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ABB DSAO120｜Analog Output Board｜
DSAO120
Specification
Number of channels: 8 independent analog outputs
Output signal (software single channel configuration)
Current: 0-20mA, 4-20mA; Voltage: 0-10V, ± 10V
4-20mA maximum load 750 Ω, supports long line regulating valve circuit
DA conversion: 12 bit resolution, typical full-scale accuracy ± 0.1% FS
Electrical isolation (DSAO120A core advantage)
500V AC optoelectronic isolation between channel to ground, on-site side, and system backplane to eliminate ground loop interference
Diagnostic function
Single channel short circuit, overload, and disconnection detection, dual alarm of panel LED and upper system
Power supply: DRA02 rack backplane 24VDC bus power supply, no external power supply required
environmental parameters
Working temperature: -20 ℃~+55 ℃; Humidity 5% -95% RH without condensation; Installation inside IP20 cabinet
Physical dimensions: 324 × 27 × 234 mm, net weight approximately 0.37kg
Function
Convert the PID operation values of the controller into standard analog signals to drive the regulating valve, frequency converter, and valve positioner;
The isolated version DSAO120A is suitable for strong electromagnetic fields in power plants, chemical and metallurgical industries, and is resistant to frequency converters and high-voltage interference;
Support hot swapping, online replacement does not affect the operation of other modules in the rack;
Optional DSAO120AK01 version, native compatible with HART intelligent valve communication.
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