BAPI BA/R49 ETA Line Relay Interface, 9 Output

Features:

• It is often necessary to perform several tasks simultaneously in an HVAC system - for example, turn on an auxiliary supply fan, turn on an exhaust fan, open purge dampers, and close return dampers.
• Rather than tying up four I/O spots on the controller to perform these tasks, the BAPI R49 conserves critical controller space by turning on or off up to nine relays using only one controller output.
• Each output on the R49 module has a polarity switch so that some loads may be turned off while others are turned on as the input changes state.
• Each R49 output supplies a nominal 24 VDC at 120 mA allowing it to control most common relays or small contactors. Each output has a red LED to indicate when power is present. The R49 plugs into a BP2, BP4 or BP8 Backplane. A green LED indicates that power is present to the module.