Chapter 3
Connecting the UMI-7774/7772 to Drives and Other Devices
©
National Instruments Corporation
3-25
National Instruments UMI-7774/7772 User Manual
UMI-7774/7772. Figure 3-17 shows the pin locations for the Analog Input
connector. Table 3-7 shows the corresponding signals for each pin.
Note
None of the analog inputs are optically isolated.
Trigger/Breakpoint
The UMI-7774/7772 has a single 15-pin D-SUB connector you can use for
trigger input and breakpoint output wiring. This connector provides access
to four trigger inputs and four breakpoint outputs.
Trigger
The UMI-7774/7772 provides optical isolation on the trigger inputs. You
can use the isolated power output and isolated common on the connector to
power on the field devices or sensors that provide the trigger signals. All
of the trigger inputs on the UMI-7774/7772 are sinking inputs and are
optically isolated. You can wire the trigger input to a sourcing output
device such as a PNP sensor, as shown in Figure 3-16.
Table 3-7.
Analog Input Connector Pin Assignment
Pin
Signal
1
Analog Input 1
2
Analog Input 2
3
Analog Input 3
4
Analog Input 4
5
Analog Reference (Output)
6
Analog Input Ground
7
Analog Input Ground
8
Analog Input Ground
9
Analog Input Ground
