Banner Engineering CD3RA Amplifier Relay Module

The Banner Engineering CD3RA MAXI-AMP amplifier module is part of the CD Series and provides a SPDT electromechanical relay output plus a SPST NPN transistor switch to drive a load from SP12 Series preamplified remote sensors. It accepts a supply of 105–130 V ac or 12–28 V dc and uses ON/OFF logic (output follows input) with no timing, delivering a relay output rated up to 5 A. The CD3RA interfaces with a modulated photoelectric amplifier within the Maxi-Amp CD system, with the overall range dependent on the connected sensor. Banner lists this model as obsolete and recommends contacting Banner for information about a suitable replacement. As part of MAXI-AMP CD Series, the CD3RA historically served to amplify a sensor signal and switch a relay, with performance dependent on sensor selection and installation.