Product Description
. . . . . Interface Electronics Kit, 24VAC Adjustable Travel - Johnson Controls R81JAA-1 Plug-In Electronic Board Kits For Series M100 Motor Actuators MRO - R81 plug-in electronic board kits are used in Series M100X base motor actuators, and as replacement or conversion board kits in existing Series M100 proportional motor actuators (not applicable to the M100A). The R81BAA and R81JAA kits consist of a vertical plug-in board, a terminal board with a travel adjustment potentiometer, mounting screws, and an identification label. The R81BAA is for 3-wire 135 to 1000 ohm potentiometer input. R81JAA accepts a Johnson Controls 0 to -2 VDC electronic controller input, or a 0 to +24 VDC input, or a 3-wire 135 to 1000 ohm potentiometer input. When the R81JAA is installed in the M100 Series, an input to terminal X, with ground reference to terminal T1, yields approximately a 6 VDC zero with 4 VDC span. All Series R81B and R81J electronic board kits are designed for use only as operating controls. Where an operating control failure would result in personal injury and/or loss of property, it is the responsibility of the installer to add devices (safety, limit controls) or systems (alarm, supervisory systems) that protect against, or warn of, control failure.. Johnson Controls. Johnson Controls. R81JAA-1.