F5-MD0404P Mixed I/O Module – 4 Inputs 4 Outputs 24VDC

• General Specifications

  • Brand: Flexem
  • Series: FC5 Digital I/O Module
  • Models: F5-MD0404P
  • Input Points: 4 digital inputs (bipolar)
  • Output Points: 4 transistor outputs
  • Supply Voltage: 24VDC for internal logic and outputs

• Input Characteristics (Both Models)

  • Input Type: Bipolar – accepts both source (PNP) and sink (NPN) sensors
  • Rated Voltage: 24VDC (input range 0~28.8VDC)
  • Rated Current: 7mA typical at 24VDC
  • Maximum Peak Voltage: 30V (limited to 1 hour per day)
  • ON State Voltage: >15V (15~28.8V range)
  • OFF State Voltage: <5V (0~5V range)
  • ON State Current: >2.5mA
  • OFF State Current: <1.0mA
  • Input Impedance: 3.3kΩ
  • Isolation: Optocoupler isolation per channel
  • Compatibility: Works with 2-wire and 3-wire sensors
  • Cable Length: 100m max with shielded cable, 50m unshielded

• Output Characteristics (Transistor)

  • Output Points: 4 transistor outputs
  • Output Type: F5-MD0404N = NPN (sinking), F5-MD0404P = PNP (sourcing)
  • Rated Voltage: 24VDC (operating range 19.2~28.8VDC)
  • Rated Current: 0.5A per point
  • Current per Group: 0.5A per common group
  • Voltage Drop: 1VDC maximum when output is ON
  • Leakage Current: <5μA when output is OFF
  • Incandescent Lamp Load: 2.4W maximum per output
  • Derating: None – full current across temperature range

• Output Switching Performance

  • Start Time: 34μs maximum for fast response
  • Turn-off Time: 250μs maximum
  • Maximum Output Frequency: 1kHz for repetitive switching
  • Suitable for solenoid valves, indicators, and small relays

• Protection & Isolation Features

  • Short Circuit Protection: Available with automatic recovery
  • Peak Short-circuit Current: 1.3A during fault condition
  • Self-recovery: Checks every 10ms after short circuit or overload
  • Clamping Voltage: 39VDC maximum, ±1V for inductive load suppression
  • Input Overvoltage Protection: 30V maximum (1 hour/day limit)
  • Output Isolation: 500V AC between outputs and internal logic
  • Input Isolation: Optocoupler provides channel isolation

• Frequently Asked Questions

  • What is the difference between F5-MD0404P?
    The F5-MD0404N provides NPN (sinking) transistor outputs, while the F5-MD0404P provides PNP (sourcing) outputs. Choose based on your load common wiring requirements.
  • Can I use both NPN and PNP sensors with these modules?
    Yes, the inputs are bipolar and accept both sensor types regardless of which output model you choose. The F5-MD0404N and F5-MD0404P share identical input circuits.
  • What happens during an output short circuit?
    The module limits current to 1.3A peak and automatically attempts recovery every 10ms. This protects both the module and your wiring.
  • What is the maximum inductive load I can switch?
    The integrated clamping circuit handles inductive kickback up to 39VDC. For larger inductances, add external flyback diodes.
  • Do these modules work with the Flexem FC5 CPU?
    Yes, they connect directly to any Flexem FC5 CPU via the expansion bus. The system automatically detects the module type.
  • Can I mix NPN and PNP outputs in the same system?
    Yes, you can use both F5-MD0404N and F5-MD0404P modules together in the same PLC rack for different output requirements.

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