FEC DSP1500 (SAN3) - Manual (Page 23)

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enFORCE Operation Manual
2.4 Functions
• Pressing Function
The following press control methods can be selected for the enFORCE System.
1. Load Control
2. Distance Control
3. Specified Point Load Judgment / Load Inflection Detect
4. Time Controlled Press
5. Load Drop Detection
6. Specified Distance Peak Load Detection
7. Load Drop Detection (Point Stop)
8. Distance Control with Load Limit
Load, Distance, Press Rate and Time can be monitored in any configuration.
The system has the capability to perform 1 or 2 step press operations. In a 2 step operation,
SAN units can perform synchronized pressing using the SYNC signal, which controls the
simultaneous synchronization upon start. Thus, the controllers start and stop the presses when
they have reached a previously defined load value or distance. They will start again
simultaneously to reach the final load or final distance.
• Premature Load Detection
If the parameters are set up for “1 ST Step Distance” and “1 ST Step Load”, the press will stop if it
detects a load equal to or higher than “1 ST Step Load” before it reaches “1 ST Step Distance”.
If “FIRST STEP HI/LOW CHECK” is selected, the above check will be performed (HI Check). In
addition, after the press reaches “1
ST Step Distance” it will verify that the load detected is at
least that as specified in “Threshold Load” (LOW Check). If not, the press operation will stop.
• Self-Check Function
If the SELF-CHECK OFF signal is HIGH (inactive or unconnected), the home-position (zero)
voltage level and CAL (full scale) voltage level of the load cell are automatically checked before
the cycle starts.
If the automatic system self-check of the load cell is not required, this function can be disabled
by forcing the SELF-CHECK OFF signal LOW before the cycle starts.
When operating with the signal HIGH, the equipment will correct the zero load level so the
equipment can adjust to external load changes, such as vacuum or gravity. The equipment will
use the previous zero load level if the equipment was started with the signal LOW (Active).
• Press Bypass Function (BYPASS)
When the Bypass input signal is activated through a PLC or when the RUN/BYPASS switch on
the front panel is switched to the Bypass position, the Bypass output signal is activated.
In this condition, the controller will not START. The SYNC signal will be in high impedance
condition to avoid affecting synchronized operations.
If the unit is put into bypass mode when in cycle, it will stop functioning.
• Reject (NG) / Abnormal Condition Display
If a press reject or a system abnormal occurs, the tool will stop and output the appropriate
signal. It will also display the resultant reject data or abnormal number on the front panel.
When a press reject occurs, the tool will return if programmed.
• Tool Type Check Function
The contents of the ID is read in the following conditions
ƒ When a tool is already connected at the time of powering on.
ƒ When the tool is connected and preset data is downloaded from a users console to the
SAN unit.
The tools have an EEPROM in the preamplifier that contains tool data specific for each tool.
The tool type check function reads the information of the tool EEPROM and compares it to the
information contained in the SAN unit; any mismatch is reported as a Tool Type Error Abnormal.
Chapter 2: Specifications