Product Overview

The SD16R3 is a digital input module from Flexem. It is designed for industrial automation systems. This module provides reliable signal acquisition. It connects field devices to a controller. The module supports 16 input channels. Each channel can accept 24 V DC signals. The SD16R3 uses a standard terminal base. This simplifies wiring and installation. The module is a new original unit. It is available in stock for immediate shipment.

The SD16R3 belongs to the Flexem I/O family. It offers high-density input capacity. This reduces the need for multiple modules. The module features LED indicators for each channel. This allows quick status checks. The SD16R3 is suitable for various industrial environments. It operates within a wide temperature range. The module ensures stable performance in harsh conditions. It is a cost-effective solution for digital input needs.

Application Scenarios

The SD16R3 is ideal for factory automation. It monitors sensor states on production lines. Use it for limit switch detection. It tracks conveyor belt positions. The module works in packaging machinery. It detects product presence and absence. Use it in material handling systems. It monitors bin levels and part presence. The SD16R3 fits into building automation. It monitors door contacts and alarm inputs. It is used in HVAC systems for filter status. The module also works in water treatment plants. It monitors pump run signals and valve positions.

Integrate the SD16R3 into a PLC system. It connects to Flexem controllers or other brands. The module is compatible with standard fieldbuses. Use it in distributed I/O configurations. It reduces wiring costs and simplifies troubleshooting. The SD16R3 is suitable for retrofit projects. It replaces older input modules easily. Its compact size saves cabinet space. The module is a reliable choice for continuous operation.

Technical Specifications

• Input channels: 16 digital inputs
• Input type: Sink or source (24 V DC)
• Input voltage range: 15 to 30 V DC
• Input current: 6 mA per channel typical
• Isolation: 1500 V AC between channels and system
• Response time: < 1 ms
• Power supply: 24 V DC via terminal base
• LED indicators: Per channel status
• Operating temperature: -20°C to +60°C
• Storage temperature: -40°C to +85°C
• Humidity: 5% to 95% non-condensing
• Dimensions: 120 mm x 80 mm x 30 mm
• Weight: 0.15 kg
• Certifications: CE, UL, RoHS

Installation & Maintenance Guide

Mount the module on a DIN rail. Use a standard 35 mm rail. Ensure adequate ventilation around the module. Connect the terminal base first. Attach the module to the base. Tighten screws to secure the connection. Wire field devices to the terminal base. Use twisted-pair cable for long distances. Keep cable length under 100 meters. Connect the 24 V DC power supply. Observe correct polarity.

Check LED indicators after power-up. A green LED shows active input. A red LED indicates a fault. Replace the module if faults persist. Clean the module with a dry cloth. Do not use solvents. Inspect connections every six months. Tighten loose terminals. Store spare modules in an anti-static bag. Keep firmware updated per manufacturer instructions. Use fuses on input lines for protection. Follow local electrical codes during installation.

Frequently Asked Questions (FAQ)

What is the primary function of the SD16R3?

The SD16R3 is a digital input module. It reads 24 V DC signals from sensors. It sends data to a controller for processing.

Is the SD16R3 compatible with other PLC brands?

Yes, the SD16R3 works with any PLC that supports standard digital inputs. It uses a 24 V DC interface. It can connect to Flexem, Siemens, or Allen-Bradley systems.

What is the maximum cable length for inputs?

The recommended maximum cable length is 100 meters. Use shielded twisted-pair cable for best noise immunity. Longer runs may cause signal degradation.

Can the SD16R3 be used in outdoor environments?

The module is rated for indoor use only. It operates between -20°C and +60°C. Do not expose to rain or direct sunlight.

How do I troubleshoot a non-responsive channel?

Check the LED indicator for that channel. If it is off, verify the sensor power supply. Check wiring for breaks or shorts. Replace the sensor if needed.