UB25 LINEAR DC RESISTANCE WELDING CONTROL
990-665 E-1
APPENDIX E
LCD DISPLAY MESSAGES
Introduction
The Power Supply displays three types of messages on the LCD screen to alert the operator of the status
of the Power Supply:
• Alarm
• Out of Limits
• General Status
You may see these messages when setting-up and programming the Power Supply, or when performing
spot welding.
Relay Activation
Alarm and Out Of Limits messages activate the output relays as described in Appendix F, Relay Timing
Diagrams. General Status messages do not activate the output relays.
Clearing Alarm Conditions to Resume Operation
If an alarm condition occurs, you must do the following:
1 Take the Corrective Action shown next to the Alarm message in the list of messages.
2 Clear the Alarm condition on the Power Supply in order to resume operation:
• Press the RUN key on the front panel of the Power Supply.
OR
• Momentarily close the Process Inhibit input on I/O Connector B on the rear panel.
No action is required to resume operation if you see either Out of Limits or General Status messages.
List of Messages
The following pages list LCD display messages in alphabetical order.
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