Watlow PPC-2000 - Manual (Page 141)

PPC-2000 User’s Guide Chapter 3: Operating with AnaWin 3
Doc.# 30002-00 Rev 2.3 Watlow Anafaze 117
PV Source
Select the input used as the process variable for this channel.
Choose one of the displayed analog inputs. Use the scroll bar in
the pop-up window to view the available inputs.
Range: Not Assigned and all the analog inputs on the Inputs
spreadsheet.
Set Point Source
Select a setting to determine how the set point for the channel
is set. Select User for normal closed-loop control applications.
Select a channel output (Channel # Out) for cascade control.
Select an analog input for ratio control, differential control,
remote set point, or process variable retransmit.
Range: User, Channel 1 Output to Channel 48 Output, and all analog
inputs on the Inputs spreadsheet.
Min Set Point
Enter the minimum value the PPC should accept for the set
point of the channel. This parameter is also used to scale a
cascade channel. (See Cascade Control on page 105).
Range: The range is the same as that of the input type for the
channel.
Max Set Point
Enter the maximum value the PPC should accept for the set
point of the channel. This parameter is also used to scale a
cascade channel. (See Cascade Control on page 105).
Range: The range is the same as that of the input type for the
channel.
Set Point Ratio
For ratio control, differential control, and remote set point
applications, set the ratio by which the analog input value
selected as the Set Point Source is multiplied to calculate the set
point. (See Ratio Control on page 109, Differential Control on
page 112, and Remote Set Point on page 112.)
Range 0.01 to 300.0
Set Point Offset
For ratio control, differential control, and remote set point
applications set the offset which is added to the product of the
analog input value selected as the Set Point Source and the Set
Point Ratio to calculate the set point. (Ratio Control on page 109,
Differential Control on page 112, and Remote Set Point on page
112.)
Range: -32768 to 32767 (Decimal placement depends on the
Input Type selected.) See Table 3.15 on page 130.