ABB AO820 3BSE008546R1 Analog Output Module

AO820 Galvanically Isolated Bipolar Analog Output Module

Description

The AO820 Analog Output Module has 4 bipolar analog output channels. The choice of current or voltage output is configurable for each channel. There are separate sets of terminals for voltage and current outputs, and it is up to the user to wire outputs properly. The only differences between current or voltage channel configuration are in software settings.

To supervise the communication to the A/D converters, the output data is read back and verified. The open-circuit diagnostics are read continuously as well. The process voltage supervision input gives channel error signals if the voltage disappears. The error signal can be read via the ModuleBus. The channel diagnostics include fault detection of the channel (only reported on active channels). The error is reported if the output current differs from the output set value (i.e., open wire condition).

Features

• 4 channels of -20 mA...+20 mA, 0...20 mA, 4...20 mA or -10 V...+10 V, 0...10 V, 2...10 V outputs.
• Individually galvanically isolated channels.
• OSP sets outputs to predetermined state upon error detection.

Appendix A Specifications

AO820 Galvanically Isolated Bipolar Analog Output Module
3BSE020924-510 B 197

Four Different Types of MTUs

• The TU830 Extended MTU and the TU810 (or TU814) Compact MTU enable wire connection to the devices without additional terminals.
• The TU812 Compact MTU has a D-Sub 25 pin (male) connector for connection to the process.

Technical Data

AO820 Analog Output Module Specifications at 25°C

Feature: AO820 Analog Output Module
Number of Channels: 4
Output Ranges (Nominal): -20 mA...+20 mA, 0...20 mA, 4...20 mA (1) or -10 V...+10 V, 0...10 V, 2...10 V (1)
Over Range: ± 15%
Output Load: ≤550 ohms - Nominal ranges; ≤510 ohms - Over-range
Output Load, Voltage Outputs: ≥ 5k ohms
Maximum Field Cable Length: 600 meters (656 yd.)
Rise Time: < 0.7 ms
Cycle Time for All Channels: ≤1.5 ms
Error, Voltage: Max. 0.1%
Error, Current at 250 ohms: Typ. 0.1%, Max. 0.15%
Resolution: 12 bits plus sign
Output Set as Predetermined (OSP) Timer: 256, 512, 1024 ms
Temperature Drift: Max. 90 ppm/°C
Current Consumption 24 V (Modulebus): 260 mA (max)
Current Consumption 5 V (Modulebus): 100 mA (max)
Power Dissipation (2): 6 W
Supervision: Module: Output power low; Channel: Open circuit (for current > 1mA)
Isolation: Individually isolated, channel-to-channel and to circuit common
Module Termination Units: TU810, TU812, TU814 or TU830
MTU Keying Code: BC
Rated Insulation Voltage: 50 V
Dielectric Test Voltage: 500 V a.c.