1101600
AutoSetPAC User Manual
94
Chapter 4 Using AutoSetPAC in Program Mode
•
Low setpoint percentage
•
Repeatability setpoint percentage
The sample period is the number of strokes during which AutoSetPAC collects tonnage information
for calculating setpoints, using the highest measured load as a reference tonnage. During the sample
period, setpoints are maintained at 120% of the full-scale capacity of the press to provide overload
protection.
NOTICE
AUTOSETPAC SETPOINTS NEVER EXCEED 120%
AutoSetPAC will not create setpoints greater than 120% of the full-scale capacity of the press.
High setpoint percentage is the percentage above the reference tonnage at which AutoSetPAC
establishes high tonnage setpoints. It is calculated using the following formula:
High setpoint = Highest measured load + (highest measured load x high setpoint percentage)
Low setpoint percentage is the percentage below the reference tonnage at which AutoSetPAC
establishes low tonnage setpoints. It is calculated using the following formula:
Low setpoint = Highest measured load - (highest measured load x low setpoint percentage)
Repeatability setpoint percentage is the percentage of the reference tonnage at which AutoSetPAC
establishes repeatability setpoints. It is calculated as follows:
Repeatability setpoint = Highest measured load x repeatability setpoint percentage
AutoSetPAC samples the load at each strain link simultaneously, selecting the highest measured load
at that strain link as the reference tonnage. Tonnage is sampled at two strain links in AutoSetPAC 2-
Channel and at four strain links in AutoSetPAC 4-Channel.
Example
An AutoSetPAC 2-Channel load analyzer is installed on a 100-ton press. The high setpoint
percentage is set to 15%, the low setpoint percentage to 25%, and the repeatability setpoint
percentage to 5%. The sample period is set to 15 strokes.
The highest load measured during the sample period on the left strain link is 38 tons, as shown
in Figure 4-1. Setpoints for this strain link are calculated as follows:
High setpoint left = 38 tons + (38 tons x .15) = 38 + 5.7 = 43.7 tons
Low setpoint left = 38 tons - (38 tons x .25) = 38 - 9.5 = 28.5 tons
Repeatability setpoint left = 38 tons x .05 = 1.9 tons
Содержание AutoSet PAC 120 VAC
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