FEC DSP1500 (SAN3) - Manual (Page 130)

enFORCE DSP1500 SAN Unit Operation Manual
(Rev 4) PAGE 7－6
Chapter 7: Maintenance & Inspection
7.2 Basic Operational Tests
Follow Lockout/Tagout and other safety precautions when connecting or
disconnecting cables, wiring, and equipment. When performing the following
inspections, verify that the System is disabled prior to touching any moveable
components.
7.2.1 Load Cell
The system can perform a load cell check before each press cycle, comparing the values from
the load cell (zero and calibration) to the data stored in the system memory. The system is
maintenance free, however it can be manually checked as follows:
• Be sure that the enFORCE is in the READY mode.(powered up and not running with a
STOP signal applied)
• Check that the load display shows 0 when the keyboard-display unit RESET key is being
pressed.
• At the same time as 2 (above), check that the ACCEPT LED is lit.
• Check that the display is showing the full scale load value when the SAN unit CAL key is
being pressed.
• At the same time as 4 (above), check that the ACCEPT LED is lit.
• If any of these checks fail internal limits, an ABNORMAL will be generated and the ABN
LED will light. See Chapter 8 for troubleshooting.
7.2.2 Resolver
The resolver feedback is automatically checked while the press motor is turning.
No manual steps can be taken to manually check the resolver since it is totally enclosed and
there is no access to the motor to manually turn it. However, the resolver position (in pulses) in
relation to the return proximity switch can be checked to verify it is within the acceptable range of
1000 ~ 3000.
• Be sure that the enFORCE is in the READY mode.(powered up and not running with a
STOP signal applied)
• Perform a “Home Position Search” using the attached Programming Display. After the
press has performed this operation, a number will be shown for 1 second. This is the
resolver position.
• If it is out of the 1000 ~ 3000 range, see 7.2.3.2 “Motor Tuning” for steps on how to
adjust.