Electro Cam PS-6144 Series - Manual (Page 68)

5-4 Output Grouping & Modes
Mode 2 Operation
Description Outputs in a Mode 2 group are disabled until the
corresponding input terminal is energized. The
outputs are then enabled to turn on at their pro-
grammed setpoints, and the group position im-
mediately resets to the value programmed
through the OFFSET function, Section 3. The
leading edge of a pulse in the corresponding
group channel disables the group’s outputs and
re-arms the input terminal.
Applications This mode is used where products may not be
evenly spaced and the group outputs should
cycle only when a product has been sensed.
Details • Outputs are enabled and the group position
resets at the leading edge of the input terminal
signal, regardless of how long the terminal is
on.
• Once a reset occurs, the input terminal has no
effect until it is de-energized and the leading
edge of a pulse in the corresponding group
channel re-arms the terminal.
• When the position of a group resets, the position of the corresponding group chan-
nel also resets.
• On power-up, outputs are disabled, the input terminal is armed, and the group posi-
tion is the same as the value programmed in SHAFT POSITION, Section 3.
Figure 29—Mode 1 Example Application
Three sections of an adjustable phase converting machine
are controlled by a single PLuS controller and resolver.
Groups 1, 2 and 3 all operate in Mode 1. The position of each
group is reset to the “preset” value when the group’s sensor
detects the registration mark on the shaft for the
corresponding machine section. This keeps the electrical
control signals properly synchronized to the mechanical
devices in each section when phase adjustments are made.
One resolver provides the position information needed for
all sections of the machine, regardless of their phase
relationship.
Mode 1 Programming See Figure 28 for input terminal and group channel assignments.
1. Program OUTPUT GROUPS, Sect. 3, to establish groups and modes.
2. Program the “Preset” value for each Mode 1 group using OFFSET, Section 3.
3. Jog the machine to the point where the group input terminal will energize. Using this
point as a reference, program setpoints into the output channels in the group.
4. Program a pulse in the group channel to re-arm the input terminal.
Mode 1 Operation (Cont’d)