AO845A

Overview

• Model: AO845A
• Brand: ABB
• Type: Analog Output
• Signal Specification: 4..20 mA
• Number of Channels: 8
• HART: Yes
• Redundancy: Yes
• Intrinsic Safety: No
• Mechanics: S800

Technical Specifications

• Resolution: 12 bit
• Isolation: Groupwise isolated from ground
• Under/Over Range: -12.5% / +15%
• Output Load: Max 750 Ω
• Error: Max. 0.1%
• Temperature Drift: Max. 50 ppm/°C
• Rise Time: Output filter: Disable 23 ms, Enable max 4 mA / 12.5 ms
• Input Filter (Rise Time 0-90%): 23 ms (0-90%), max 4 mA / 12.5 ms
• Update Cycle Time: 10 ms
• Current Limiting: Short circuit proof, current limited output

Power & Insulation

• Maximum Field Cable Length: 600 meters (656 yards)
• Rated Insulation Voltage: 50 V
• Dielectric Test Voltage: 500 V AC
• Power Dissipation: Typ. 3.5 W
• Current Consumption +5 V Modulebus: Max. 125 mA
• Current Consumption +24 V External: 218 mA

Compatibility

• Use with MTU: TU810, TU812, TU814, TU830, TU833, TU842, TU843, TU852
• Keying Code: DB

Dimensions

• Width: 45 mm (1.77”)
• Depth: 102 mm (4.01”), 111 mm (4.37”) including connector
• Height: 119 mm (4.7”)
• Weight: 0.21 kg (0.46 lbs.)

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