AO820是一个产品，具体为4通道模拟输出模块，设计用于 Advant OCS和ABB MOD 300系统。
关于AO820的技术规范，其电源电压为24V DC标称（限值19.2~30V DC），功耗为3.5W（也有资料指出功耗为4W）。
AO820温度范围为-40°C至+70°C（-40至158°F）。通道数量为4，通道电流为20mA。输出电压范围可以是0~10V DC或-10至+10V DC。
AO820该模块的分辨率为16位，精度为满量程的±0.1%（也有资料指出精度为满量程的±0.05%）。
AO820模块支持多种通信协议，如现场总线DP、哈特、Foundation现场总线和Modbus远程终端设备。
The AO820 is a product, specifically a 4-channel analog output module, designed for use with Advant OCS and ABB MOD 300 systems.
As for the technical specification of AO820, its power supply voltage is 24V DC nominal (limit 19.2~30V DC), and its power consumption is 3.5W (there are also data indicating that the power consumption is 4W).
The AO820 has a temperature range of -40°C to +70°C (-40 to 158°F). The number of channels is 4 and the channel current is 20mA. The output voltage range can be 0 to 10V DC or -10 to +10V DC.
The AO820 module has a resolution of 16 bits and an accuracy of ±0.1% of full scale (some sources indicate an accuracy of ±0.05% of full scale).
The AO820 module supports a variety of communication protocols such as fieldbus DP, Hart, Foundation Fieldbus and Modbus remote terminal devices.
| ABB | AX670 |
| ABB | AX722F 3BDH000377R0001 |
| ABB | BC810 |
| ABB | BC810K01 |
| ABB | BCU-01 |
| ABB | BCU-02 |
| ABB | BRC400 |
| ABB | CDP312R 64378660G |
| ABB | CI502 |
| ABB | CI522A |
| ABB | CI532V09 |
| ABB | CI540 3BSE001077R1g |
| ABB | CI546 3BSE012545R1 |
| ABB | CI570 3BSE001440R1 |
| ABB | CI627A |
