Honeywell 900H32-0102 ControlEdge 900 PLC
The Honeywell 900H32-0102 is a programmable logic controller (PLC) from the ControlEdge 900 series, designed for both process and discrete automation. It features a modular I/O design with a built-in 32-point I/O configuration (16 digital inputs, 16 digital outputs) and an embedded Ethernet port for communication. The controller is suitable for small to medium control applications such as pumping stations, conveyors, and building automation.
Processor and Memory
The 900H32-0102 uses a 32-bit ARM Cortex-A8 processor at 800 MHz. Program memory: 32 MB flash (non-volatile), data memory: 64 MB RAM. Retentive memory: 8 KB (EEPROM). Typical scan time: 10 ms for 1000 ladder steps. The real-time clock (RTC) is battery backed (CR2032, life 5 years).
Built-in I/O
16 digital inputs: 24V DC sink/source, 4 of which are high-speed (50 kHz) for counters.
16 digital outputs: transistor (NPN), 0.5A per point, 24V DC; 2 outputs are PWM capable (100 Hz).
2 analog inputs (0–10V, 12-bit).
All I/O points have LED status indicators and are optically isolated from the logic (1500 Vrms).
Communication Ports
2 x Ethernet (10/100) with switch function, supporting Modbus TCP, EtherNet/IP, and PROFINET.
1 x RS-232 (9-pin D-sub) for serial programming or ASCII.
1 x RS-485 (terminal block) for Modbus RTU (master/slave).
1 x USB 2.0 host (Type A) for data logging.
Expansion
The controller can be expanded with up to 8 Honeywell 900 Series I/O modules (digital, analog, RTD, thermocouple) via the side expansion bus. Maximum total I/O: 256 digital or 64 analog points. Expansion modules are automatically recognized by the CPU.
Programming Software
Honeywell ControlEdge Builder (based on Codesys V3) provides IEC 61131-3 languages: LD, FBD, ST, SFC, IL. The software supports online monitoring, debugging, and simulation. The controller also features a built-in web server for remote diagnostics and data visualization.
Power and Environment
Supply voltage: 24V DC (20.4–28.8V). Power consumption: 12 W typical. Dimensions: 105 mm width x 135 mm height x 70 mm depth. Weight: 0.7 kg. Operating temperature: -20°C to +60°C; storage: -40°C to +85°C. Humidity: 5% to 95% non-condensing. Protection class: IP20. Certifications: CE, UL 508, ATEX Zone 2, RoHS.
Typical Applications
The 900H32-0102 is used in water/wastewater treatment, material handling, HVAC, and small process skids. Its wide temperature range makes it suitable for outdoor enclosures.
Ordering and Documentation
Part number: 900H32-0102 (ControlEdge 900). The unit includes terminal blocks and a DIN rail mounting clip. Manual: ControlEdge 900 Hardware Reference Guide (Honeywell doc. 900-001).
