Allen-Bradley 1746-OBP16 SLC 500 Digital DC Output Module

Manufacturer

Allen Bradley

Category

PLCs

Product Line

SLC 500

Part Number

1746-OBP16

UPC

662468166010

Weight

0.56 lbs (0.26 kg)

Module Type

Digital DC Output Module

Outputs

16

Voltage Range

20.4-26.4 Volts DC Source

No. of Outputs

Sixteen (16)

Current/Output

1.5 or 1 amps

Current/Module

6.4 amps

Backplane Current (5 Volts)

250 milliamps

Applications

High Current

Fuse Protection

Yes

Step Response

60 milliseconds in, 2.5 milliseconds out

The 1746-OBP16 is a Sixteen (16) channel Discrete Output module from the SLC 500 product family. It provides 24VDC output with integrated fuse for short-circuit protection.

This module occupies single slot of an SLC 500 chassis. It is compatible with fixed or modular style hardware.

The 1746-OB32 features an integrated fuse that protects the module from channel short-circuit and overload current. The E-FEUSE LED that is provided in the front panel of the module will illuminate to indicate presence of such condition. Other channels will continue to operate as the electronic protection are individual for each channel.

It is considered a channel shutdown when the error has been detected. To allow the channel to recover from the fault condition, the SLC 500 system power must be removed and the actual error must be corrected. Once the actual source of error has been corrected, the system power may be applied, and the module automatically reset and resumes providing control output. This automatic fault recovery must be taken into consideration as part of the system’s fail-safe operating conditions.

Compatible replacement fuse for the integrated electronic fuse are Littelfuse #322010,10A or #332010,10A. This fuse component is to maintain UL/CSA rating. Allen-Bradley’s fuse catalog number is 1746-F8 which is comprised of Five (5) fuse per kit. This fuse may be easily replaced however, it requires pulling out of module from the chassis.

Questions: 

How does the AB 1746-OBP16 optimize high-density DC output control within SLC 500 automation architectures?

Answer: 

The AB 1746-OBP16 is a 16-point sourcing DC output module engineered for SLC 500 systems. Its high-density design enables efficient control of multiple field devices while maximizing chassis space utilization and reducing overall system complexity.

Questions: 

What electrical isolation and protection mechanisms are incorporated into the AB 1746-OBP16 to enhance operational resilience?

Answer: 

The AB 1746-OBP16 incorporates robust output circuitry designed to withstand industrial electrical disturbances. Its integrated protection features help minimize the effects of transient voltages, contributing to reliable long-term operation in demanding environments.

Questions: 

Why is the AB 1746-OBP16 particularly advantageous for interfacing with modern solid-state actuators and field instrumentation?

Answer: 

The AB 1746-OBP16 provides fast-response sourcing DC outputs that are well-suited for driving electronic loads such as solenoid valves, pilot relays, indicators, and other solid-state devices requiring dependable switching performance.

Questions: 

What key engineering considerations should be evaluated when deploying the AB 1746-OBP16 in mission-critical control applications?

Answer: .

When implementing the AB 1746-OBP16, engineers should assess load current requirements, output voltage compatibility, wiring topology, thermal conditions, and overall system power budgeting to ensure optimal module performance and reliability

Questions:

How does the AB 1746-OBP16 contribute to deterministic control strategies in advanced manufacturing environments?

Answer: 

The AB 1746-OBP16 delivers precise and repeatable output switching characteristics, enabling deterministic execution of control sequences. This capability supports improved machine synchronization, process consistency, and enhanced production efficiency.

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