FEC DSP1500 (SAN3) - Manual (Page 30)

enFORCE SAN Unit Operation Manual
PAGE 6 - 30
Chapter 6: System Operation
♦ Load Drop Detection (Method 4)
This Load Control press method allows judgment of a load “drop off” or yielding point
[63: Load Change].
Upon start of cycle, the press will operate until it achieves [13: Target Load]. During
the press cycle, as soon as [18: Detection Start Load] is achieved, the press will
begin looking for a yield in press force [63: Load Change]. The press will attempt to
detect [63: Load Change] until [13: Target Load] has been reached. During the press
cycle, checks are performed for “Interference Check” / “Part Check”, Load and
Distance. If any of these values are compromised, the press will stop and return as
programmed.
Final Judgment is based on the distance of the peak point (DS/PS)
where the decreasing change in press force equals or exceeds [63: Load Change].
(See corresponding sections for Interference Check and Part Check explanations.)
ƒ [63: Load Change] is a “control” function and is not used for judgment.
ƒ If “Interference Check” or “Part Check” are not used, set [15: Interference Check
Load / Part Check Load High] and [17: Part Check Load Low] to [10: CAL
Load] and [23: Interference Check Distance / Part Check Distance] to a
minimum of [21: Distance High Limit].
ƒ Review Speed Section explanations and cautions when setting [15: Interference
Check Load / Part Check Load High], [14: Press Speed Start Load], [24: Press
Speed Start Distance] and [20: Approach Distance].
Load
Distance
Max. Load Limit is set to
1.1 x [10] Calibration Load
[11] Load Low Limit
[13] Target Load
[15] Part Check Load High
(Interference Check Load)
[17] Part Check Load Low
[20]
Distance
Low Limit
[21]
Final
Distance Limit
[23]
Part Check Distance
(Interference Check Distance)
Part Check - High
(Interference Zone)
Final Judgment Zone
[24]
Distance
High Limit
Judgment Load (PS)
[12] Load High Limit
(DS)
[63] Load Change
[18] Detection Start Load
Detection
Range
Part Check - Low