Soft starter problem![]() Benshaw Soft Start TroubleshootingSoft starter problemBenshaw Soft Start Fault Code List
We have an Air Conditioning unit with a Benshaw soft starter. Last week when I turned on the breaker (not the start control) the SCR bypass had a huge arc, which melted the bypass contacts. I had the manufacturer rep. come down to do the troubleshooting and repairs. He megged the motor, ohmed the SCRs and gates and replaced the one bypass that arced. Upon turning on the breaker (not the start control), the soft starter blew again. This time burning out the pulse transformers (all six) on the power circuit board (trigger board). Any info., as to what may be the cause of this problem is greatly appreciated.
Benshaw Soft Start Mx2
The Benshaw Medium Voltage Soft Starter is a microprocessor controlled solid state reduced voltage starter for three phase standard induction motors. Free radius server. It has the most advanced soft starting and soft stopping ramp profiles, motor control, motor protection and metering package features in the indusrty, using next generation Benshaw MX3 control. Benshaw Advanced Controls and Drives has grown to become a world leader in the design, development, and manufacture of motor controls, starters and drives. Benshaw; Benshaw RB2 Soft Starter. Starting modes built-in Jogging 7 and 14% speed 3 user configurable digital inputs 2 fixed inputs for start and bypass confirm 3 user configurable output relays and 1 fixed bypass confirm User configurable analog I/O Programmable burden CT settings Residual ground fault Advanced line / motor metering DC.
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