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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Panasonic inverter microwave controller as timer
I am trying to use the controller board from a Panasonic
inverter microwave as a timer but am having no luck getting the relay output to work properly. The controller board has a 3 wire connector going to the inverter board. I have been able to determine that one pin outputs 1 Htz pulses (appears it would interface to 5v logic). Another pin appears to be an input but I can't figure out what it wants. With nothing connected to any of the three pins the relay shuts off after 3 seconds regardless of the initial time requested. If I jumper the input pin to the center (common?) pin of the connector it will run for 23 seconds before it aborts. Jumper directly from output to input aborts after 3 seconds. As a simple count down timer with no relay it functions normally. Clearly the inverter board is supposed to send some kind of 'OK' signal to the controller board as a fail safe mechanism. I have not found a schematic online. Has anyone gotten one of these controllers to work as a power timer? thanks, kw ----== Posted via Pronews.Com - Unlimited-Unrestricted-Secure Usenet News==---- http://www.pronews.com The #1 Newsgroup Service in the World! 100,000 Newsgroups ---= - Total Privacy via Encryption =--- |
#2
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Panasonic inverter microwave controller as timer
On Nov 24, 10:09*am, Ken Wright wrote:
I am trying to use the controller board from a Panasonic inverter microwave as a timer but am having no luck getting the relay output to work properly. * The controller board has a 3 wire connector going to the inverter board. *I have been able to determine that one pin outputs 1 Htz pulses (appears it would interface to 5v logic). *Another pin appears to be an input but I can't figure out what it wants. *With nothing connected to any of the three pins the relay shuts off after 3 seconds regardless of the initial time requested. *If I jumper the input pin to the center (common?) pin of the connector it will run for 23 seconds before it aborts. *Jumper directly from output to input aborts after 3 seconds. As a simple count down timer with no relay it functions normally. *Clearly the inverter board is supposed to send some kind of 'OK' signal to the controller board as a fail safe mechanism. *I have not found a schematic online. Has anyone gotten one of these controllers to work as a power timer? thanks, kw ----== Posted via Pronews.Com - Unlimited-Unrestricted-Secure Usenet News==----http://www.pronews.comThe #1 Newsgroup Service in the World! 100,000 Newsgroups ---= - Total Privacy via Encryption =--- The timer is looking for some saftey logic from the power supply I havent really looked at it but I can get you a schematic. Email me. |
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