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1771-IND Allen-Bradley
Original price
$450.00
-
Original price
$1,499.98
Original price
$1,499.98
$450.00
-
$1,499.98
Current price
$1,499.98
Trusted By
Product Details
Specifications provided for reference. Verify critical details against official manufacturer documentation before installation.
Product Overview
The 1771-IND is an AC/DC digital input module in the Allen-Bradley 1771 PLC-5 I/O family. It provides 16 discrete inputs for monitoring field signals and interfaces via the Bulletin 1771 backplane. The module supports both AC (16-30 V AC) and DC (9-30 V DC) input voltages, making it suitable for industrial control logic tasks. Its primary role is to capture on/off status from devices such as limit switches or pushbuttons and relay that information to the PLC. Applications include discrete signal processing in manufacturing, packaging, and machine control environments.
Best Suited For
- Legacy PLC-5 based control systems
- Discrete signal monitoring (limit switches, pushbuttons)
- Mixed-voltage AC/DC field input environments
- Applications requiring backplane-powered input integration
Number of inputs
16
AC input range
16-30 V AC
DC input range
9-30 V DC
Backplane current
250 mA
Power dissipation (max)
8.3 W
Technical Specifications
I/O & Electrical
Number of inputs
16
AC input voltage range
16-30 V AC
DC input voltage range
9-30 V DC
On-state voltage range
16-30 V AC; 9-30 V DC
Off-state maximum voltage
5 V AC; 3.7 V DC
Off-state current (max)
1.5 mA @ 5 V AC; 0.6 mA @ 5 V DC
Input impedance
0.68 µF in parallel with 6.28 kΩ (3.9 kΩ at 60 Hz) in series with 100 Ω
Communication & Power
Backplane current
250 mA @ 5 V DC
Power dissipation
8.3 W (max); 1.3 W (min)
Physical & Environmental
Enclosure type
Open-style (no enclosure)
