we did contact motion, they have indicated that if the mainline voltage rises above a certain threshold, the braking unit will turn on regardless of the operation of the car. they were not to interested in suggesting a fix for the problem, just that this could occur under certain circumstances. we then looked into something from torqmax, they indicated there were some things that could help with this situation, one being a heat sensor next to the resistor grid that would shut down the braking unit. I like vics idea about the contactor, that would probably solve the situation. as far as the max input volts, id have to check on that, maybe thats a solution also. thanks for the input, i would think that someone out in elevator land has had this happen before, is this the first?