MTS Series 793 Utility Software - Manual (Page 100)

HSM State “High Bit” Digital Input “On Bit” Digital Input
High HSM Pressure High High
Single input
The following table shows the control logic for systems where both the On Bit and High Bit digital
input resource name assignments are the same.
HSM State Digital Input
HSM Off Low
High HSM Pressure High
Note:
Refer to the controller hardware manual to determine digital input wiring and specifications.
Uninterruptible Power Supplies (UPS)
The Model 493.73 HPU board, Model 494.42 system board, and Model 494.44 system board have
dedicated digital inputs that can monitor a UPS. These inputs monitor normally open UPS Line
Fault and UPS Low Battery contacts on the UPS.
Note:
FlexTest SE, FlexTest 40 (Model 494.41), TestStar IIs, and FlexTest IIm Controllers do not
have dedicated UPS monitoring inputs. With these controllers, you can configure the digital
inputs that are part of general-use DI/O for UPS support.
How to Add an Uninterruptible Power Supply (UPS)
1. Add the UPS interface.
a) Select Controller in the tree view pane.
b) Add the appropriate hardware resource (for example, a Model 493.73 HPU board).
c) Click the Miscellaneous tab.
d) Select 1 for the # of UPS Interfaces.
2. Configure the UPS interface.
a) Double-click the UPS icon to display UPS inputs and outputs:
Description UPS Input/Output
This input changes state when the UPS normally open Line
Fault contacts open to indicate that AC power is lost and that
the UPS is supplying battery power to the system. UPS Line Fault (Digital
Input 1)
86 MTS Series 793 Utility Software
HWI Hardware Settings