state <5 VDC


• Power Consumption: <2 W internal; external 24 VDC supply required for signal conditioning


• Temperature Range: −40°C to +85°C operating; −40°C to +85°C storage


• Humidity: 0% to 95% non-condensing

Key Features

• Configurable software-selectable digital filtering


• LED status indicators for each input channel


• Integrated reverse voltage protection on input circuitry


• Removable screw terminal blocks (14–22 AWG wire rated)


• DIN rail mountable (35 mm standard)


• Rugged industrial enclosure for demanding environments

Typical Applications Digital signal acquisition in industrial automation, PLC interfacing, process control systems, and machinery monitoring requiring isolated inputs with noise immunity and electrical isolation.

Compatibility & Integration Designed to interface with Acromag's data acquisition and control systems, industrial controllers, and PLCs accepting 0–30 VDC digital inputs. Compatible with Acromag's 400-series configuration software for parameter setup and filtering configuration.