Allen-Bradley 1771-IGD/A Digital DC Input Module
$123.00
$320.00
Description
Allen-Bradley 1771-IGD/A Digital DC Input Module
The Allen-Bradley 1771-IGD/A, also cataloged as the 1771-IGD Digital DC Input Module, operates as a dedicated hardware component for discrete signal acquisition within PLC-5 I/O chassis platforms. It provides 16 point DC input monitoring with optoelectrical isolation, selectable input filtering, and channel status indication for field device interface.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1771-IGD/A |
| Brand | Allen-Bradley (Rockwell Automation) |
| Origin | United States |
| Module Type | Digital DC Input Module |
| Product Family | PLC-5 |
| Input Configuration | 16 point sinking DC inputs |
| Input Voltage Range | 10-60 VDC |
| Logic Input Type | Digital DC |
| Input Current | Approximately 10 mA per channel |
| Off-State Current | <=2 mA |
| Response Time | Selectable 1 ms or 6 ms |
| Isolation | Optoelectrical isolation with input filtering |
| Backplane Current | 130 mA @ 5 VDC |
| Power Consumption | 6 W |
| Weight | 1.00 lbs |
| Dimensions | 237.5 x 183 x 55 mm |
| Operating Temp | 0 to 60 deg C |
| Storage Temp | -40 to 85 deg C |
| Wiring Arm | 1771-WH |
| Mounting Style | Rack mount |
| Compatibility | PLC-5 processors and 1771 I/O chassis |
PLC-5 Digital Input Signal Processing
The 1771-IGD/A module processes discrete DC field signals through 16 input channels connected to the PLC-5 backplane system. The input circuitry supports selectable delay filtering to control response behavior during signal transitions. LED indicators provide individual channel state feedback for input verification and troubleshooting.
The Allen-Bradley PLC-5 architecture uses rack-based I/O communication with block transfer and backplane data exchange mechanisms. The module design supports I/O density scaling within 1771 chassis configurations while maintaining isolated field-side signal handling.
Frequently Asked Questions
Q: What type of field signals can the 1771-IGD/A accept?
A: The module accepts discrete DC input signals within the specified input voltage range. It is configured for connection to switches, sensors, and other digital field devices.
Q: Does the 1771-IGD/A provide electrical isolation between field inputs and the PLC backplane?
A: Yes. The module uses optoelectrical isolation between field input circuits and the PLC-5 backplane interface.
Q: What wiring arm is compatible with the 1771-IGD/A module?
A: The compatible wiring arm is the 1771-WH terminal assembly.
Field Installation Guidelines
Install the 1771-IGD/A module in a compatible 1771 I/O chassis slot and verify rack power removal before module insertion or removal. Connect field wiring through the specified wiring arm while maintaining separation between input signal conductors and high-voltage switching cables.
Use proper grounding practices for the chassis and cable shields where applicable. Route DC input wiring to minimize exposure to electromagnetic interference sources such as motor feeders and contactor circuits. Confirm input polarity, voltage level, and terminal assignments before applying field power.
Features
Minimum Order Quantity (MOQ)
We welcome bulk orders and have a minimum order quantity of just one unit.
Certificates and Documentation
Upon request, we can provide all necessary documentation, including Certificates of Origin/Conformance and other required export documents.
Delivery Time
For items in stock, we aim to deliver within 1-3 days after payment confirmation. Items with specified lead times will be delivered according to the quoted schedule.
Payment Methods
We accept 100% T/T (Telegraphic Transfer) payment before shipping. For items with lead times, a 30% deposit is required upfront, with the remaining 70% due before shipment. For RMB transfers, please contact us if you have an agent in China.
Warranty
We offer a standard one-year warranty on all new and original items. If you require an extended warranty, please contact us for additional cost details.
Refund and Return Policy
Your satisfaction is important to us. If you need to return an item, it must be done within 30 days of the order date. The product must be unused, unopened, and in its original packaging with all accessories included. Refunds are processed within 5-7 business days after we receive the returned item. Please note that shipping and related charges are non-refundable.
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