1771-IA2 8-Channel AC/DC Input Module Allen-Bradley PLC5

มีสินค้าในสต็อก (20 ชิ้น) พร้อมจัดส่งแล้ว

ผู้ขาย:
Allen-Bradley
ประเภท:
Input Module
Country of Origin:
USA
Dimensions:
8.9*16.5*5.1cm
Weight:
500 g
แท็ก: Input module

จำนวน

Allen-Bradley 1771-IA2 120V AC/DC Digital Input Module – PLC5 Series

Key Technical Specifications

Brand: Allen-Bradley | Catalog No.: 1771-IA2
Module Type: 8-channel digital AC/DC input module for PLC5 systems. Intended for use with 1771-IA2 compatible AC/DC proximity switches.
Voltage Range: Operates from 87-138V AC and 97-138V DC. Nominal 120V AC/DC category ensures broad compatibility.
Signal Delays: AC On/Off delay typically 24ms (±10ms). DC On delay 10ms (±4ms); DC Off delay 20ms (±9ms). Built-in input filtering reduces electrical noise.
Off-State Current: Maximum 2.8mA AC or DC ensures reliable off-state detection without false triggering.
Backplane Load: Draws only 75mA from the 1771 chassis backplane. Power dissipation max 10.7W (36.5 BTU/hr).
Isolation: Optoelectrical isolation protects logic circuits from electrical transients and voltage spikes.
Physical Dimensions: 3.5 x 6.5 x 2.0 inches (89 x 165 x 51 mm). Keying bands between pins 10-12 (upper) and 4-6 (lower) for proper slot alignment.

Installation & Addressing

Mounts in any single slot of a 1771 I/O chassis containing a PLC5 processor. Supports ½, 1, and 2-slot I/O addressing modes.
Use the included 1771-WA wiring arm for field wiring termination. This removable arm preserves existing wiring during module replacement.
Eight orange status indicators on the front panel provide immediate visual feedback for each input channel's on/off state.
Series A module with straightforward configuration via PLC programming software.

Frequently Asked Questions (FAQ)

Q: What makes the 1771-IA2 different from the standard 1771-IA?
A: The 1771-IA2 is specifically intended for use with AC/DC proximity switches, though it functions identically to the 1771-IA for general-purpose 120V AC/DC inputs. Both share the same electrical specifications.
Q: Can I use this module with 24V DC sensors?
A: No. The 1771-IA2 requires 97-138V DC minimum. It does not operate at 24V DC levels.
Q: What does the 2.8mA off-state current specification mean?
A: It means the module tolerates up to 2.8mA leakage current without registering an ON state. This prevents false triggering from leaky proximity switches or long cable capacitance.
Q: How do I replace the module without rewiring?
A: Simply unplug the 1771-WA wiring arm from the old 1771-IA2, remove the module, install the new one, and reattach the arm. Your field wiring remains untouched.
Q: What is the typical response time for proximity switches?
A: AC proximity switches see a 24ms (±10ms) on/off delay. DC switches see 10ms (±4ms) on delay and 20ms (±9ms) off delay due to the module's input filtering.
Q: Do you ship internationally, and what carriers do you use?
A: Yes, we ship worldwide via FedEx, UPS, or DHL. We dispatch within 5 days of order confirmation.