Product Introduction
The Flexem F5-MD1616N is a high-density industrial automation module engineered for demanding control applications. It combines 16 bipolar input channels with 16 transistor output channels in a single compact unit, making it an efficient solution for modern PLC and DCS systems. Whether you are upgrading an existing line or designing a new control panel, the F5-MD1616N delivers reliable performance and precise signal handling.
Built for 24 VDC operation, the F5-MD1616N accepts a wide input range of 0 to 28.8 V DC, accommodating various sensor signals. Its source/sinking input type offers flexibility in wiring, while the integrated short-circuit protection on outputs ensures long-term durability. This module is an ideal choice for OEMs, system integrators, and maintenance teams seeking a cost-effective, space-saving I/O solution.
Key Specifications at a Glance
The F5-MD1616N provides a balanced mix of input and output capabilities. Below are the core parameters that define its performance:
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Input Points: 16 bipolar
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Rated Input Voltage: 24 VDC (range 0–28.8 V DC)
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Rated Input Current: 7 mA
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Output Points: 16 transistor (source type)
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Output Rated Voltage: 24 VDC (range 19.2–28.8 VDC)
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Output Rated Current: 0.5 A per point
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Short-Circuit Protection: Available with self-recovery
Technical Specifications Breakdown
Understanding the technical details helps you integrate the F5-MD1616N correctly. Here we examine the most critical specifications:
Input Characteristics
The input stage of the F5-MD1616N is designed for reliable signal acquisition. It supports a voltage peak of 30 V and a current of 9 mA, ensuring it can handle transient spikes without damage. The state detection thresholds are clearly defined: a voltage above 15 V (up to 28.8 V) registers as logic 1, while a voltage below 5 V registers as logic 0. This makes the module compatible with a wide range of 2-wire and 3-wire sensors.
Input impedance is 3.3 kΩ, and the filter time defaults to 1 ms, with 16 equally divided levels selectable from unfiltered to 100 ms. This adjustability lets you fine-tune the module for noisy environments or high-speed applications. The input isolation uses an optocoupler, providing electrical separation between field wiring and the controller logic.
Output Characteristics
On the output side, the F5-MD1616N drives inductive or resistive loads with a rated current of 0.5 A per point. The maximum voltage drop is only 1 VDC, ensuring efficient power delivery. Leakage current when turned off is less than 5 μA, preventing unintended activation. The module offers a start time of 34 μs and a turn-off time of 250 μs, making it suitable for moderate-speed switching applications up to 1 kHz.
Short-circuit protection is a standout feature. When a short occurs, the output current is limited to 1.3 A, and the module self-recovers every 10 ms after the fault is cleared. This protects both the module and the connected equipment from damage. The clamping voltage is 39 VDC (±1 V), and isolation between output and internal logic is rated at 500 V AC, ensuring safe operation.
Industry Applications and Use Cases
The F5-MD1616N finds application across various sectors due to its dual input/output nature. Here are three typical scenarios:
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Machine Automation: In packaging or assembly machines, the F5-MD1616N can read sensor inputs (e.g., proximity switches) and drive actuator outputs (e.g., solenoid valves) directly, reducing the need for separate I/O modules.
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Process Control: In chemical or food processing plants, the module’s reliable input filtering and robust output protection make it suitable for monitoring level switches and controlling small pumps or alarms.
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HVAC Systems: For building automation, the F5-MD1616N can interface with temperature sensors and control fan contactors, offering a compact solution for distributed control panels.
Because the module supports both source and sinking inputs, it can connect to a variety of sensor types, simplifying inventory and design.
Installation and Setup Guidance
Proper installation ensures optimal performance. Follow these guidelines when mounting and wiring the F5-MD1616N:
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Mounting: Install the module on a DIN rail or flat surface in a well-ventilated enclosure. Ensure adequate clearance for heat dissipation.
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Wiring Inputs: For shielded cables, keep the length to a maximum of 100 m; for unshielded cables, limit to 50 m to avoid noise pickup. Use twisted-pair wiring for better immunity.
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Wiring Outputs: Output cables should be unshielded and kept to a maximum length of 50 m. Connect loads with appropriate fusing or circuit breakers to protect against overcurrent.
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Power Supply: Use a regulated 24 VDC supply. The input range is 0–28.8 V DC, but the rated voltage is 24 VDC. For outputs, the voltage range is 19.2–28.8 VDC.
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Configuration: Set the input filter time according to your application’s noise level. Start with the default 1 ms and adjust if necessary.
Maintenance and Reliability
The F5-MD1616N is designed for low-maintenance operation. However, regular checks can extend its service life and prevent unexpected downtime:
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Periodic Inspection: Every 6 months, inspect the module for dust accumulation, loose connections, or signs of overheating.
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Environmental Conditions: Avoid exposing the module to moisture, corrosive gases, or extreme temperatures. The module does not include any derating, so it can operate at full capacity under normal conditions.
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Overvoltage Protection: The input protection limits overvoltage to 30 V for a maximum of 1 hour per day. Ensure that your power supply does not exceed this limit to avoid damage.
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Output Loads: Verify that output currents do not exceed 0.5 A per point. The short-circuit protection will handle faults, but repeated overloads can stress the components.
By following these simple steps, you can maximize the reliability of the F5-MD1616N and reduce total cost of ownership.
Compatibility and Integration
The F5-MD1616N is a standalone I/O module that can be integrated into various control systems. It is compatible with PLCs and DCS that accept 24 VDC discrete I/O signals. The source/sinking input configuration allows it to interface with both PNP and NPN sensors, making it versatile in mixed-technology environments.
For communication, the module does not include a built-in network interface, so it typically connects to a PLC via a backplane or remote I/O adapter (if supported by the manufacturer). Check your PLC’s manual for compatibility with Flexem I/O modules. The F5-MD1616N can be used as a local or remote I/O expansion, depending on your existing architecture.
Selection Guide and Purchasing Advice
Before purchasing the F5-MD1616N, consider the following points to ensure it meets your system requirements:
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Verify Power Requirements: Confirm that your control cabinet provides a stable 24 VDC supply within the specified ranges.
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Check Sensor Compatibility: Ensure your sensors operate within the input thresholds (logic 1 above 15 V, logic 0 below 5 V).
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Assess Output Loads: Calculate the total current draw of connected devices to ensure they do not exceed 0.5 A per point or the group current limits.
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Consider Cable Lengths: Plan your wiring layout to stay within the recommended cable lengths (100 m shielded, 50 m unshielded).
For reliable sourcing and competitive pricing, PLC Source PRO offers the genuine Flexem F5-MD1616N with fast shipping and dedicated support. Contact our team for bulk pricing or technical assistance.