8123-PI-QU

Product Overview

The MTL 8123-PI-QU is a 2-channel pulse/quadrature input module for industrial monitoring and control.

Input Channels

• Number of Channels: 2

• Frequency Range: 50 kHz (pulse), 12.5 kHz (quadrature)

• Accuracy (25°C): ±0.05% of span

• Temperature Stability: 0.005% / °C

• Control Gate (Channel 1): Switching thresholds 1.2 / 2.1 mA, Input impedance 1 kΩ, Supply 8.1 V @ 8 mA

Output Channels

• Type: Open-collector for external devices (LEDs, solenoids)

• Number of Channels: 2

• OFF Voltage: 30 V max

• OFF Leakage Current: 10 μA max

• ON Voltage Drop: <1.0 V @ 50 mA

• ON Current: 100 mA

• Retransmission Bandwidth: 1–2000 Hz

Isolation & Response

• Channel to Railbus: 100 V AC

• Between Inputs: None (common 0 V)

• Between Outputs: 30 V AC

• Response Time: 25 ms max to Railbus

Power & Consumption

• Railbus Current: 300 mA max (both channels @ 22 mA)

• Bussed Field Power: 20 mA @ 24 ±10% V DC

• Power Dissipation: 2.8 W max (both channels), 2.0 W no load

Physical Specifications

• Weight: 260 g

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