National Instruments NI 9485

Figure 2. Connecting a Load
NI 9485
+
–
Load
or
AC
CHa
CHb
When the channel is turned on, the terminal connected to the load
drives current or applies voltage to the load. When the channel is
off, the terminal does not drive current or apply voltage to the
load.
Protecting Inductive Loads
When you connect inductive loads to the NI 9485 SSR outputs, a
large counter-electromotive force may occur at switching time as
a result of the energy stored in the inductive load. These flyback
voltages can damage the relay outputs and/or the external power
supply.
NI 9485 Getting Started Guide | © National Instruments | 13