NI UMI-7774/72 User Guide and Specifications
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Global Stop
The UMI-7774/72 has a single 9-pin D-SUB connector for global stop wiring. This connector includes
the Inhibit All input and the Shutdown input signals. Both signals are optically isolated sinking inputs.
Refer to Figure 26 for the pin locations of the Global Stop connector and to Table 6 for the
corresponding signals for each pin. Refer to Figure 1 to locate the Global Stop connector on the
UMI-7774/72.
Note
Figure 19 shows a simplified connection diagram for the Enable, Fault, and Global Stop
inputs.
Inhibit All
The Inhibit All signal acts as a global inhibit, and when asserted, deactivates the Enable outputs for all
the axes on the UMI-7774/72.
Shutdown
The Shutdown signal is passed through to the motion controller and is typically used to disable the
controller.
Both the Shutdown and Inhibit All inputs are sinking inputs on the UMI-7774/72 and are optically
isolated. You can wire the Shutdown and Inhibit All inputs to a sourcing output device, such as a PNP
sensor, as shown in Figure 24, or to a high-side switch as shown in Figure 28. You can use the isolated
power (V
iso
) and isolated common (C
iso
) signals on the control connector to power the sensor.
To cause current to flow through the input, the voltage applied to the Shutdown and Inhibit All inputs
must be greater than 3.5 V and less than 30 V. Also, the source must be able to provide at least 7.2 mA
to turn on the optical isolator and result in an ON condition. When the applied voltage is below 2 V, the
input results in an OFF condition.
Analog Input
The UMI-7774/72 has a single 9-pin D-SUB connector that provides access to the four analog input
channels on the motion controller. The analog inputs are pass-through signals on the UMI-7774/72.
Refer to Figure 1 to help you locate the analog input connector on the UMI-7774/72. Figure 26 shows
the pin locations for the Analog Input connector. Table 7 shows the corresponding signals for each pin.
Table 6.
Global Stop Connector Pin Assignment
Pin
Signal
Optically Isolated
1
Shutdown
Yes
2
Inhibit All
Yes
3
NC
No
4
NC
No
5
V
iso
(Output)
Yes
6
C
iso
Yes
7
C
iso
Yes
8
C
iso
Yes
9
C
iso
Yes
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