Electro Cam 5000 Series - Manual (Page 6)

1-2 Introduction
Selectable Scale Factor (resolvers only)
The number of increments per revolution (Scale Factor) is
programmed by the user. Standard controls have a
maximum of 1024 increments per revolution and “-H” option
(high resolution) controls have a maximum of 4096
increments per revolution. To make the control operate and
program in degrees, a Scale Factor of 360 is used. In some
applications it is desirable to use a Scale Factor that defines
each increment as a specific distance in engineering units
(ex: 1 inc = .1" of travel).
Output Grouping and Modes of Operation
Outputs can be subdivided into groups and each group
can be associated with an input device. There are five
different modes of operation that can be selected for each
group. For example, some modes allow the group to activate
only when the corresponding input has signaled that product
is present. Glue control is a typical place where outputs
are disabled until product is sensed as being present. For
details, see page A-1.
Standard Product Features (continued)
Optional Product Features
Analog Output, “-A”
Units with this option can output an analog signal that is
linearly proportional to RPM. The analog signal level at
zero RPM can be programmed through the keyboard, as
well as the RPM that corresponds to maximum signal. No
measuring equipment is required for initial setup, and
calibration is not needed. Typical uses are control of glue
pressure as machine speed changes, and speed matching
of other equipment to the machine being controlled.
Outputs Based On Rotation Direction, “-D”
In standard PL
µ
S controllers, outputs will turn ON/OFF
based on resolver position, regardless of which way the
resolver is turning. With the "-D" option, outputs can be
based on resolver rotation direction.
Large Program Memory, “-F”
Depending on the number of outputs ordered, standard
controls can store up to 64 programs consisting of not more
than 1258 output pulses total. Controls with the “-F” option
increase this capacity by storing up to 256 programs
consisting of not more than 4589 output pulses total.
Gray Code Position Output, “-G”
The “-G” option provides eight bits of position information
on the last eight outputs. This “gray code” output can be
connected to a PLC or other electronic control device,
eliminating the need for expensive accessory cards. The
PLC can then make control decisions that do not demand
a fast response, while other PL
µ
S outputs directly control
devices that must operate quickly and consistently.
High Resolution, “-H” (resolvers only)
Controls with this option can divide the resolver shaft
Serial Communication
Serial communication provides an RS-232 and an RS-485
communication port. Using PL
µ
SNET software for IBM
compatible computers, available from Electro Cam Corp.,
the control’s entire program can be saved from the control
to a disk file or loaded from a disk file to the control. The
program can be printed or edited using the computer. It is
also possible to send individual communication commands
to the control, while running, to change settings in the
program. The user must write appropriate software to
communicate at the individual command level.
Expanded Operator Access
This feature gives the operator access to motion detection
settings, offset, active program number, and speed
compensation.
NOTE: Serial Communication and Expanded Operator
Access were "-C" and "-E" options prior to date code
9740.
rotation into as many as 4096 increments. Standard
controls have a maximum of 1024 increments.
Leading/Trailing Edge Speed Comp, “-L”
This option allows the “on” and “off” edges of output pulses
to be speed compensated by different amounts. High speed
gluing is a common application where the “on” and “off”
edges of the output signal have to be compensated by
different amounts.
Phase Mark Registration, “-P”
Phase mark registration allows the PL
µ
S control to
determine if a product appears before or after a
programmed timing window. If mis-registration occurs, the
product’s timing can be adjusted manually, or by a PLC or
similar controller interfaced to the PLuS control.
Caustic Washdown Boot, “-W”
The face of the keyboard is rated NEMA 4X (meets NEMA
1, 4, 4X, and 12). For additional protection against caustic
washdown, grease, oil, dirt, and normal wear, a clear
silicone rubber boot is available that fits over and around
the keyboard. The back of the boot provides a good seal
between the back of the keyboard and the control panel.
The boot is transparent and pliable, allowing the keyboard
to be viewed and operated through it. Controls ordered
with the “-W” option are shipped with the boot fitted over
the keyboard. Boots may also be ordered separately and
installed in the field (#PS-4904-99-001).
Remote Display
A remote display which connects to the RS-485 port is
available for units ordered with both the “-C” and “-E”
options. This allows position and RPM information to be
displayed up to 1000 feet away from the controller.