Instruction Manual

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INSTRUCTION MANUAL • MODEL FM POWER SUPPLY 17
BASIC MODES OF OPERATION
The FM power supply’s built-in microprocesor allows the use of either time-
based or energy-based cycles in four basic modes, as follows:
1. Time-based cycle with time delay triggering or pre-triggering.
2. Time-based cycle with variable force triggering.
3. Constant energy-based cycle with time delay triggering or pre-triggering.
4. Constant energy-based cycle with variable force triggering.
TIME-BASED MODES
In a Time-Based Cycle with Time Delay Triggering, the Weld and Hold
timers are actuated following the termination of a pre-determined delay
period. This delay period is initiated when the horn contacts the part to be
welded.
In a Time-Based Cycle with Variable Force Triggering, the Weld and Hold
Timers are actuated after a pre-determined coupling force is exerted on the
components.
For both of these time-based modes of operation, upper and lower tolerance
limits in energy (Ws) can be adjusted.
ENERGY-BASED MODES
In a Constant Energy-Based Cycle with Time Delay Triggering, the weld
cycle follows the termination of a pre-determined delay period.The weld cycle
continues until a pre-selected amount of energy in Watt seconds (Ws) is
delivered to the components. The duration of the weld cycle may vary, but the
energy delivered is constant.
In a Constant Energy-Based Cycle with Variable Force Triggering, the
Weld cycle is initiated after a pre-selected Trigger Force is reached. Once
again, the duration of the weld cycle is dependent upon the pre-selected
amount of energy delivered to the components.
In the case of energy-based modes of operation, the upper and lower
tolerance limits are adjustable in time (seconds).