MacGregor Welding Systems has provided innovative solutions for high quality manufacturing for more than 20 years. One of the most noted of these systems is the Resistance Welding Distribution Unit. A distribution unit allows the user to isolate micro welding circuits so that a number of weld heads can be closed in a single operation and the welds accomplished using a single welding power supply. The system controls the switching, timing and voltage sensing (feedback) switching. The profile information allows the spot welding head number to be selected in the profile to ensure when triggered it will select the correct resistance welding head.
In order to maintain the precise control, repeatability and accuracy that MacGregor Welding Systems equipment provides, the system ensures that each weld is controlled and monitored at the weld tips so that any influence from the distribution unit is automatically compensated for. The welds are accomplished in sequence, allowing each weld to select only the appropriate circuit and feedback channel. This means that the accuracy of the weld is the same as if a single head is used and each station is programmed with its own weld schedule. The units can be used with random triggering or used in a controlled environment where a PLC or other control system controls the trigger signals and timing. In random operation, multiple triggers will be automatically sequenced with minimal delay to provide seamless operation.
Features:
Shared capital resources
Intelligent timing and sequencing
Closed loop precision and repeatability
SPC data collection capabilities
Solid State switches provide near instantaneous switching
Distribution units provide three primary advantages to customers who need to make a number of welds in a local area. The first of these is a significant reduction in the cost of the welding equipment required. The cost of a single resistance welding power supply and a four output distribution unit can be as little as 1/3 of the cost of four individual resistance welding power supplies.
Another advantage is the reduction of space required in the assembly system. Using a single resistance spot welding power supply and a compact distribution unit reduces the space required for the system.
The distribution units are available in several model types. The number of outputs, the current level (1,000 Amps, 2,000 Amps or 4,000 Amps) and the switch configuration define the basic types. The units can be configured for common cathode (negative pole switched), common anode (positive pole switched) or double pole (positive and negative poles switched). The use of a double pole ensures that no current can flow through any other common welding electrodes and should be used when more than one welding electrode is set down on the same assembly. Full details on each model of distribution unit available on request, mail us for more information. Selection of the most suitable unit can be reviewed by MacGregor Welding Systems to ensure maximum performance and value.
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