AO820 3BSE008546R1 ABB | Analog Output Module | 4-Channel

ABB AO820 Analog Output Module

The ABB AO820 provides versatile 4-channel bipolar analog output with individual channel isolation. This module supports both current and voltage outputs for flexible industrial applications.

Output Specifications

• 4 bipolar channels configurable per channel
• Current: -20...+20 mA, 0...20 mA, 4...20 mA
• Voltage: -10...+10 V, 0...10 V, 2...10 V
• 12-bit resolution including sign
• ≤ 1.5 ms update cycle time
• < 0.7 ms rise time

Performance & Accuracy

• Maximum 0.1% error (voltage)
• Typical 0.1% at 250 ohms, max 0.15% (current)
• ±15% under/over range capability
• Maximum 90 ppm/°C temperature drift
• Output load: ≤ 550 Ω (current), ≥ 5 kΩ (voltage)

Isolation & Safety

• Individual channel-to-channel isolation
• Isolation to circuit common
• OSP sets safe state on error detection
• Short-circuit proof current limiting
• 500V AC dielectric test voltage
• 50V rated insulation voltage

Advanced Diagnostics

• Output data readback and verification
• Continuous open-circuit diagnostics
• Process voltage supervision
• Four front LEDs: Fault, Run, Warning, OSP
• Module and channel error reporting
• Error signals readable via ModuleBus

Power & Electrical

• Typical 6 W power dissipation
• 100 mA from +5V Modulebus
• 260 mA from +24V Modulebus
• 600 meters maximum field cable length
• Separate terminals for voltage/current outputs

Environmental & Physical

• 0 to +55°C operating temperature
• IP20 protection rating
• S800 mechanics
• 45mm × 102mm × 119mm dimensions
• 0.18 kg weight
• Keying code BC

Compatibility

• MTU Models: TU810, TU812, TU814, TU830, TU833
• Article number: 3BSE008546R1
• Software-configurable output types
• User-responsible proper wiring

FAQ

• What output types are supported?
  Bipolar current (±20mA) and voltage (±10V) with multiple ranges.
• How many channels are available?
  Four independently configurable output channels.
• What isolation is provided?
  Individual galvanic isolation between all channels and common.
• What is the resolution?
  12-bit resolution including sign for bipolar signals.
• How are outputs configured?
  Software settings define output type; user wires appropriate terminals.

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