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ABB FEN-31 rotary encoder interface module
Item NO.:
FEN-31Payment:
T/TPrice:
$1300Product Origin:
SwedenColor:
NEWProduct weight:
0.5KGLead Time:
in stockWe will arrange delivery within 3-5 days after receiving the payment.
Our express delivery: DHL and FedEx.
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Destination country all taxes & duty to be paid by buyer
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The ABB FEN-31 Rotary Encoder Interface Module is designed to connect HTL incremental encoders to ABB drives and servo systems. It converts encoder feedback signals into TTL/RS-422 compatible outputs for speed and position control.
The module supports differential, push-pull, and open-collector encoder types. With high-speed response, digital latch inputs, and cable fault detection, the FEN-31 provides accurate and reliable signal feedback for closed-loop motor control applications.
| Item | Description |
|---|---|
| Model | FEN-31 Rotary Encoder Interface Module |
| Supported Encoder Type | HTL incremental encoders (differential, push-pull, open-collector, open-emitter) |
| Max Input Frequency | 300 kHz |
| Output Signal | TTL or RS-422 compatible |
| Digital Inputs | 2 latch inputs for position or event capture |
| Encoder Supply Voltage | Selectable 15 V DC or 24 V DC (via jumper) |
| Module Supply Voltage | 24 V DC (±10%) |
| Max Current Consumption | Approx. 350 mA |
| Power Consumption | Approx. 5 W (including encoder load) |
| Signal Interface | Plug-in terminal + 20-pin connector |
| Protection Class | IP20 (internal module) |
| Operating Temperature | 0 °C ~ +55 °C |
| Storage Temperature | –25 °C ~ +70 °C |
| Relative Humidity | Max. 95%, non-condensing |
| Isolation | Electrically isolated signal and control circuits |
| Dimensions | Approx. 120 mm × 80 mm × 25 mm |
| Mounting | Plug-in type, installed inside drive option slot |
| Indicators | LED lights for module and encoder status |
Wide compatibility with different HTL encoder types.
High-speed response, supporting up to 300 kHz input.
TTL/RS-422 output ensures reliable communication with drive systems.
Dual latch inputs for precise event or position detection.
Fault detection for encoder wiring and signal lines.
Modular plug-in design, easy installation and replacement.
Strong EMC performance, stable operation in harsh industrial environments.
ABB ACS / ACSM / ACS880 drive systems
Servo and motion control systems
Industrial automation and robotics
High-speed machinery (packaging, printing, textile, metal processing)
Closed-loop speed and torque control systems
Applications requiring precise position and synchronization feedback
Always power off the system before installing or removing the module.
Set jumpers properly for 15 V or 24 V encoder supply before powering on.
Use shielded twisted-pair cables, ground the shield at one end only.
Keep encoder cable within recommended length to avoid signal distortion.
Check LED indicators for power, signal, and fault status.
Configure drive parameters to match the encoder type and resolution.
Install the module in a clean, dry, vibration-free control cabinet.
The structure and details of the product：
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