MTL 8123-PL-QU 2-Channel Input Module

Description

The MTL 8123-PL-QU is a high-performance 2-channel input module designed to capture pulse and quadrature signals from industrial sensors such as flow meters, proximity detectors, and rotary encoders. It enables precise monitoring and control in automation systems, including hazardous areas.

Specifications

• Model: MTL 8123-PL-QU

• Input Channels: 2 pulse inputs or 1 quadrature input

• Frequency Range: 1 Hz to 50 kHz (12.5 kHz in quadrature mode)

• Accuracy: ±0.05% of span at 25°C

• Temperature Stability: 0.005% per °C

• Supported Sensor Types: NAMUR, current pulse, voltage pulse, switch

• Input Voltage Range: 0–24 VDC (maximum 50 VDC)

• Input Current Range: Up to 20 mA

• Input Impedance: Voltage >10 kΩ, Current 25 Ω, NAMUR 1 kΩ

• Switching Thresholds: NAMUR 1.2 mA / 2.1 mA

• Pulse Counting: Count up/down with optional gate control

• Quadrature Mode: Direction detection enable/disable

• Filtering Options: Off, 1, 5, 20, 100 kHz

• Sample Period: Configurable from 20 ms to 200 s

• Alarms: Frequency and acceleration alarms with user-defined limits

• Output Channels: 2 open-collector outputs (max 30 V, 100 mA)

• Retransmission Bandwidth: 1–2000 Hz

• NAMUR Sensor Power Supply: 8.1 VDC nominal @ 8 mA

• Hazardous Area Rating: Zone 0 / Div 1 and Zone 2 / Div 2

• Operating Temperature: –20°C to +60°C

• Mounting: DIN rail

• Dimensions: 99 mm × 22.5 mm × 114.5 mm

• Weight: 0.5 kg

Features

• Dual-Mode Input: Supports both pulse and quadrature signal acquisition

• High-Speed Monitoring: Captures signals up to 50 kHz for pulse mode

• Quadrature Decoding: Enables direction-sensitive encoder tracking

• Flexible Sensor Support: Compatible with NAMUR, voltage, current, and switch-type sensors

• Advanced Filtering: Adjustable input filtering for noise reduction

• Alarm Functions: Configurable frequency and acceleration alarms for diagnostics

• Retransmission Outputs: Two open-collector outputs for external devices

• Hazardous Area Compliance: Certified for use in Zone 0 / Div 1 environments

• Compact Design: Slim profile for efficient DIN rail installation

• Modular Integration: Seamlessly fits into PAC8000 I/O systems