Product Summary
The Flexem FR-D0808N delivers a compact digital mixed I/O solution for demanding automation tasks. This module integrates eight bidirectional input channels with eight NPN output channels. Engineers gain reliable signal control within a slim 18mm housing. It operates on a standard 24VDC power supply. The module supports both NPN and PNP sensor types for input flexibility. Its robust design ensures stable performance in industrial environments. This unit weighs only 65 grams for easy installation.
Theme Option A: Product Procurement & Buyer Guide
Selecting the Right Output Logic for Your System
Procurement managers must verify output logic before purchasing. The FR-D0808N specifically provides NPN sinking outputs. This design suits systems with a common positive voltage rail. You should choose this model for traditional sinking load applications. It controls devices like relays and solenoid valves effectively. The module handles a rated current of 0.5A per output point. Each group of outputs shares this current limit safely. This specification ensures reliable switching for your actuators.
Understanding Input Flexibility for Sensor Integration
The input stage accepts both NPN and PNP proximity sensors. This bidirectional capability simplifies your sensor procurement process. You can connect various sensor types without additional converters. The rated input voltage is precisely 24VDC with a 7mA current. Its wide input range spans from 0 to 28.8V DC. This tolerance protects against minor voltage fluctuations in your plant. Engineers appreciate this flexibility for mixed sensor environments.

Evaluating Physical Dimensions for Cabinet Layout
Space within control cabinets is always a critical constraint. This module measures just 111mm in height and 18mm in width. Its depth is only 76mm, allowing for dense panel layouts. The lightweight construction at 65g reduces stress on DIN rails. You can mount multiple units side by side efficiently. This compact footprint maximizes your available cabinet real estate. Plan your layout to optimize airflow and wiring access.
Matching Power Supply Requirements for Stability
Your system power supply must meet specific voltage and current demands. The module requires a rated voltage of 24VDC for operation. Its input circuit draws 7mA per active channel consistently. The output stage requires a separate 24VDC supply from 19.2 to 28.8V. Each output group can sink up to 0.5A of continuous current. Ensure your power supply can handle the total load. This careful matching prevents brownouts and erratic behavior.
Solving Common Industrial Pain Points with This Module
Engineers often face challenges with mixed signal types in one system. This module solves that by combining inputs and outputs in one unit. It reduces the total number of modules you need to stock. The bidirectional inputs eliminate the need for separate NPN and PNP cards. This consolidation simplifies your bill of materials significantly. Maintenance teams appreciate having fewer spare parts to manage. The result is a more streamlined and cost-effective control system.

Theme Option B: Step-by-Step User & Installation Guide
Mechanical Mounting on a DIN Rail
Begin by securing the module onto a standard 35mm DIN rail. Align the top hook of the module with the rail’s top edge. Press the bottom of the module firmly until it clicks into place. Ensure the module sits flush against the rail without gaps. Use a screwdriver to remove the module if needed. This mechanical lock provides a stable and vibration-resistant mount. Always verify the rail is grounded properly first.
Wiring the Bidirectional Input Channels
Each of the eight input terminals accepts a 24VDC signal. Connect your sensor’s signal wire to the appropriate input terminal. The module automatically detects whether the sensor is NPN or PNP. You do not need to set any jumpers for this configuration. Use a wire stripper to prepare 24-16 AWG solid or stranded wire. Tighten the screw terminal to the manufacturer’s recommended torque. This ensures a solid electrical connection without damage.
Connecting the NPN Output Loads
The eight output channels sink current to ground when activated. Connect the positive side of your load to the 24VDC supply. Wire the negative side of the load to the output terminal. The module’s internal switch completes the circuit to ground. Each output can handle a maximum of 0.5A continuously. Remember that the total current per group must not exceed 0.5A. Verify your load current does not exceed this limit.

Powering the Module Correctly
Apply 24VDC to the module’s power input terminals. The input power range is 19.2 to 28.8V DC for reliable operation. Use a dedicated power supply for the output stage if needed. Connect the common ground between the supply and the module. Double-check the polarity before applying power to the system. A reverse polarity connection can damage the internal circuits. Use a multimeter to confirm voltage at the terminals first.
Verifying Initial Operation and Signal Status
After wiring, power up the system and observe the module’s status. Activate each input sensor and watch for the corresponding LED. The LED illuminates when the input signal is present and valid. Then, command each output to turn on from your PLC. The output LED confirms the channel is actively sinking current. This visual check validates your wiring and module configuration. Document any anomalies for immediate troubleshooting.
Logistics & Standard Packaging Details
- One Flexem FR-D0808N digital mixed I/O module
- Product documentation and quick start guide
- Removable screw terminal connectors for wiring
- Express shipping is available via FedEx, UPS, and DHL
