Buggies Gone Wild Golf Cart Forum - View Single Post

JohnnieB · 07-26-2014, 06:53 AM

In addition to the questions yurtle posed, is the LED on the controller blinking Red after the cart misbehaves and prior to being reset by turning off the key?

If so, how many blinks.

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A stock PDS motor turning 23" tires and powered by a 36V battery pack, is going to get mighty hot. The controller and solenoid will also run hotter due to the higher Amp flow through them. The question is: How hot is too hot?

The max recommended temperature for a motor with Class-H insulation, when measured at the case surface, is 115°C (239°F)
The controller shuts down at 95°C (203°F) and gives an error code of four Red blinks.
The solenoid will run cooler than the motor and controller since it is heated more by the current flow through the coil rather than the current flow through the contacts. (Voltage drop on the contacts of the 200A and 400A solenoids Scotty sells is only about 80 millivolts per 100A of current passing through through them.)
None of the high current cables or connections should get more than a few degrees above the ambient air temperature.

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If the battery pack is increased to 42V or 48V, the system will run cooler.

07-26-2014, 06:53 AM	#3
JohnnieB Techno-Nerd Join Date: Jun 2011 Location: West Virginia Posts: 19,654	Re: Motor & Solenoid to hot to touch In addition to the questions yurtle posed, is the LED on the controller blinking Red after the cart misbehaves and prior to being reset by turning off the key? If so, how many blinks. --------------------- A stock PDS motor turning 23" tires and powered by a 36V battery pack, is going to get mighty hot. The controller and solenoid will also run hotter due to the higher Amp flow through them. The question is: How hot is too hot? The max recommended temperature for a motor with Class-H insulation, when measured at the case surface, is 115°C (239°F) The controller shuts down at 95°C (203°F) and gives an error code of four Red blinks. The solenoid will run cooler than the motor and controller since it is heated more by the current flow through the coil rather than the current flow through the contacts. (Voltage drop on the contacts of the 200A and 400A solenoids Scotty sells is only about 80 millivolts per 100A of current passing through through them.) None of the high current cables or connections should get more than a few degrees above the ambient air temperature. ------------------ If the battery pack is increased to 42V or 48V, the system will run cooler.