PA Industries Magnum Servo Roll Feed SRF-M12/18/24/32/36/48 - Operation Manual - Manual (Page 5)

ULTRA MAGNUM SERVO ROLL FEED 5 /23/2003
5
Each revolution of the servomotor produces 8000 encoder pulses. Every 25 revolutions of the servo motor shaft
produce 1 revolution of the feed rollers. The circumference of the lower roll is approximately 14.781 inches.
When a new feed pitch is entered into the system, the built in computer calculates the correct number of electronic
“pulses” it must receive from the motor mounted encoder in order to rotate the feed rolls the correct distance.
Example: If a feed pitch/length of 14.781 inches is entered into the feeder, this will result in exactly one revolution of
the feed rolls. The motor will accelerate and turn 25 turns. This will produce (25 x 8000 = 200,000) pulses of the
encoder. The feeder will decelerate and stop, when 200,000 pulses are detected. The feeder is now in position. The
result is an accurately positioned strip exactly 14.781 inches from its starting point. This entire process happens in
milliseconds.
2.4 TOOL STORAGE OPERATION
The tool storage feature allows for storing of parameters that are different from tool to tool. It takes just a few seconds
to activate feeding parameters associated with a certain tool number. Maximum 200 tools can be stored. Tools are
organized by a tool numbers which are user definable and can contain of up to 7 digits
Each tool consists of the following parameters:
-Length;
- Batch Count;
- Speed;
- Dwell;
- Accel;
- Decel;
- Feed Cam “On”;
- Feed Cam “Off”;
- Reset Cam “On”;
- Reset Cam “Off”;
- Pilot Release Cam “On”;
- Pilot Release Cam “Off”;
- Aux1. Cam “On”;
- Aux1. Cam “Off”;
- Aux2. Cam “On”;
- Aux2. Cam “Off”;
- Aux3. Cam “On”;
- Aux3. Cam “Off”;
NOTE: Cam settings are available only with PLS version of software.
Consider the tool storage as a part of the servo drive’s NVRAM memory that is dedicated to storing information of all
the existing tools. In order to run a tool, it must be activated. Tool activation is an internal drive procedure of making
a copy of the tool, and placing it in a different memory location. This copy, not the tool in the tool storage, is used to
perform material feeding. “Tool #NNN is active” means only that the feed running parameters are copied from this
tool.
A tool in the tool storage area and its copy, are edited independently, with the difference, that only two of the copy’s
parameters are accessible – Length and Batch Count. These are accessible from the Operator screen. In order to edit
the rest of the parameters of the tool, the tool in tool storage must be edited, and then, reactivated.
NOTE: Deleting an active tool from the tool storage causes deletion of its copy as well.
NOTE: An active tool remains active after power recycling.