Product image is representative; revision or series may vary.
Contact us to request a specific version.
Contact us to request a specific version.
1771-OAD Allen-Bradley
Original price
$450.00
-
Original price
$516.00
Original price
$450.00
$450.00
-
$516.00
Current price
$450.00
Trusted By
Product Details
Specifications provided for reference. Verify critical details against official manufacturer documentation before installation.
Product Overview
The 1771-OAD is an Allen-Bradley PLC-5 discrete AC output module, providing 16 individually programmable output channels. Designed for the 1771 I/O chassis (excluding 1771-A1, -A2, and -A4), it supplies AC output in the 10-138 VAC range to interface with devices such as pilot lights, solenoids, or indicators. It draws power from the chassis backplane and supports zero-cross switching, reducing electrical noise and prolonging contact life. Part number 1771-OAD.
Best Suited For
- PLC-5 systems requiring AC discrete outputs
- Driving AC loads (pilot lights, relay coils, solenoids)
- Applications needing zero-cross switching to minimize inrush
- Usage in industrial automation retrofits with 1771 chassis
Outputs
16
AC Operating Voltage
10-138 VAC
Output Current Rating
2 A per output, 8 A per module
Backplane Current
295 mA
Technical Specifications
I/O & Electrical
Number of outputs
16
Output voltage range
10-138 VAC @ 47-63 Hz
Output current rating
2 A per output; not to exceed 8 A per module
Surge current (max)
25 A per output for 100 ms, repeatable every 1 s
Minimum load current
5 mA per output
On-state voltage drop
1.5 V (<50 mA load), 5.8 V (>50 mA)
Off-state leakage current
3.0 mA per output @ 138 VAC
Signal delay (Off→On)
Zero crossing: 8.3 ms @ 60 Hz; 10.0 ms @ 50 Hz
Communication & Power
Backplane current
295 mA from chassis power supply
Power dissipation
13.0 W (max), 1.5 W (min)
Thermal dissipation
48.0 BTU/hr (max), 5.13 BTU/hr (min)
Physical & Environmental
Compatible chassis
1771-A1B through A4B; 1771-AM1, AM2
Operating temperature
0 °C to 60 °C (32 °F to 140 °F)
Storage temperature
-40 °C to 85 °C (-40 °F to 185 °F)
Relative humidity
5 % to 95 % (non-condensing)
Wire size
14 AWG (2 mm²) stranded max; 3/64 in (1.2 mm) insulation max
Fuse
10 A, 250 V rectifier fuse (¼ × 1¼ in), Littelfuse PN 322010
Certifications
UL ListedCSACSA Class I Div 2CE
Meets or exceeds UL 508 and CSA C22.2 No. 142. Certified UL and CSA Class I, Division 2, Groups A, B, C, D. CE marked for applicable directives.
