Products Description
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Technical Specifications
| Parameter | Specification |
|---|---|
| Product Name | Allen-Bradley 1771-IMD/B Digital AC Input Module |
| Product Type | PLC Digital Input Module |
| Manufacturer | Rockwell Automation / Allen-Bradley |
| Series | PLC-5 (1771 Series, Revision B) |
| Number of Inputs | 16 Points |
| Input Voltage Range | 10–30 V AC (nominal 24 V AC systems) |
| Input Frequency | 47–63 Hz |
| Input Type | Isolated AC digital input |
| Input Delay | ~1 cycle + filtering (typical 8–20 ms) |
| Backplane Current | 170 mA @ 5 V DC |
| Power Dissipation | Up to 6 W |
| Wiring Arm | 1771-WH |
| Mounting Type | 1771 I/O chassis module |
| Operating Temperature | 0°C to 60°C |
| Dimensions (L × W × H) | 152 mm × 51 mm × 279 mm |
| Weight | 0.5 kg (approx. 1.1 lbs) |
| Lifecycle Status | Discontinued (legacy PLC-5 system) |
FAQ
FAQ
Q1. What is the 1771-IMD/B used for?
It is used to interface 24V AC field devices such as switches, sensors, and relays with PLC-5 systems.
Q2. How many input channels does it provide?
It provides 16 isolated AC input channels.
Q3. What voltage does it support?
It is designed for 10–30 V AC input signals, typically 24 V AC systems.
Q4. What PLC system is it compatible with?
It is compatible with Allen-Bradley PLC-5 systems using the 1771 I/O chassis.
Q5. What is the response time?
It typically responds within 8–20 ms depending on signal conditions.
Q6. What are the physical dimensions?
Approximately 152 mm × 51 mm × 279 mm.
Q7. What is the weight of the module?
About 0.5 kg (1.1 lbs).
Q8. Is the 1771-IMD/B still manufactured?
No, it is discontinued but still widely used in existing industrial installations.
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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.
