1771-QB
The Allen-Bradley 1771-QB is an Allen-Bradley Linear Positioning module. This module is used to integrated machine control features of a PLC as well as provides the PLC with hydraulic performance capability. It has Two (2) independent axis with Two (2) millisecond update rate and capable of implementing Proportional + Integral+ Derivative (PID) and Feed-forward control.
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Technical specifications for 1771-QB
| Manufacturer | Rockwell Automation |
|---|---|
| Backplane Current | 1.6A (max), 1.1A (typical) at 5VDC |
| Module Type | Linear Positioning Module |
| Part Number/Catalog No. | 1771-QB |
| Brand | Allen-Bradley |
| Terminal Block | 40 Terminal 1771-WN |
| Conductors | Conductors Wire Size: 14 gage stranded, (max), 3/64ths inch insulation (max) |
| Module Location | 1771 Universal I/O chassis |
| Positioning Transducer | MTS Temposonics Linear Displacement Transducer; Balluff BTL Linear Displacement Transduce; Norstat GYRG Linear Displacement Transducer |
| Sampling Period | 2 ms |
| Analog output resolution | 12-bit |
| Analog Outputs | +/-10V dc up to 10 mA +/-20 mA up to 600ohms +/-50 mA up to 240 ohms +/-100 mA up to 240 ohms |
| Discrete Outputs | Single-ended, sourcing outputs 100 mA, maximum source drive (ON state) 1.0 mA, maximum source leakage (OFF state) Logic 0: No voltage applied to output (low) Logic 1: User supplied voltage applied to output (high) |
| Discrete Inputs | 8 mA/input (at 12 V DC), 16 mA/input (at 24 V DC), Logic 0: 0-4 V DC Logic 1: 10-30 VDC |
| Inputs | Auxiliary Digital: 8 mA/input (at 12 V DC), 16 mA/input (at 24 V DC), 0-4 V DC Logic 0, 10-30 V DC Logic 1 Transducer |
| Max Input Frequency | N/A |
| Outputs | Auxiliary Digital, Digital Source; Servo Valve, Analog +/- 10 V DC, +/- 20 mA, +/- 50 mA, +/- 100 mA |
| Slots | 1 Slot |
| Module Update Period | 2 ms/axis |
| Wiring Arm | 1771-WN |
| Frequency | 47-63 Hertz |
| Fuse | 3 Amperes, 250 Volts, Normal-Blow |
| Cabling | 1771-PSCC Remote 5.5 ft |
| Paralleled | N/A |
| Location | Stand-Alone |
| Dimensions | 4.5 x 12.4 x 6.3 in (115 x 317 x 160 mm) |
The 1771-QB is an Allen-Bradley Linear positioning module compatible for use with the 1771 Programmable Logic Controller Platform. This module features Two (2) independent axes that may be used to integrate machine control capabilities related to motion control as well as provide the PLC a hydraulic performance.
The 1771-QB has an update rate of 2 miliseconds. It is also capable of implementing Proportional + Integral + Derivate (PID) and Feed-forward control algorithm. This module supports velocities up to 327.67 inches or (3.2767 meters/ second).
The module’s Transducer interface allows direct connections to Temposonics II, or Balluff Linear Displacement Transducers or Norstat transducers. The maximum supported length is 180 inches or 4.572 meters and resolution of +/- 0.002 inches over 180 inches. For higher resolution applications, recirculation may be applied.
The module may also be used for direct connection to servo-controlled valves or servo motor controllers with resolution of 12-bit and output range of +/- 1.0 to +/- 100mA and +/- 0.1 to +/- 10 Volts.
It has Seven (7) discrete input per axis which includes Hardware Start, Jog Forward, Jog Reverse, Hardware Stop, Auto/Manual Selector, and Two (2) user defined General Purpose Inputs. It also has 2 digital outputs per axis which includes In-position and Loop Fault outputs.
The module is also capable of monitoring functions such as Position, Velocity, Servo valve output, Positioning error, and Hydraulic system performance. This module requires single slot of the 1771 backplane and may installed in 1771 Universal I/O chassis. It is also built with internal module diagnostics. This module can control the servo or proportional hydraulic valve or some electrical servos. The position is measured by a linear displacement transducer. This module is also used to control and monitor the linear position of a tool or workpiece along one or two axes. The servo valve can control the flow of the hydraulic fluid into or out of the hydraulic cylinder. The operating temperature of the 1771-QB is from -25-60 deg. C (-13-140 deg. F). The nonoperating temperature of this module is from -40-85 deg. C (-40-185 deg. F). The relative humidity of this module is from 5-95% without condensation. The operating vibration of this module is 2 g at 10-500 Hz. The operating shock of this module is 30 g and the nonoperating shock of this module is 30 g. Before installing or removing your modules, always disconnect the 1771-QB from the system and from other power sources to the module, and disconnect all devices connected to the module. Failure to comply with these precautions may result in undesirable operation and destruction of equipment. The Allen-Bradley 1771-QB is tested to meet Directive 73/23/EEC of the Low Voltage Directive Board, by applying the security requirements EN 61131-2 Programmable Controllers, Part 2 - Equipment Requirements and Testing. The 1771-QB is suitable for use in Class I, Division 2, Group A, B, C, D, or non-hazardous locations only.
| Revision Part # | Also known as | |
|---|---|---|
| 1771-QB Ser A | 1771-QB/A, Series A, Rev A | Request a quote |
| 1771-QB Ser B | 1771-QB/B, Series B, Rev B | Request a quote |
| 1771-QB Ser C | 1771-QB/C, Series C, Rev C | Request a quote |
| Don't see your particular revision? Contact us now. | ||
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What is the module’s update rate?
The module has 2 ms update rate.
How many axes does this linear positioning module have?
This module has 2 Liner positioning axes.
How many slot does this module occupy?
This module is installed in 1771 Universal rack and occupies single module slot.
Allen Bradley PLC 5 Linear Positioning Module, 1 Slot, 2 ms/axis Module Update Period, 1.1 Amperes (typical) and 1.6 Amperes (max) Backplane Current
The 1771-QB is a specialty module used for implementing motion and provide hydraulic performance to the corresponding Programmable Logic Controller (PLC). It provides high update rate compared to standard and counter modules as the 1771-QB has 2 milisecond update time.