TU842

Overview

TU842 is a redundant horizontal MTU supporting up to 16 I/O channels with dual power and ModuleBus connections.

Electrical Specifications

• Rated voltage (insulation): 50 V

• Dielectric test voltage: 500 V AC

• Max continuous current per I/O channel: 3 A

• Max continuous current per process voltage (L+): 10 A

• ModuleBus 5 V current distribution: 1.5 A

• ModuleBus 24 V current distribution: 1.5 A

Connectivity

• Process connections: 56 terminals

• Supported I/O channels: Up to 16 (2 terminals per channel)

• Process power terminals: 4 (L+), 20 (0 V)

Wiring and Installation

• Solid wire size: 0.2 – 4 mm²

• Stranded wire size: 0.2 – 2.5 mm² (24 – 12 AWG)

• Recommended torque: 0.5 – 0.6 Nm

• Stripping length: 7 mm

Mechanical Design

• Width: 131 mm (with connector) / 124 mm (installed)

• Depth: 64 mm (including terminals)

• Height: 186.5 mm (including locking device)

• Weight: 0.6 kg

• Mechanical keying: 2+2 keys, 36 combinations

• I/O module lock: Included

Standards and Protection

• Equipment class: Class I (IEC 61140, earth protected)

• Protection rating: IP20 (IEC 60529)

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