Unitek Miyachi IP-215A User Manual page 86

APPENDIX E: ALARM MESSAGE LIST
ALARM MESSAGE
MEMORY ERROR!!
OVER TEMPERATURE
OF TRANSFORMER !!
OVER TEMPERATURE
OF TRANSISTOR !!
OVER CURRENT!!
ME-35A FINE SPOT WELDING POWER SUPPLIES
E-2
DESCRIPTION
Memory Trouble. Memory backup
battery is discharged. Program data
may have been lost. TROUBLE output
signal is generated at the I/O connector
when power is turned on (refer to
Appendix B).
Welding Transformer Thermostat is
Open. The welding transformer has
overheated and its protective
thermostat has tripped. The system
cannot start.
Transistor Thermostat is Open. Pow-
er transistors have overheated and the
protective thermostat has tripped. The
system cannot start.
Excessive Current. Power Supply
peak output current exceeded 50 A for
the IP-215A or 200 A for the IP-217A
during the weld cycle.
CORRECTIVE ACTIONS
Error Reset: Press the front panel
RESET key.
Remedies: Check program data after
reset. Restore data if wrong or missing.
Replace the lithium backup battery on
the Power Supply printed circuit board
(refer to Chapter 7).
Error Reset: Close the RESET input
signal at the I/O connector (refer to Ap-
pendix B).
Remedies: Cool the welding
transform-er to reset the thermostat.
Check the transformer cooling system.
Reduce the duty cycle or use a larger
capacity weld-ing transformer.
Error Reset: Close the RESET input
signal at the I/O connector (refer to Ap-
pendix B).
Remedies: Cool the power supply to
reset the thermostat. Reduce the duty
cycle.
Error Reset: Close the RESET input
signal at the I/O connector (refer to Ap-
pendix B).
Remedies: Check for a short circuit
between the welding transformer out-
put terminals or in the welding
transformer output cable.
993-603 REV A: October, 1993