CPU SR40 AC/DC/RLY

HUCEEN CPU SR40 AC/DC/RLY

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Description

E7 200Smart CPU Standard Edition，CPU SR40 Relay，24DI/16DO,1*RJ45，2*RS485, Expandable to 6IO

Overview

  • Model Number: E7 288-1SR40-0AA1
  • Description: Standard CPU SR40, Relay type
  • Dimensions: 125 × 100 × 81 mm
  • Power Consumption: 23W
  • Available Current:
    • SM Bus: Max. 1400mA
    • 24V DC: Max. 300mA

Memory

  • Program Memory: 24 KB
  • Data Memory: 16 KB
  • Retentive Memory: 10 KB (permanent data preservation)

I/O Capabilities

  • Digital Inputs: 24 (sinking/sourcing type, IEC Type 1 sinking)
  • Digital Outputs: 16 (Relay, dry contact)
  • Analog Inputs/Outputs:
    • Process Image: 256-bit input (I), 256-bit output (Q)
    • Analog Image: 56 words input (AI), 56 words output (AQ)
  • High-Speed Counters: 6 total
    • Single-phase: 4 at 200kHz, 2 at 30kHz
    • Quadrature phase: 2 at 100kHz, 2 at 20kHz
  • Pulse Output: None
  • Timers:
    • Non-holding: 192
    • Holding: 64
  • Counters: 256
  • Bit Memory: 256 bits
  • Cycle Interrupts: 2, with 1ms resolution (T32, T96)
  • Interrupt Edges: 4 rising, 4 falling

Communications

  • Ethernet:
    • 1 port, supporting 10/100 Mbps
    • 8 active clients, 8 active servers (PUT/GET protocol)
    • 8 active, 8 passive connections (open-type communication)
  • Serial Ports:
    • 2 x DB9-RS485
    • 1 x CM01-RS485-RS232
  • Transmission Rates:
    • Ethernet: 10/100 Mbps
    • RS485: 9600, 19200, 187500 bps, 1200-115200 bps
  • Isolation:
    • Ethernet: Transformer isolation (1500VDC)
    • RS485: None

Power Supply

  • Input Voltage: 85-264V DC
  • Input Current:
    • CPU only (120V AC): 130mA (without 300mA sensor power supply) / 250mA (with 300mA sensor power supply)
    • CPU only (240V AC): 80mA (without 300mA sensor power supply) / 150mA (with 300mA sensor power supply)
    • Includes CPU + expansions:
      • 130mA at 120V AC
      • 190mA at 240V AC
  • Inrush Current (Max): 16.3A at 264V DC
  • Sensor Voltage: 20.4V to 28.8V DC
  • Isolation:
    • Input to Logic: 1500V AC for 1 minute
    • Sensor to Logic: Not isolated

Digital Input

  • Number of Inputs: 24
  • Input Type: Sinking/Sourcing (IEC Type 1 sinking)
  • Allowable Continuous Voltage: Max. 30VDC
  • Surge Voltage (Max): 35V DC (0.5s duration)
  • Logic 1 Signal: 15V DC at 2.5mA minimum
  • Logic 0 Signal: 5V DC at 1mA maximum
  • Optical Isolation: 500V AC for 1 minute

Digital Output

  • Number of Outputs: 16
  • Output Type: Relay (dry contact)
  • Voltage Range: 5-30V DC or 5-250V AC
  • Surge Current (Max): 7A (when power is first applied)
  • Rated Current per Output Point: 2.0A
  • Switching Frequency: Not recommended
  • Turn-on/Turn-off Delay:
    • Qa.0 to Qa.3: Up to 10ms
    • Qa.4 to Qb.7: Up to 10ms
  • Optical Isolation: 500V AC for 1 minute
  • Contact Lifetime:
    • Non-loaded: 10,000,000 cycles
    • Rated Load: 10,000 cycles

Miscellaneous

  • Real-Time Clock: Typically 7 days, at least 6 days at 25°C
  • Memory Card Support: Yes
  • Signal Expansion Board Support: Yes

Summary

The CPU SR40 AC/DC/RLY is an industrial PLC with relay-based digital outputs. It is ideal for control systems that need both AC/DC input power options and relay outputs, supporting a variety of industrial applications. It features a relatively high memory capacity (24 KB program memory, 16 KB data memory), and supports flexible I/O configurations with up to 6 expansion modules. The built-in communications (Ethernet, RS485) and high-speed counters make it suitable for applications requiring real-time processing and network connectivity.

This model is well-suited for environments that require relay-based outputs for controlling machinery or other devices, and its flexibility in power input (AC/DC) makes it adaptable to different system configurations.

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