Product Overview

The Allen-Bradley 1201-HAS2​ is a plug-in Human Interface Module (HIM) built for the Allen-Bradley 1336 series of adjustable frequency AC drives. Mounted directly on the drive, it combines a programmer and a controller function in one unit, giving maintenance and commissioning staff a local screen and physical keypad for setting parameters, reading operating values and clearing faults without connecting a laptop. In the 1336 accessory catalog, the Allen-Bradley 1201-HAS2​ is the option that turns a drive from a black box into something an electrician can work with at the panel door.Functionally, the Allen-Bradley 1201-HAS2​ handles the same tasks that drive configuration software performs over a serial link, but through its own display and keys. Operators scroll through parameter numbers, change values, start and stop the motor, monitor output speed and current, and pull up the fault queue when the drive trips. The module also carries an analog potentiometer for local speed reference. Because it is powered from the drive itself at 5 V DC, no separate supply or wiring is needed beyond seating the module in its connector.The Allen-Bradley 1201-HAS2​ is supplied in a NEMA 1 / IP20 style enclosure intended for indoor use inside a control cabinet, and it is the Series A revision of the 1201-HAS2 designation. Rockwell has discontinued the product along with the wider 1336 drive platform, so supply today comes from new surplus stock and refurbished units. For plants still running 1336 Plus, 1336 Force or 1336 IMPACT drives, keeping a tested 1201-HAS2​ on the shelf is what prevents a lost HMI from turning into a drive migration project.Note on published data: several distributor listings attribute this part number to other manufacturers and quote unrelated specifications such as Modbus RTU, Ethernet/IP, 24 V DC supply or a 7-inch display. Those figures are not consistent with Rockwell documentation for the 1336 accessory and should not be used for purchasing decisions.

Technical Specifications

Main Features and Advantages

Local programming without a laptop: The Allen-Bradley 1201-HAS2​ puts the entire parameter set of a 1336 drive behind a keypad and screen mounted at the equipment. Technicians change accel times, current limits and speed references in the field, which removes the need to carry a programming cable and a configured PC to every drive in the plant.Fault diagnosis at the point of failure: When a 1336 drive trips, the Allen-Bradley 1201-HAS2​ shows the fault code and the operating values recorded at the time of the trip. That immediate visibility is the difference between resetting a drive and actually understanding why it tripped, and it shortens the diagnostic loop considerably on intermittent faults.Start, stop and speed control in one unit: Beyond programming, the Allen-Bradley 1201-HAS2​ works as a local operator station. It provides start and stop control plus an analog potentiometer for speed reference, which is useful during commissioning, during mechanical run-in, or as a fallback when the remote control system is unavailable.No external power or wiring: Powered at 5 V DC from the drive and communicating over a dedicated interface, the Allen-Bradley 1201-HAS2​ installs by plugging in. There is no auxiliary supply to wire, no address to set, and no configuration software required for the module itself to work.Rugged enough for the panel environment: Housed in a NEMA 1 enclosure rated for indoor industrial use, the Allen-Bradley 1201-HAS2​ tolerates the temperature and humidity conditions normally found in a motor control centre, provided the stated limits of 50 °C and 95 % relative humidity are respected.Lifecycle protection for a discontinued platform: Because the 1336 family is obsolete, the Allen-Bradley 1201-HAS2​ is a classic last-time-buy spare. Holding one or two tested units across a site converts an unplanned outage — where the alternative is either blind operation or a forced drive upgrade — into a short, same-shift replacement.

Application Field

Drive commissioning is the natural home of the Allen-Bradley 1201-HAS2. On a new installation or a motor replacement, the commissioning engineer uses the module to enter motor nameplate data, set current limits, configure accel and decel ramps and run the motor up under local control before handing it over to the PLC. Without the HIM, every one of those steps requires a serial connection and a computer at the drive.Routine maintenance and troubleshooting form the second use case. Plants running 1336 drives on fans, pumps, conveyors and compressors rely on the Allen-Bradley 1201-HAS2​ to read output current, DC bus voltage and the fault history during rounds. This is particularly valuable on intermittent overcurrent or ground faults, where the value of the module is not the parameter setting but the ability to see what the drive saw at the moment it tripped.Retrofit and brownfield sites represent the largest installed base today. Many water and wastewater plants, HVAC systems, pulp and paper mills and older manufacturing lines still run 1336 Plus or 1336 Force drives that have years of service life remaining. For those facilities, the Allen-Bradley 1201-HAS2​ is both a working tool and an insurance policy: it keeps the existing fleet maintainable without forcing a migration to PowerFlex hardware.A related use is as a temporary diagnostic tool. Service organisations keep a single Allen-Bradley 1201-HAS2​ in a toolkit, move it from drive to drive during a shutdown, and use it to standardise parameters across a population of machines before removing it again.