Configurable Output Behaviors - Allen-Bradley 1756-CFM User Manual

Chapter 3 Configurable Flowmeter Module Features and Operational Modes
Configurable Output
Behaviors
52
Firmware revision 2.4 enables you to configure the 1756-CFM module outputs
to turn on or off at specified frequency counts.
Three types of behaviors, listed in the Frequency Values and Resulting
Behaviors table, can be configured with the use of firmware revision 2.4. Use
this table as a reference when determining on/off frequency values later in the
configuration procedure.
Table 5 - On/Off Frequency Behaviors
Frequency Value Behavior
Typical behavior when firmware revision 1.x is used. If the C.OutputSetup[X].TriggerOn value
FreqOn = 0.0
is 1, a frequency count corresponding to the TriggerOn frequency activates the
FreqOff = 0.0
Ch[X]Overspeed Alarm, which latches and requires additional programming to unlatch.
The specified channel turns off when the frequency count is at or above the specified FreqOff
value. The specified channel turns on when the frequency count is at or above the FreqOn
value. For example:
FreqOff greater than
FreqOn
The specified channel turns on when the frequency count is at or above the specified FreqOn
value. The specified channel turns off when the frequency count is at or below the specified
FreqOff value. For example:
FreqOn greater than
FreqOff
Rockwell Automation Publication 1756-UM010C-EN-P - June 2021
FreqOff = 60
FreqOn = 20
= On
60
20
Time
FreqOn = 60
FreqOff = 20
= On
60
20
Time