CHAPTER 1: DESCRIPTION
PHASEMASTER™ 6 DIRECT ENERGY WELDING CONTROL
1-6
990-083
%CURRENT - Indicates the percentage of the maximum current which will flow during each half-cycle
of the Weld Period. %CURRENT can be set from 20 to 99% in 1% steps. Welding quality will
improve if %CURRENT is set between 65% and 85%.
HEAD TYPE - Indicates whether an Air or Manual Head is connected to the PM6. This determination
is made when power is first applied to the PM6, therefore any change in status after the Circuit Breaker
is switched to ON will not be recognized.
FOOT SWITCH - Indicates whether a 1 or 2-Level Footswitch is connected to the PM6. Footswitches
are used with Air Actuated Weld Heads. If an Air Head is connected but no Footswitch has been
connected, the 2- Level Indicator will light by default. The determination is made when power is first
applied to the PM6, therefore any change in status after the Circuit Breaker is switched to ON will not
be recognized.
FOOT SWITCH WELD ABORT - Indicates the status of this feature. When the Footswitch Weld
Abort indicator is "ON", the operator can abort the welding sequence at any time by releasing the
Footswitch. This Feature is considered by many to be a safety requirement in non-tooled systems.
Footswitch Weld Abort is turned "OFF" by connecting a jumper on the PM6's Input/Output Board.
With a Manual Head this feature is always ON regardless of the position of the jumper.
ALARM - Indicates that either an SCR or MACHINE ALARM condition is present. A 5 second Alarm
Buzzer will sound when an ALARM Indicator lights.
SCR ALARM - Indicates that the PM6's output SCR's are defective. The output SCR's control
the flow of current to the welding transformer. "SEE A1" will appear in the display.
MACHINE ALARM - Indicates an alarm condition referenced by an Alarm Code in the Display
Fields. "SEE" appears in the WELD CYCLE Field, the Alarm Code appears in the HOLD
CYCLE Field. Alarm Codes are as follows:
Machine Alarms will be erased from the display as
soon as the alarm condition is corrected or whenever [PROGRAM] is pressed. (Later model
PM6's also accept
[RUN] to clear an error.)
A2 - Emergency Stop signal was received from the user's equipment.
A3 - The Footswitch remained closed at the end of the weld sequence preventing the PM6
from entering the RUN State.
A4 - The Force Firing Switch in the Weld Head did not close within 10 seconds after the
Footswitch closed.
A5 - SAVE was pressed but the Schedule was not properly stored in Memory.
