Allen Bradley 1746SC-IB8I SLC 500 Isolated DC Input Module

FAQ

Q1: What kind of module is the 1746SC‑IB8I?
It is an isolated 8‑channel DC input module for Allen‑Bradley SLC 500 programmable controllers.

Q2: What input voltage range is supported?
The module accepts discrete DC input voltages typically from 12 V up to 32 V, with 24 V DC nominal.

Q3: How many isolated inputs does the module have?
It has eight independent isolated input channels, each with its own common.

Q4: What is the nominal input current per channel?
Each input draws approximately 12 mA at nominal DC voltage.

Q5: What level of isolation voltage does it provide?
Inputs are isolated up to about 1500 V AC between points to improve noise immunity and safety.

Q6: What are the physical size and weight of this module?
Its dimensions are about 5.5 × 1.3 × 5.7 in (140 × 33 × 145 mm), and it weighs roughly 0.23 kg.

Q7: What environmental conditions does it support?
It is rated for operation from 0 °C to 60 °C with up to ~95 % non‑condensing humidity.

Q8: Is the 1746SC‑IB8I still in production?
No, it is considered a legacy/discontinued SLC 500 series I/O module.