Application and Operation
6.9 User IO
Product User Manual
Operating Instructions, Version AE 12/2009, A5E01454341C
131
6.9 User IO
The VFD provides terminal strips as required for end-user connection of isolated analog and
digital input/output signals to the drive. Specific I/O implementation is customized for each
drive where the end user must refer to drawings provided with the drive. The NXG control
interfaces each of these IO points via either built-in or expansion IO modules. The built-in IO
is dedicated to IO points critical to drive operation. The expansion IO connections, as
required, are intended for system IO that is for typical drive operation or non-critical for
protection.
The system includes provisions for the following types of IO where specific configuration is
as shown with the drive’s drawing set. Note that the SOP determines the routing of each of
these IO points, while the NXG Control provides a means to define the type and scaling of
the analog signals.
● Analog Inputs/Outputs
– 0-20 mA
– 4-20 mA
– 0±10 V
● Digital Inputs - low side switching
– 24 VDC
– 120 VAC
● Digital (Relay) outputs
– Normally open or normally closed contacts available
– Refer to system drawings for contact ratings
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