Rockwell Automation Publication 1734-UM013N-EN-P - September 2017 103
Configure the Module in a GuardLogix Controller System Chapter 5
4. Configure an input filter.
A single-pole, anti-aliasing filter of 10 Hz is followed by a four-pole digital
filter. Choose from the following available corner frequencies.
• 1 Hz (recommended for Tachometer mode)
• 5 Hz
• 10 Hz
• 50 Hz
For more information on the filter frequencies and step response, see the
technical specifications for the 1734-IE4S module on page 180
or Digital
Input Filter on page 34.
5. Assign High and Low Engineering scaling values for the inputs, if desired.
The valid range for both the High and Low Engineering settings is
-30000…30000, in increments of 1. Scaling lets the module report in
engineering units such as degrees, PSI, CFM, and percent, rather than in
raw counts.
If the channel operation is configured as dual channel equivalent, when
you click Apply, channel 1 is set to the same value as channel 0 and channel
3 is set to the same value as channel 2 if the channel operation is configured
as dual channel equivalent.
6. To indicate how each sensor is powered, set the Sensor Power Supply value
to External or Module.
Configure Safety Analog Input Alarms (Optional)
Set this value to Module to supply power to the sensors connected to
the POINT Guard Analog Input module. This value allows the module
to detect a loss of sensor power.
If you are using a Dual-channel Analog (DCA) safety instruction in your
application program, we recommend that you do not configure these values
on the module. Instead, to facilitate troubleshooting, use the application
program to check for high and low alarm values via the Dual-Channel Analog
Input instruction or other data comparison instructions.
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