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Allen-Bradley - Rockwell Automation PLC-5 System

Series Prefix : 1771, 1785

For decades the PLC-5 system was the most popular of the Allen-Bradley - Rockwell Automation PLC lines. Because it was so reliable and versatile, the PLC-5 has survived the test of time. Qualitrol International provides remanufactured and hard-to-find replacement parts for the Allen-Bradley PLC-5 family. Remanufactured PLC-5 parts are a cost-effective alternative to new PLC-5 Parts.

Whether you need 1771 I/O modules, Processors, or Power Supplies and Racks, Qualitrol has the PLC-5 parts needed to keep your system running for years to come. Each of our remanufactured PLC-5 parts comes with our exclusive 2-year warranty - learn more about our quality remanufacturing process in our Why Use Qualitrol section.

We repair any Allen-Bradley PLC-5 part in house with fast turnaround - call our PLC Repair Hotline today at 1-800-784-9385.

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The Allen-Bradley / Rockwell Automation 1771-A1B I/O Chassis is for the 1771- I/O modules. 1771A1B houses 4 slots. Approximate dimensions are 315 x 229 x 193mm (12.4 x 9.0 x 7.6in.). Approximate weight is 3.6 kg (8.0lbs). The I/O Chassis mounting type is a back-panel mount. 
The Allen-Bradley / Rockwell Automation 1771-A2B I/O Chassis is for the 1771- I/O modules. 1771A2B houses 8 slots. Approximate dimensions are 315 x 356 x 193mm (12.4 x 14.0 x 7.6in.). Approximate weight is 4.7 kg (10.3lbs). The I/O Chassis mounting type is a back-panel mount. 
The Allen-Bradley / Rockwell Automation 1771-A3B I/O Chassis is for the 1771- I/O modules. 1771A3B houses 12 slots. Approximate dimensions are 339 x 484 x 217mm (13.53 x 19.0 x 8.5in.). Approximate weight is 8.7 kg (19.1lbs). The I/O Chassis mounting type is a 19-inch rack mount or back-panel mount. 
The Allen-Bradley / Rockwell Automation 1771-A3B1 I/O Chassis is for the 1771- I/O modules. 1771A3B1 houses 12 slots. Approximate dimensions are 315 x 483 x 193mm (12.4 x 19.0 x 7.6in.). Approximate weight is 5.7 kg (12.6lbs). The I/O Chassis mounting type is a back-panel mount. 
The Allen-Bradley / Rockwell Automation 1771-A4B I/O Chassis is for the 1771- I/O modules. 1771A4B houses 16 slots. Approximate dimensions are 315 x 610 x 193mm (12.4 x 24.0 x 7.6in.). Approximate weight is 6.7 kg (14.8lbs). The I/O Chassis mounting type is a back-panel mount. 
I/O chassis with integral remote I/O adapter and power supply, 1 slot
I/O chassis with integral remote I/O adapter and power supply, 2 slot
The Allen-Bradley / Rockwell Automation 1771-DB is a PLC Basic Communication Module. Communication is block-transfer with PLC-5 processor. Operations for 1771DB include basic programs and C programs.
The Allen-Bradley / Rockwell Automation 1771-IA application is general-purpose 120V AC/DC proximity switches. Operating voltage for 1771IA is 87...123V AC and 97...138V DC. This input module houses 8 inputs. Off-state current max. for 1771-IA is 2.8mA and backplane current load is 75mA. Wiring Arm is the 1771-WA.   
The Allen-Bradley / Rockwell Automation 1771-IAD is a general-purpose 120V AC/DC input. Operating voltage for 1771IAD is 79...138V AC and 79...138V DC. This input module houses 16 inputs. Off-state current max. for this module is 3.0mA AC/ 0.8mA DC and backplane current load is 195mA. Wiring Arm is the 1771-WH. 
The Allen-Bradley / Rockwell Automation 1771-IAN is a general-purpose 120V AC input. Operating voltage for 1771IAN is 85...138V AC. This input module houses 32 (4 sets of 8) inputs. Off-state current max. for this module is 2.3mA at 60Hz and 1.9mA at 50Hz and backplane current load is 280mA. Wiring Arm is the 1771-WN. 
The Allen-Bradley / Rockwell Automation 1771-IB 10...60V DC sink (source load) Digital Input Module houses 8 inputs. Operating voltage for 1771IB is 10...27V. Off-state current max. for this input module is 3.0mA and backplane current load is 74mA. Wiring arm is the 1771-WA. 1771-IB is compatible with source switching devices, including: dry-contact switches, electro-mechanical transmitters, and panel switching devices.   
The Allen-Bradley / Rockwell Automation 1771-IBD 10...60V DC sink (source load) Digital Input Module houses 16 inputs. Operating voltage for 1771IBD is 10...30V. Off-state current max. for this input module is 2.0mA and backplane current load is 130mA. Wiring arm is the 1771-WH. 1771-IBD is compatible with source switching devices, including: dry-contact switches, electro-mechanical transmitters, and panel switching devices.   
The Allen-Bradley / Rockwell Automation 1771-IBN 10...60V DC sink (source load) Digital Input Module houses 32 (4 sets of 8) inputs. Operating voltage for 1771IBN is 10...30V. Off-state current max. for this input module is 1.7mA and backplane current load is 280mA. Wiring arm is the 1771-WN. 1771-IBN is compatible with source switching devices, including: dry-contact switches, electro-mechanical transmitters, and panel switching devices.   
The Allen-Bradley / Rockwell Automation 1771-IC 10...60V DC sink (source load) Digital Input Module houses 8 inputs. Operating voltage for 1771IC is 42...56V. Off-state current max. for this input module is 3.7mA and backplane current load is 74mA. Wiring arm is the 1771-WA. 1771-IC is compatible with source switching devices, including: dry-contact switches, electro-mechanical transmitters, and panel switching devices.   
The Allen-Bradley / Rockwell Automation 1771-ICD 10...60V DC sink (source load) Digital Input Module houses 16 inputs. Operating voltage for 1771ICD is 20...60V. Off-state current max. for this input module is 1.2mA and backplane current load is 250mA. Wiring arm is the 1771-WH. 1771-ICD is compatible with source switching devices, including: dry-contact switches, electro-mechanical transmitters, and panel switching devices.   
The Allen-Bradley / Rockwell Automation 1771-ID are 120V AC/DC isolated-circuit multi-phase applications. 1771ID houses 6 inputs. Operating voltage for this module is 92...138V AC and 92...138V DC. Off-state current max. is 1.7mA and backplane current load is 74mA. Wiring arm is the 1771-WD.    
The Allen-Bradley / Rockwell Automation 1771-ID01 are 220V AC/DC isolated-circuit multi-phase applications. 1771ID01 houses 6 inputs. Operating voltage for this module is 184...276V AC and 18...276V DC. Off-state current max. is 0.7mA AC/ 1.0mA DC and backplane current load is 74mA. Wiring arm is the 1771-WD.    
The Allen-Bradley / Rockwell Automation 1771-ID16 is a general-purpose 120V AC/DC isolated-circuit multi-phase applications. 1771ID16 houses 16 inputs. Operating voltage for this module is 77...138V AC and 105...138V DC. Off-state current max. is 4.0mA AC/ 0.8mA DC and backplane current load is 75mA. Wiring arm is the 1771-WN.    
The Allen-Bradley / Rockwell Automation 1771-IFE Analog Input I/O Module houses 8 differential or 16 single-ended inputs (selectable). 1771IFE voltage ranges from 0...5V DC, 1...5 DC, -+5V DC, -+10V DC. Current range is 4...20mA, 0...20mA, -+20mA. Data format for this module is a natural binary or BCD scaling to -+9999. No external power is required. Resolution is 12 bits +sign. Channel update is 18ms to 8 channels; 36ms to 16 channels. Wiring arm is the 1771-WG. 
The Allen-Bradley / Rockwell Automation 1771-IFF Analog I/O Input Module houses 8 differential or 16 single-ended inputs (selectable). 1771IFF voltage ranges from 0...5V DC, 1...5 DC, -+5V DC, -+10V DC. Current range is 4...20mA, 0...20mA, -+20mA, -+40mA. Data format for this module is a natural binary or BCD scaling to -+9999. No external power is required. Resolution is 12 bits +sign. Channel update is 5ms to 8 channels; 10ms to 16 channels. Wiring arm is the 1771-WG. 
The Allen-Bradley / Rockwell Automation 1771-IFMS Fast Millivolt Input Module houses 8 differential inputs through intrinsically safe connection. 1771IFMS voltage ranges from 0...50mV. Data format for this module is -+9999 BCD to -+32,767 Binary. No external power is required. Resolution is 12 bits. Channel update is 14.5ms to 8 channels. Wiring arm is the 1771-WG. 
Input Module, 5 VDC, 8 pt.
The Allen-Bradley / Rockwell Automation 1771-IGD application is 5V DC TTL interfaces, BCD interfaces encoders (A-B Bulletin 854C). Operating voltage for 1771IGD is 5.0...5.3V (TTL compatible). 1771IGD houses 16 inputs. Backplane current load is 130mA. Wiring arm is the 1771-WH.  
The Allen-Bradley / Rockwell Automation 1771-IH 10...60V DC  sink (source load) Digital Input Module houses 8 inputs. Operating voltage for 1771IH is 24...50V. Backplane current load is 74mA and off-state current max. is 0.7mA. Wiring arm is the 1771-WA. 1771-IH is compatible with source switching devices, including: dry-contact switches, electro-mechanical transmitters, and panel switching devices.   
The Allen-Bradley / Rockwell Automation 1771-IL isolated analog input module houses 8 isolated (1000V) differential inputs. Voltage for 1771IL ranges from 0...5V DC, 1...5V DC, -+5V DC, 0...10V DC, -+10V DC. Backplane current load is 1.3A. External power is not required. Resolution is 15 bits + sign and channel update is 500ms to 8 channels. Data format of 1771-IL is natural binary or BCD scaling to -+9999. Wiring arm is the 1771-WF. 
The 1771-IM is a general purpose 220V AC/DC input module that houses 8 inputs. Operating voltage for 1771IM is 184...276V AC and 184...276V DC. Off-state current max. is 1.0mA and backplane current load is 75mA. Wiring arm is the 1771-WA. 
Input Module, 220 VAC/DC, 16 pt.
The 1771-IN is a general purpose 24V AC input module that houses 8 inputs. Operating voltage for 1771IN is 12...28V AC. Off-state current max. is 2.8mA and backplane current load is 80mA. Wiring arm is the 1771-WA.
The 1771-IND is a general purpose 24V AC/DC input module that houses 16 inputs. Operating voltage for 1771IND is 16...30V AC or 9...30V DC. Off-state current max. is 1.5mA AC or 0.6mA DC and backplane current load is 250mA. Wiring arm is the 1771-WH.
The 1771-IQ application is 10...60V DC source or sink input time-critical signal termination that houses 8 inputs. Operating voltage for 1771IQ is 5...30V. Backplane current load is 150mA. Wiring arm is the 1771-WC.
The 1771-IQ16 application is 10...60V DC source or sink input time-critical signal termination that houses 16 inputs. Operating voltage for 1771IQ16 is 10...32V. Backplane current load is 100mA and the off-state current max. is 2.0mA. Wiring arm is the 1771-WN. 
The Allen-Bradley / Rockwell Automation 1771-IR RTD Input Module houses 6 RTD inputs (three-wire). Voltage range of 1771IR is 100 platinum and 10 copper or other. Backplane current load is 800mA. External power is not required. Wiring arm is the 1771-WF. Resolution is 16 bits and channel update is 50ms to 8 channels. Data format for 1771-IR is natural binary or BCD actual temperature or Ohm readings.  
The Allen-Bradley / Rockwell Automation 1771-IT 10...60V DC sink (source load) Digital Input Module houses 8 inputs. Operating voltage for 1771IT is 12...27V. Backplane current load is 74mA and off-state current max. is 1.3mA. Wiring arm is the 1771-WA. 1771-IT is compatible with source switching devices, including: dry-contact switches, electro-mechanical transmitters, and panel switching devices.   
The Allen-Bradley / Rockwell Automation 1771-IV 10...60V DC source (sink load) Input Signal Termination houses 8 inputs. Operating voltage for 1771IV is 12...24V. Backplane current load is 74mA and off-state current max. is 3.0mA. Wiring arm is the 1771-WA.  
The Allen-Bradley / Rockwell Automation 1771-IVN 10...60V DC source (sink load) Input Signal Termination houses 32 (4 sets of 8) inputs. Operating voltage for 1771IVN is 10...30V. Backplane current load is 280mA and off-state current max. is 1.7mA. Wiring arm is the 1771-WN. 
The Allen-Bradley / Rockwell Automation 1771-IXE Thermocouple Millivolt Input houses 8 floating differential inputs. Voltage range of 1771IXE is type E, J, K, R, S, T, -+99.99mV. Backplane current load is 750mA. External power is not required. Wiring arm is the 1771-WI. Resolution is 15 bits + sign and channel update is 50ms to 8 channels. Data format for 1771-IXE is natural binary or BCD actual temperature or mV readings. 
The Allen-Bradley / Rockwell Automation 1771-IXHR High-Res TC/mV Input Module houses 8 floating differential inputs. Voltage range of 1771IXHR is type B, E, J, K, R, S, T, -+99.99mV. Backplane current load is 750mA. External power is not required. Wiring arm is the 1771-WI. Resolution is 15 bits + sign and channel update is 25ms to 8 channels. Data format for 1771-IXHR is natural binary only. 
The Allen-Bradley / Rockwell Automation 1771-OA 120V AC general-purpose Digital Output Module houses 8 outputs. Operating voltage for 1771OA is 92...138V. Continuous current per output max. is 1.5A and current per module max. is 6A. Backplane current load is 210mA. Wiring arm is the 1771-WA.  
The Allen-Bradley / Rockwell Automation 1771-OAD 120V AC Digital Output Module houses 16 outputs. Operating voltage for 1771OAD is 10...138V. Continuous current per output max. is 2A and current per module max. is 8A. Backplane current load is 295mA. Wiring arm is the 1771-WH. For each output, a blown fuse is reported in the input image table.   
The Allen-Bradley / Rockwell Automation 1771-OAN is a 120/220V AC general-purpose Digital Output Module. This module houses 32 (4 sets pf 8) outputs. Operating voltage for 1771OAN is 80...265V. Current per module max. is 8A. Backplane current load is 800mA. Wiring arm is the 1771-WN.  
Output Module, 10-30 VDC, Source, 8 pt.
The Allen-Bradley / Rockwell Automation 1771-OBD Digital Output Module houses 16 outputs. Operating voltage for 1771OBD is 10...60V. Continuous current per output, max. is 2A and continuous current per module, max. is 8A. Backplane current load is 400mA. Wiring arm is the 1771-WH. 
The Allen-Bradley / Rockwell Automation 1771-OBDS application is electronic fusing/current limiting. Operating voltage for 1771OBDS is 10...40V. This module houses 16 outputs. Continuous current per output max. is 1A and continuous current per module max. is 8A. Backplane current load is 300mA. Wiring arm is the 1771-WH. 
The Allen-Bradley / Rockwell Automation 1771-OBN application is V DC signal termination isolated circuits. Operating voltage for 1771OBN is 10...30V. This module houses 32 (4 sets of 8) outputs. Continuous current per output max. is 0.5A (2A/set) and continuous current per module max. is 8A. Backplane current load is 330mA. Wiring arm is the 1771-WN. 
Output Module, 40-60 VDC, Source, 8 pt.
The Allen-Bradley / Rockwell Automation 1771-OD 120V AC Digital Output Module houses 6 outputs. Its application is isolated circuits; multiple solenoids and transformers. Operating voltage for 1771-OD is 92...138V. Continuous current per output max. is 2A and current per module max. is 6A. Backplane current load is 225mA. Wiring arm is the 1771-WD. 
The Allen-Bradley / Rockwell Automation 1771-OD16 120V AC Digital Output Module houses 16 outputs. Its application is isolated circuits; multiple solenoids and transformers. Operating voltage for 1771-OD16 is 74...138V. Continuous current per output max. is 2A and current per module max. is 8A. Backplane current load is 200mA. Wiring arm is the 1771-WN. 
The Allen-Bradley / Rockwell Automation 1771-ODD 120V AC Digital Output Module houses 16 outputs. Its application is isolated circuits with individual fuse indication; multiple solenoids and transformers. Operating voltage for 1771-ODD is 85...138V. Continuous current per output max. is 2A and current per module max. is 8A. Backplane current load is 420mA. Wiring arm is the 1771-WN. 
The Allen-Bradley / Rockwell Automation 1771-ODZ 120V AC Digital Output Module houses 8 outputs (4 sets of 2). Its application is isolated circuit pairs; replaces 1771-OZ and -OA with resistor, 1771 -IA interlocks. Operating voltage for 1771-ODZ is 92...138V. Continuous current per output max. is 2A and current per module max. is 6A. Backplane current load is 350mA. Wiring arm is the 1771-WD.