Allen Bradley 1746-OB16 SLC 500 16‑Channel DC Discrete Output Module

FAQ

Q1: What is the 1746‑OB16 module used for?
It is a 16‑channel DC output module for sourcing discrete DC signals in an Allen‑Bradley SLC 500 PLC.

Q2: What voltage does this module switch?
It supports DC output voltages typically from 10 V up to 50 V, with nominal 24 V DC operation.

Q3: How much current can each output channel provide?
Each output can continuously provide about 0.5 A at 30 °C and about 0.25 A at 60 °C.

Q4: What is the total module current capacity?
The module can handle about 8.0 A total at 30 °C and about 4.0 A at 60 °C.

Q5: What are the signal response times?
Typical ON signal delay is about 0.1 ms and OFF delay about 1.0 ms.

Q6: What are the physical dimensions and weight?
Approximate dimensions are 57 mm × 168 mm × 247 mm and weight is about 0.39 kg.

Q7: What isolation ratings does the 1746‑OB16 have?
It provides ~500 V DC isolation from field wiring to common circuits and ~1500 V AC isolation to the backplane.

Q8: Is the 1746‑OB16 still manufactured?
No, it was discontinued on September 30, 2024 and is now a legacy SLC 500 output module.

1746-OB16 Allen Bradley

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