Huceen

E3 200Smart CPU Economy Edition，CPU SR20 Relay，12DI/8DO，1*RJ45，1*RS485，No extension support

General Overview

• Model: Standalone CPU SR20, Relay
• Article No.: E3 288-1SR20-0AA1
• Norm: Conventional

Physical Specifications

• Dimensions: 90 x 100 x 81 mm
• Power Consumption: 14W
• Available Current (SM Bus): Max. 1400mA
• Available Current (24V DC): Max. 300mA

Memory & Data

• Program Memory: 12 KB
• Data Memory: 8 KB
• Retentive Memory: 10 KB
• Data Preservation: Permanent

I/O Configuration

• Built-in I/O:
  • Digital Inputs: 12 channels
  • Digital Outputs: 8 channels (Relay, dry contact)
  • Analog Inputs/Outputs: Not specified
  • Process Image Size: 256-bit input, 256-bit output
  • Analog Image: 56 words input (AI), 56 words output (AQ)

Expansion & Counters

• Expansion Modules: Not supported
• High-Speed Counters:
  • 4 total
  • 50 kHz (HSC0-3) for single-phase
  • 30 kHz (HSC0) for quadrature-phase
• Pulse Output: Not supported
• Timers:
  • Non-holding (TON, TOF): 192
  • Holding (retained): 64
• Counters: 256
• Bit Memory (M): 256 bits
• Cycle Interrupt: 2 total (T32 and T96 with 1ms resolution)
• Interrupt Edges: 4 up, 4 down
• Real-Time Clock: Not supported
• Memory Card: Supported

Performance & Processing Time

• Boolean Processing: 0.35 µs/instruction
• Moving Word Operations: 1.2 µs/instruction
• Floating Point: 1.7 µs/instruction

Communications

• Ports:
  • Ethernet: 1 (10/100 Mbps)
  • Serial Port: 1 (RS485)
• HMI Connections:
  • Ethernet: 5 connections
  • Serial Port: 4 connections
• Programming (PG) Connection: 1
• Ethernet Communication:
  • CPU (PUT/GET): Share 5 connections
  • Open Type Communication: Share 5 connections
• Data Transmission Rates:
  • Ethernet: 10/100 Mb/s
  • RS485 System Protocol: 9600, 19200, and 187500 b/s
  • RS485 Free Port: 1200 to 115200 b/s
• Isolation:
  • Ethernet: Transformer isolation (1500V DC)
  • RS485: None
• Cable Type:
  • Ethernet: CAT5e Shielded Cable
  • RS485: PROFIBUS Network Cable

Power Supply

• Input Voltage: 85-264V DC
• Input Current (CPU only):
  • 130mA (without 300mA power supply output for the sensor) at 120V AC
  • 250mA (with 300mA power supply output for the sensor) at 120V AC
  • 80mA (without 300mA power supply output for the sensor) at 240V AC
  • 150mA (with 300mA power supply output for the sensor) at 240V AC
• Input Current (CPU + Expansion Accessories):
  • 300mA at 120V AC
  • 190mA at 240V AC
• Inrush Current (Max): 9.3A at 264V DC
• Sensor Voltage: 20.4-28.8V DC
• Isolation:
  • Input to Logic: 1500V AC, 1 min
  • Sensor to Logic: Not isolated

Digital Inputs

• Number of Inputs: 12
• Input Type: Sinking/Sourcing (IEC type 1 sinking)
• Max Continuous Voltage: 30V DC
• Surge Voltage (Max): 35V DC (lasting 0.5s)
• Logic 1 Signal (Min): 15V DC at 2.5mA
• Logic 0 Signal (Max): 5V DC at 1mA
• Optical Isolation: 500V AC for 1 minute
• Isolation Group: 1
• Filter Time: Selectable per channel (0, 6.4ms, 12.8ms)

Digital Outputs

• Number of Outputs: 8
• Output Type: Relay, dry contact
• Voltage Range: 5-30V DC or 5-250V AC
• Surge Current (Max): 7A during power-on
• Rated Current per Point (Max): 2.0A
• Switching Frequency: Not recommended
• Turn-On Delay: Up to 10ms
• Turn-Off Delay: Up to 10ms
• Optical Isolation: 500V AC for 1 minute
• Contact Lifetime:
  • Non-loaded: 10,000,000 cycles
  • Rated Load: 10,000 cycles