498198 IV Smart EC Series OIPM

498198
12 | IV Smart EC / Modbus
8.4 Motor Controls
◊ Each fan contains two EC motors that have their own wire leads landed in the electrical box of the fan.
◊ Each fan type is speed controlled differently.
◊ The IV Smart EC fan is controlled via an analog PWM or 0-10V signal.
◊ The IV Smart EC Modbus is controlled by digital Modbus communications. Each motor must be individually addressed on the job site.
Each motor in the fan (quantity 2 per fan) comes with a default Modbus address of “1” from the factory. Accessories are offered to
enable enhanced communication methods such as BACnet communication for the Modbus fan.
8.5 Field Connections
◊ Check that the data on the nameplate matches the connection data.
◊ Complete the electrical connection according to the connection diagram.
◊ Lay the connection cables in the terminal box in such a way that allows the cover of the terminal box to be closed without resistance.
◊ Screw the lid of the terminal box to 18 Inch-Lbs.
◊ Connect the cable ends in a dry environment.
8.5.1 IV Smart EC Connection Diagram
◊ All connections shall be made using the supplied quick connect lever-action or push-to-connect terminals. The left side of the below
image is the eld wiring side.
Line voltage (L1, L2, Ground):
• Field power connections are to be made in the electrical box
• The grounding terminal is electrically connected to the unit through the DIN rail.
Control voltage (1-3):
• The speed can be adjusted by the input signals labeled ‘control voltage’.
Speed reference connection:
• The fan RPM may be monitored through the speed reference signal labeled ‘TACH OUTPUT’.
◊ TACH OUTPUT Signal: open collector, 1 pulse per revolution, lsink max = 10 mA, SELV.