LINK Systems OmniLink 5000 - Manual (Page 57)

5.10
the nearest acceptable rpm.
Section 5.2.5 Maximum Strokes/Minute
This parameter also appears in the Configure Speed screen and can also be programmed in that screen. See
Section 5.2.13.1. This parameter is used to scale the analog input of flywheel speed to the R/D board for
variable speed presses. A full scale input (+5 volt on the A/D converter) is considered to be this speed and
all other inputs are scaled accordingly. This parameter is also used in combination with the motion filter to
determine the length of time that loss of motion can exist during the stroke without causing a stop condition.
This value is limited to between 10 and 920 rpm. The resolution of the press control velocity calculation is
1.83 rpm for machines below 460 rpm and 3.66 rpm for machines equal to or greater than 460 rpm. Speed
parameters are rounded to the nearest resolvable number when entered into the press control.
Section 5.2.6 Motion Filter
This parameter defines a limit on the amount of time after clutch engagement that motion can drop below
the minimum strokes/min setting before being considered a stop condition. This “loss of motion” monitor
is intended to detect conditions such as a breakage in the connection from the crankshaft to the resolver and
if motion remains below the minimum limit for more than the programmed time an immediate stop is
generated and the reason for the last stop will display “Motion Stopped”. This value is limited to between
0 and 2, and an entry beyond the limit is rejected. The table below describes the effects of this parameter.
For example, a press with the maximum strokes/minute set at 20 and a motion filter of 000 will generate a
loss of motion time of 3/20=.150 seconds.
Number Time (in Sec) motion can fall below threshold.
--------------------------------------------------------------------------------------------
00
3.0 divided by (maximum strokes/min) (minimum filter)
01 5.0 divided by (maximum strokes/min) (medium filter)
02 7.5 divided by (maximum strokes/min) (maximum filter)
Section 5.2.7 Clutch Engagement Time
This parameter is the maximum length of time allowed after the clutch/brake valve is engaged until motion
becomes greater than the minimum speed threshold. The allowable limit and actual clutch engagement time
are displayed in the press control menu. This value is limited to between 4 and 996 milliseconds, and an entry
beyond the limit is rejected.
Section 5.2.8 Timed Inch Pulse
This parameter is the length of time that the clutch/brake valve is kept engaged in the Timed Inch mode. The
press control will automatically turn the valve off after this time period has elapsed. This value is limited to
between 16 and 500 milliseconds, and an entry beyond the limit is rejected.
Section 5.2.9 Automatic Turn Off
This parameter is the length of time that the main motor can be left on without operating the press and is