FEC DSP1500 (SAN3) - Manual (Page 93)

PAGE ６－31
enFORCE Operation Manual
♦ Load Drop Detection (Method 4)
This Load Control press method allows judgment of a load “drop off” or yielding point
[63: Δ f].
Upon start of cycle, the press will operate until it achieves [13: Standard Load]. During
the press cycle, as soon as [18: Crossover Load] is achieved, the press will begin
looking for a yield in press force [63: Δ f]. The press will attempt to detect [63: Δ f]
until [13: Standard Load] has been reached. During the press cycle, checks are
performed for “1
ST Judgment Zone”, 1 ST Rate, 2 ND Rate, Load, Distance, 1 ST Time and
2 ND Time. If any of these values are compromised, the press will stop and return as
programmed. Final Judgment is based on the distance where the decreasing change in
press force equals or exceeds [63: Δ f].
(See corresponding sections for Time, Rate, 1
ST Zone and Speed explanations.)
ƒ [63: Δ f] is a “control” function and is not used for judgment.
ƒ If “1 ST Judgment Zone” is not used, set [15: 1 ST Load] to [10: CAL Load] and
[23: 1 ST Distance] to a minimum of [21: High Distance].
ƒ Review Speed Section explanations and cautions when setting [15: 1 ST Load],
[14: Speed Change Load], [24: Crossover Distance] and [20: Freerun
Distance].
ƒ If 1 ST Rate or 2 ND Rate are not used, set judgment windows wide open; low value
of 0 and maximum high value. Also, if 1 ST H/L Check is not being used, set
[17: Threshold Load] to [10: CAL Load].
Chapter 6: System Operation
Load
Distance
High Load Limit is set to
1.1 x [10] Calibration Load
[11] Low Load Limit
[13] Standard Load
[15] 1 ST Load
[14] Speed Change Load
[17] Threshold Load
[20]
Low
Distance
[21]
High
Distance
[41]
1 ST Time
[42]
2 ND Time
1 ST Rate
[23]
1 ST Distance
1ST Judgment Zone
Final Judgment Zone
[24]
Crossover
Distance
Judgment Load (PS)
[12] High Load Limit
(DS)
[63] Δ f
[18] Crossover Load
Detection
Range
2 ND Rate