1756-OB16D: Diagnostic DC Output Module
The 1756-OB16D is the Diagnostic DC Output Module covered on this page. The attribute that decides whether it fits the existing installation without modification is 24 Volts DC Source.
The reason to specify this exact variant is diagnostic dc output module. A processor or controller is selected on memory, scan time and platform compatibility before anything else. diagnostic dc output module sets how much programme fits, how fast the logic executes and which I/O and networks the unit can host — the three things that decide whether an existing application migrates without a rewrite. Confirming 24 Volts DC Source against the installed controller family is the check that prevents a processor that boots but cannot run the existing project.
| Feature | Specification |
|---|---|
| Manufacturer | Rockwell Automation |
| Brand | Allen-Bradley |
| Part Number | 1756-OB16D |
| Module Type | Diagnostic DC Output Module |
| Outputs | 16-Point Diagnostic |
| Voltage | 24 Volts DC Source |
| Operating Voltage Range | 19.2-30 Volts DC |
| Maximum Output Current Rating-Point | 2 Amps at 30 degrees Celsius and 1 Amp at 60 degrees Celsius |
| Maximum Output Current Rating-Module | 8 Amps at 30 degrees Celsius and 4 Amps at 60 degrees Celsius |
| Power Dissipation (Max) | 3.3 Watts at 60 Celsius |
| Backplane Current at 5 Volts | 250 milliamps |
| Backplane Current at 24 Volts | 140 milliamps |
| Isolation Voltage | 50 Volts Continuous. |
Related Configurations
Other published configurations in the same family — confirm the distinguishing specification against your installation:
| Related Part Number | Configuration Difference |
|---|---|
| allen-bradley-1756-ob16dk-controllogix-diagnostic-dc-output-module | confirm the configuration against your installation |
Availability & Condition at AutoDCSTech
| Part Number | 1756-OB16D |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
