Product Overview
1771-IBD from Allen‑Bradley / Rockwell Automation is a digital DC input module from the 1771 product bulletin. It provides sixteen (16) 10‑30VDC sink input channels. The module reads ON/OFF signals from field devices like switches and sensors. It fits all 1771 I/O chassis except 1771‑A1, ‑A2, and ‑A4. With fast 1 ms response and LED status indicators, it offers reliable discrete input processing for PLC systems.
The 1771‑IBD uses a removable wiring arm (1771‑WH) for easy maintenance. It supports ½, 1, and 2‑slot addressing. Optoelectrical isolation and input filtering protect against noise and transients. This module is ideal for source‑switching devices, pushbuttons, and selector switches in industrial control panels.
Technical Specifications
| Brand | Allen‑Bradley / Rockwell Automation |
| Model | 1771‑IBD |
| Series | 1771 Product Bulletin |
| Type | Digital DC Input Module |
| Number of Inputs | 16 (sink, 10‑30 VDC) |
| Operating Voltage | 10‑30 VDC |
| Min On‑State Voltage | 10 VDC |
| Max Off‑State Voltage | 5 VDC |
| Off‑State Current (max) | 2.0 mA @5 VDC |
| Input Delay (OFF‑ON) | 1 ms |
| Input Delay (ON‑OFF) | 1 ms or 6 ms (selectable) |
| Power Dissipation | 7.3 W max / 1.0 W min |
| Thermal Dissipation | 24.7 BTU/hr max / 3.4 BTU/hr min |
| Backplane Current | 130 mA @5 VDC +5% |
| Isolation | Optoelectrical (transient protection) |
| Keying | Upper: 16‑18; Lower: 10‑12 |
| Wiring Arm | 1771‑WH (included) |
| Dimensions | 3.5 x 6.5 x 2.0 in (89 x 165 x 51 mm) |
| Slot Width | 1 |
Compatibility & Installation
- Compatible chassis: all 1771 I/O chassis except 1771‑A1, ‑A2, and ‑A4
- Addressing: supports ½, 1, and 2‑slot I/O addressing
- Keying bands: upper connector pins 16‑18; lower connector pins 10‑12
- Wiring arm: 1771‑WH with screw torque 7‑9 in‑lbs
- Mounting: install in any available slot with a PLC processor
Diagnostics & Maintenance
- 18 LED indicators – 1 green for module status, 16 red for input channel status
- Removable wiring arm – replace module without disconnecting field wires
- Input filtering reduces electrical noise for stable readings
- Optoelectrical isolation protects backplane from transients
Typical Applications
- Discrete input interfacing for pushbuttons, selector switches, and limit switches
- Dry‑contact and electro‑mechanical transmitter monitoring
- ON/OFF control in conveyor systems, packaging machines, and assembly lines
- Integration with PLC processors in 1771 chassis – compatible with Modicon Quantum via bridging
Why Buy From Oiltech Controls?
- 15+ years supplying industrial automation spare parts
- Global shipping with FedEx, UPS, and DHL
- Every unit tested – surplus and refurbished options available
- 12‑month warranty for peace of mind
- Technical verification performed before shipment
- Expert support for obsolete control systems
FAQ
Q: What is the input voltage range?
It accepts 10‑30 VDC sink inputs (source load).
Q: Can I use this module with a 1771‑A1 chassis?
No. It is compatible with all 1771 chassis except 1771‑A1, ‑A2, and ‑A4.
Q: How do I know which keying position to use?
Set keying bands between pins 16‑18 (upper) and 10‑12 (lower).
Q: What is the input delay time?
OFF‑ON delay is 1 ms. ON‑OFF delay is selectable 1 ms or 6 ms.
Q: Does it include a wiring arm?
Yes, the 1771‑WH wiring arm is included.
Shipping & Certifications
- Shipping: FedEx, UPS, DHL – worldwide delivery
- Certifications: UL, CSA (Rockwell standard)
- Package includes: 1771‑IBD module, 1771‑WH wiring arm, installation guide (cables not included)
For inquiries: info@oiltechcontrols.com | +86 158 8020 0923 (WhatsApp)
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Original Source: https://www.oiltechcontrols.com/
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