Analog Output Module

1. Core Technical Parameters

Backplane Supply：24 VDC

Analog Output Channels：8 isolated channels

Output Signal Range：4–20 mA

Channel Resolution：16-bit

Group Isolation Voltage：2500 VAC

Operating Temperature：-20℃ ~ +70℃

Support Terminal Unit：TU810, TU818V1 series

2. Compatibility & Expandability

Same-brand Compatibility

ABB AO815 is a high-precision analog output module belonging to ABB S800 I/O system. Automation technicians install multiple ABB AO815 on DSBB backplanes to expand analog control channels for valve and actuator regulation. ABB AO815 inserts standard single rack slots and receives digital control values from ABB PM856AK01 CPU without extra signal conversion boards. Matching terminal bases lock firmly under ABB AO815 to transmit steady analog control signals to all factory ABB positioning valves and frequency converters.

Cross-brand Compatibility

Exclusive S800 backplane bus architecture prevents direct rack mounting of ABB AO815 on third-party PLC cabinets. External signal transfer terminal blocks are required to build control signal links connecting ABB AO815 with Siemens and Schneider control hosts. Standard 4–20mA industrial output specification allows ABB AO815 to drive most aftermarket proportional actuators with no internal circuit refitting.

3. Lifecycle Cost Analysis

Service cycle of ABB AO815 covers 10 years, exchange rate:1USD=7.2CNY, purchase and installation fees are excluded from all cost statistics

Annual routine maintenance cost: Output linearity calibration and internal dust clearance for ABB AO815 costs 31 USD per year, total 10-year maintenance expense: 310 USD

Spare part replacement cost: Digital-to-analog conversion chip damage of ABB AO815 generally occurs once every 8 years, single spare module price: 412 USD, total replacement expense within 10 years: 412 USD

Retrofit expense saving: Existing cabinet wiring layout fully fits ABB AO815 during DCS system upgrade, saving 244 USD extra wiring labor cost compared with incompatible substitute analog output modules

Total cumulative running cost for single ABB AO815 across ten service years: 478 USD