The Allen-Bradley 1771-OWNA module is a digital I/O module for PLC-5 controllers. It has 32 non-selectable normally-open contacts. The 1771-OWNA module uses electromechanical relays. The module is not approved by the UL or CSA standards for use with reactive loads. The 1771-OWNA module has 32 outputs split into 4 groups of 8. The module can be installed in slots A1B to A4B of an Allen-Bradley 1771 chassis. The voltage rating for the module is 24 to 138 Volts AC RMS and 24 to 125 Volts DC. The maximum current output per output is 1 Amp, which derates linearly by 0.333 Amps per degree Celsius at temperatures above 45 degrees Celsius. The maximum current output per module is 12 Amps which derates linearly at 0.4 Amps per degree Celsius for temperatures above 45 degrees Celsius.
