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Old thread has been locked -- no new posts accepted in this thread
???
09/21/10 14:21
Read: times
#178625
- Good luck!
Responding to: ???'s
previous message
List of 41 messages in thread
Topic
Author
Date
What is the reason for Heater blowing.
01/01/70 00:00
Hof often/how we?
01/01/70 00:00
Some more information...
01/01/70 00:00
continuous rating
01/01/70 00:00
This could be the reason...
01/01/70 00:00
Way too much current...
01/01/70 00:00
Some more information required...
01/01/70 00:00
do you have hysteresis in your control?
01/01/70 00:00
No there is no hysteresis.
01/01/70 00:00
Four pulses?
01/01/70 00:00
The Heaters are failing, electronics is OK.
01/01/70 00:00
Why Pulses?
01/01/70 00:00
I will do just that...
01/01/70 00:00
Processor must know about zero-crossings
01/01/70 00:00
??
01/01/70 00:00
soft start
01/01/70 00:00
Soft Start
01/01/70 00:00
an easy and interesting check
01/01/70 00:00
Soft start, again...
01/01/70 00:00
Yes these heaters need Soft start
01/01/70 00:00
Again: Power? Voltage? Current?
01/01/70 00:00
Avoid driving gate all the way to next zero crossing
01/01/70 00:00
Crest factor/power factor correction
01/01/70 00:00
Phase angle control...
01/01/70 00:00
I agree with you.
01/01/70 00:00
Good luck!
01/01/70 00:00
are all heating coils the same ?
01/01/70 00:00
There You Go
01/01/70 00:00
re the possible need for hysteresis
01/01/70 00:00
Power? Voltage? Current?
01/01/70 00:00
Alternate Heating Control Algorithm
01/01/70 00:00
Some more clarification...
01/01/70 00:00
Voltage - or power? [ed]
01/01/70 00:00
The other controllers
01/01/70 00:00
Thanks All members.
01/01/70 00:00
just suggest..
01/01/70 00:00
Reply to JecksonS Ben
01/01/70 00:00
Good point!
01/01/70 00:00
supposed to
01/01/70 00:00
opto isolated triac
01/01/70 00:00
My solution
01/01/70 00:00
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