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Renewable Energy Questions/Discussion => Automation, Controls, Inverters, MPPT, etc => Topic started by: eraser3000 on October 23, 2016, 09:10:36 pm

Title: Electric Heater Controller PID
Post by: eraser3000 on October 23, 2016, 09:10:36 pm

I thought I would share what I use for Controlling everything from lighting to electric wall heaters to electric boiler, garage door openers, wind turbine controller etc.

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Here is a picture of one of my lighting controllers.

Supply voltage - 24 VDC
Has 8 Digital inputs which can take up to supply voltage (24V)
Has 6 Digital Outputs which can handle up to Supply voltage as well.
Has 2 built in 14bit Analog input Channels which are 0-10Volt

CPU processing times:
for bit operations, typ.   0.085 µs; / instruction
for word operations, typ.   1.7 µs; / instruction
for floating point arithmetic, typ.   2.3 µs; / instruction

Digital Output Switching frequency - 100 kHz
Built in Web Server

Builtin PID Controller

and Ethernet programmable with excellent software.

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Here is the basic setup of the PID controller.

And it has a nice tuner built into it.

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Siemens Family Product Page

http://w3.siemens.com/mcms/programmable-logic-controller/en/basic-controller/s7-1200/pages/default.aspx

Siemens Technical Datasheet
http://tinyurl.com/z4j9h3l

Ebay Link to one for 180$
http://tinyurl.com/hmhqw54