Setup Messages Chapter Five: Remote RS-232 Operation
94
How To Set the Softstart Rates
The softstart rate controls the rate at which flow moves toward the desired set point. Different
softstart rates can be assigned to each set point as well as to the valve open and valve close
commands. The softstart rate is expressed as a percentage of the valve’s full speed, ranging
from 0.1 to 100%. If it is not necessary to utilize softstart control in your process, leave the
softstart rate at 100% of full speed.
The command [I x value] sets the softstart rate for each set point, where:
x: 1 = Set point A rate
2 = Set point B rate
3 = Set point C rate
4 = Set point D rate
5 = Set point E rate
6 = Analog set point rate
7 = Valve open rate
8 = Valve close rate
value: 0.1 (slowest) to 100% (fastest) of valve full speed
To report the softstart rate for any set point, issue the request:
R xx
where xx: 15 = Set point A rate
16 = Set point B rate
17 = Set point C rate
18 = Set point D rate
19 = Set point E rate
20 = Analog set point rate
21 = Valve open rate
22 = Valve close rate
To report the softstart rate for set point A, enter:
R 15
The controller responds with the message [I x value], where:
x: 1 = Set point A rate
2 = Set point B rate
3 = Set point C rate
4 = Set point D rate
5 = Set point E rate
6 = Analog set point rate
7 = Valve open rate
8 = Valve close rate
value: 0.1 (slowest) to 100% (fastest) of valve full speed
An example response, if the softstart rate for set point A is set to 100%, is:
I 1 100
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