Rockwell Automation Allen-Bradley LiquiFlo 2.0 - Page 99

Rockwell Automation Publication D2-3518-4 - January 2020 99
Parameter Descriptions Chapter 9
Sets the lower limit of the PI output. This value must be less than the value set in
PI Upper Limit (132).
Sets the upper limit of the PI output. This value must be greater than the value set
in PI Lower Limit (131).
Sets the value used to load into the PI Integrator when PI is not enabled.
The present state of the process PI regulator.
Figure 42 - PI Status (134)
Bit 0 – PI Enabled
• Indicates whether or not the PI loop is enabled.
Bit 1 – PI Hold
• Is set to 1 to indicate when a digital input is configured for PI Hold and is
turned on, or the PI Hold bit is set in PI Control (125).
Bit 2 – PI Reset
• Is set to 1 to indicate when the PI Integrator is being reset to zero.
Bit 3 – PI InLimit
132
PI Upper Limit
Range: -/+Maximum Frequency [0.1 Hz]
Default: +Maximum Freq
Access: 1 Path: Speed Command > Process PI
See also: 124...138
133
PI Preload
Range: -/+Maximum Frequency [0.1 Hz]
Default: 0.0 Hz
Access: 1 Path: Speed Command > Process PI
See also: 124...138
134
PI Status
Range: See Figure 42
Default: Read Only
Access: 1 Path: Speed Command > Process PI
See also: 124...138
0000xxxxxxxxxxxx
0011234567891112131415
1 =Condition True
0=Condition False
x =Reserved
Bit #
PI Enabled
PI Hold
PI Reset
PI InLimit
Nibble 1Nibble 2Nibble 3Nibble 4