Note: This is a work in progress. I will be updating the thread over the next couple of weeks.
The REX-C100 is the cheapest and most available PIDs on eBay; often listed by various sellers in China. Its bargain-basement nature makes it alluring. Unfortunately, it's also a bit of a bag of sh*te, and the version that is most often available on eBay doesn't really operate in the way you really want it to for various homebrew applications.
All is not lost (I hope), though; there are various hacks and fixes you can implement which will make the REX-C100 operate in the ways that we want it to, and in this thread, I'm going to compile some of the advice I've found on the interwebs, and some of the bodges I've implemented myself in order to make this bargain buy a more seriously useful investment.
The guidance here is based on PIDs with the serial REX-C100FK002-M-AN, which is the one which seems to come up most frequently.
Credit given to the following for advice: This Site
Using a PT100 Probe
By default, this model uses a K-Type Probe. These are fine and plentifully available, but they are sluggish and imprecise. PT100s are much better, and around the same price, so why wouldn't we use them? Because the REX-C100 doesn't recognise them ... or does it ... the steps below allow you to override the default settings and use PT100s instead...
1. Power up your PID
2. Hold down SET for about five seconds, to activate parameter setting mode
3. Repeatedly press SET until you get to a parameter entitled 'LCK'
4. Use the arrow keys to set this parameter to 1000
5. Hold down SET and the LEFT ARROW for about five seconds. You will enter a mode called 'Cod'. Something about fish, I'm sure. If this doesn't work, try repeating stages 1 to 4, but use 0100 as the unlock parameter instead.
6. Ensure that this is set to 0000.
7. Press SET once, and you should see SL1. Change this value to 1000 - this will tell the PID that you want to use a PT100 (if this doesn't work, try 1100).
8. Press SET until you get back to the 'Cod' screen.
9. Set the parameter for Cod to 0001
10. Press SET; you will see 'SLH' - set the top threshold of your sensor (mine is 400)
11. Press SET; you will see 'SLL' - set the lower threshold of your sensor (mine is 0)
12. Press SET; you will see'PGDP' - set the number of decimal places you need in your reading (mine is set to 0001).
13. Turn off your PID, and wire up your PT100 (mine has blue wires to 8 and 10, and red to 9.
14. Turn on your PID - it should now be working with the PT100 sensor.
Driving an External Solid State Relay
Text here
MORE COMING SOON...
The REX-C100 is the cheapest and most available PIDs on eBay; often listed by various sellers in China. Its bargain-basement nature makes it alluring. Unfortunately, it's also a bit of a bag of sh*te, and the version that is most often available on eBay doesn't really operate in the way you really want it to for various homebrew applications.
All is not lost (I hope), though; there are various hacks and fixes you can implement which will make the REX-C100 operate in the ways that we want it to, and in this thread, I'm going to compile some of the advice I've found on the interwebs, and some of the bodges I've implemented myself in order to make this bargain buy a more seriously useful investment.
The guidance here is based on PIDs with the serial REX-C100FK002-M-AN, which is the one which seems to come up most frequently.
Credit given to the following for advice: This Site
Using a PT100 Probe
By default, this model uses a K-Type Probe. These are fine and plentifully available, but they are sluggish and imprecise. PT100s are much better, and around the same price, so why wouldn't we use them? Because the REX-C100 doesn't recognise them ... or does it ... the steps below allow you to override the default settings and use PT100s instead...
1. Power up your PID
2. Hold down SET for about five seconds, to activate parameter setting mode
3. Repeatedly press SET until you get to a parameter entitled 'LCK'
4. Use the arrow keys to set this parameter to 1000
5. Hold down SET and the LEFT ARROW for about five seconds. You will enter a mode called 'Cod'. Something about fish, I'm sure. If this doesn't work, try repeating stages 1 to 4, but use 0100 as the unlock parameter instead.
6. Ensure that this is set to 0000.
7. Press SET once, and you should see SL1. Change this value to 1000 - this will tell the PID that you want to use a PT100 (if this doesn't work, try 1100).
8. Press SET until you get back to the 'Cod' screen.
9. Set the parameter for Cod to 0001
10. Press SET; you will see 'SLH' - set the top threshold of your sensor (mine is 400)
11. Press SET; you will see 'SLL' - set the lower threshold of your sensor (mine is 0)
12. Press SET; you will see'PGDP' - set the number of decimal places you need in your reading (mine is set to 0001).
13. Turn off your PID, and wire up your PT100 (mine has blue wires to 8 and 10, and red to 9.
14. Turn on your PID - it should now be working with the PT100 sensor.
Driving an External Solid State Relay
Text here
MORE COMING SOON...
