ABB 3BSE045584R1 AO845A Analog Output Module Hart 4-20mA

AO845/AO845A Analog Output Module, for Single or Redundant Applications

The AO845/AO845A Analog Output Module has 8 analog outputs. The state of outputs

can be set to a predetermined (OSP) value if a communication error is detected. The

module has advanced onboard diagnostics and HART pass-through functionality.

It can be used in both single and redundant applications. The nominal output range is:

4...20mA.

Features

• 8 channels of 4...20 mA outputs.

• For single or redundant applications.

• OSP sets outputs to the predetermined stateupon error detection.

• 1 group of 8 channels isolated from the ground.

• Analog Output is to be short circuit securedto ZP or +24 V.

• Advanced on-board diagnostics.

• 12-bit resolution.

• HART pass-through communication.

Description

The AO845/AO845A Analog Output Modulefor single or redundant applications has 8

unipolar analog output channels.

The module performs self-diagnostic cyclically.Module diagnostics include:

• External Channel Error is reported (onlyreported on active channels) if the process

the power supply that supply voltage to outputcircuitry is too low or the output current is

less than the output set value and the outputset value > 1 mA (open circuit).

• Internal Channel Error is reported if the output circuit can not give the rightcurrent value. In a redundant pair, the module will be commanded to an error stateby the ModuleBus master.

Module Error is reported in case of Output Transistor Error, Short Circuit,Checksum Error, Internal Power Supply Error, Status Link Error, Watchdog, orWrong OSP behavior.

Besides ABB, we also handle: