Products Description
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Technical Specifications
| Parameter | Specification |
|---|---|
| Product Name | Allen-Bradley 1771-NIS/B AC Isolated Input Module |
| Product Type | PLC AC Digital Input Module |
| Manufacturer | Rockwell Automation / Allen-Bradley |
| Series | PLC-5 (1771 Series, Revision B) |
| Number of Inputs | 16 Points |
| Input Voltage Range | 85–132 V AC (nominal 120 V AC systems) |
| Input Frequency | 47–63 Hz |
| Input Type | Optically isolated AC inputs |
| Input Delay | ~1 cycle + filtering (typically 8–25 ms) |
| Backplane Current | 200 mA @ 5 V DC |
| Power Dissipation | Up to 8 W |
| Wiring Arm | 1771-WH |
| Mounting Type | Installed in 1771 I/O chassis |
| Operating Temperature | 0°C to 60°C |
| Dimensions (L × W × H) | 152 mm × 51 mm × 279 mm |
| Weight | 0.6 kg (approx. 1.3 lbs) |
| Lifecycle Status | Discontinued (legacy PLC-5 system) |
FAQ
FAQ
Q1. What is the 1771-NIS/B used for?
It is used to interface 120 V AC field devices such as switches and relays with PLC-5 systems.
Q2. How many input channels does it provide?
It provides 16 isolated AC input channels.
Q3. What voltage range does it support?
It supports 85–132 V AC input signals.
Q4. What PLC system is it compatible with?
It is designed for Allen-Bradley PLC-5 systems using the 1771 I/O chassis.
Q5. What type of isolation does it use?
It uses optical isolation for improved noise immunity and safety.
Q6. What is the response time?
Typically around 8–25 ms depending on signal conditions.
Q7. What are the physical dimensions?
Approximately 152 mm × 51 mm × 279 mm.
Q8. What is the weight of the module?
Approximately 0.6 kg (about 1.3 lbs).
Tags
Packing & Delivery
We will use wear-resistant cartons to seal the boxes, and take photos for your confirmation before sealing. We will pack the boxes only after confirmation.
For express delivery, we will use DHL, UPS, TNT, FedEx and EMS.
Please rest assured that we have a deep cooperation with express delivery companies and can ensure that your goods are delivered to you in good condition.
