Technical Parameters (EC20-4040BRA) Model: EC20-4040BRA Series: EC20 Modular PLC Product Type: Programmable Logic Controller (CPU + Integrated I/O) Power Supply: Likely 24V DC or 100-240V AC (depending on configuration) Program Memory: Typically 64K steps to 128K steps Data Memory: Large data memory for complex applications (typically 64K words) Processing Speed: Fast scan time (<0.2μs per basic instruction) Digital Inputs: 40 points Input Type: Sink/Source (typically 24V DC) Isolation: Opto-isolated Response Time: Programmable filter settings (0-20ms) Input Impedance: Approximately 4.7kΩ Groups: Typically isolated in groups of 8 or 16 Digital Outputs: 40 points - Relay type (indicated by "BRA") Output Type: Relay (mechanical) Contact Rating: Typically 2A per point at 240V AC / 30V DC Maximum Switching Voltage: 250V AC / 30V DC Minimum Load: 10mA at 5V DC Mechanical Life: 20 million operations Electrical Life: 100,000 operations at rated load Isolation: 1500V AC between coil and contacts Common Groups: Typically grouped in commons of 4 or 8 High-Speed Counters: Up to 8 channels (100kHz-200kHz) Modes: Up/down, quadrature, pulse/direction Pulse Outputs: Up to 4 axes (for stepper/servo control) at up to 200kHz Modes: Pulse/direction, CW/CCW, AB phase Communication Ports: 1 x Programming port (RS232) - for connection to PC/programming software 1 x Communication port (RS485) - for MODBUS RTU networking (master/slave) 1 x Ethernet port (standard for EC20 series) - for MODBUS TCP, programming, HMI connection USB port for programming (optional on some variants) Expansion port for local I/O modules Real-Time Clock: Built-in with battery backup (typically lithium battery, 5+ years life) Programming Software: Emerson/EC series programming software (supports ladder logic, ST, FBD, SFC, IL) Protocols Supported: MODBUS RTU (master/slave), MODBUS TCP, CANopen (optional), DeviceNet (optional), Profibus DP (optional), Ethernet/IP (optional) Networking: Can act as MODBUS master or slave, supports peer-to-peer communication Expansion Capability: Supports up to 32 local expansion modules and remote I/O via fieldbus Maximum I/O: Up to 1024 points or more with expansion (digital + analog) Analog I/O Support: Via expansion modules (0-10V, 4-20mA, 0-20mA, ±10V) Temperature Modules: Support for thermocouple (J, K, T, etc.) and RTD (PT100, PT1000) inputs Specialty Modules: PID control, motion control, communication modules Removable Terminals: Pluggable terminal blocks for easy wiring and replacement Protection Class: IP20 (requires enclosure for installation) Operating Temperature: 0°C to +55°C Storage Temperature: -20°C to +70°C Humidity: 5% to 95% RH (non-condensing) Altitude: Up to 2000m operating Vibration Resistance: Compliant with IEC 61131-2 standards (5-9Hz, 3.5mm; 9-150Hz, 1.0g) Shock Resistance: 15g peak, 11ms duration Dimensions (H x W x D): Approx. 130 mm x 250 mm x 100 mm (5.1" x 9.8" x 3.9") - typical for higher I/O count Weight: Approx. 1.5 kg (3.3 lbs) Standards: CE, UL, cUL, RoHS, IEC 61131-2