Electro Cam 5000 Series - Manual (Page 59)

Mode 3 Operation
Appendix A-8
Details of Mode 3 -
AND Outputs with Input Signal
An output group operating in Mode 3 will have the same
characteristics as a group operating in Mode 0, except that
the corresponding enable input must be on to enable the
outputs in this group (acts like the input is in series with
each output). When the input is on the outputs will be
enabled, but as soon as the input turns off they will be
disabled. When the group position is within an output’s
setpoints, that output would turn on as soon as the input
turned on, and would turn off as soon as the input turned
off. Therefore, if the input changes state during the pulse, it
is possible to only get a partial output pulse. As in Mode 0,
position changes can only be made through FCN 2, and
position information in maintained in the control's permanent
memory.
Use Mode 3 if the group outputs can only be allowed to
cycle when a maintained enable signal is present.
PGM CHN
FCN
1 2 3
4 5 6
7 8 9
0
CLR
CLE
ENT
ON/OFF SET PT
M OT IO N
POWER
CPU
5000 Series
Programmable Limit Switch
0)
1)
2)
3)
4)
5)
Offset
Motion
Detection
Active
Program
Speed
Compensation
DEG/1000 RPM
Timed
Outputs
Program
Enable Code
Additional output groups can be
controlling other machine
functions in different “modes” as
needed
The gluing operation will be aborted
during this empty “flight bar
Enable Sensor
(gluing will NOT
occur when this
sensor is
de-energized)
Glue Head
The gluing operation will be
aborted during the crushed
portion of this box
Resolver monitors conveyor travel
Conveyor
Mode 3 Example Application
How to Program Mode 3 Operation
1. Program FCN 8 and 9 to correctly establish the
output grouping and modes required for this machine
application (insure that Mode 3 is selected for this group).
2. Check that this group has the desired position
relationship to the machine position. Program FCN 2
to adjust it.
3. Program output setpoints to cycle the outputs on and
off at the desired output group positions.
No other programming is required for Mode 3 to operate. If
an output group operating in Mode 3 fails to cycle its outputs,
insure that the input signal is on and wired to the control
correctly. Motion ANDing (FCN 7) can also prevent the
outputs from cycling.
Example Application: Operate a
machine function only while a
related input signal is maintained
In this illustration the glue head will
only be allowed to operate while the
photo eye sees the top edge of a box.
Boxes that are crushed or not
properly erected will cause the glue
function to be aborted when the eye
loses sight of the top edge.
Mode 3 operation eliminates the
need to hard wire photo eyes and
other sensors in series with the
corresponding controller outputs.
Instead, the sensor input is “ANDed”
with the selected output(s) through
Mode 3 programming.