- MX3660 with SainSmart Relay
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Member
Re: MX3660 with SainSmart Relay
I totally misinterpreted the drawing. I really need to take a class on fundamentals of this stuff.
I recently installed a C10 BOB as I needed additional inputs for encoder and some proximity sensors. Perhaps using the outputs on that would be more productive than fighting the MX3660. Or perhaps I just should buy the other solenoids?
I may try wiring as per Maxspongebob’s drawing earlier in the thread. If I could at least get a consistent state on the relay that would be nice. Eventually I will be adding a few pneumatic actuators as well. Getting a drawbar or tool changer stuck in flux would probably be a bad time.
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Member
Re: MX3660 with SainSmart Relay
Here’s a video.
Note how the LED’s lit dimly despite being in an off state on the controller, then when the pin is activated they turn on fully. Also, sorry for the shaky video, I was recording and trying to touch my touchscreen on the controller.
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Member
Re: MX3660 with SainSmart Relay
The SSR switches on/off, though sometimes gets caught in the unknown state, meaning the LED light in this video sort of flickers unpleasantly. I tried to catch it in the unknown state, of course it doesn't do it when the camera is on.
In the video I'm toggling Flood in mach3.
From the first video, note that output 3- on the MX3660 is connected to input 2 on the relay board (output 3+ is not connect to 5v+, only Output 3- is connected to input 2, this is visible at the end of the first video). The input 2 LED is lighting on the relay board despite the Output 3 pins being turned off in Mach3.
I haven't had time yet this evening to try the resistor between the ground and the input. My wife is ill, but once i get my 3 year old to bed I'll try to get out there.
I doubt a ground loop is an issue, I don't have any steppers or accessories connected as I am bench testing, also, my system was dead reliable before. I've added this SSR board, and the additional BOB (nothing is connected to it). But changes being changes, I suppose it's possible.
Last edited by JerryGarcia; 09-10-2019 at 08:01 PM.
Reason: additional info
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Re: MX3660 with SainSmart Relay
Last edited by CL_MotoTech; 09-10-2019 at 09:48 PM.
Reason: in the midst or a rebrand
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Member
Re: MX3660 with SainSmart Relay
I get 0V (off) and 5V (on) across the 1k5 resistor. This solves the dimly lit LED issue when off.
The multiple output issue is persistent.
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Member
Re: MX3660 with SainSmart Relay
Good a small step forward - the 1K resistor shown in the manual must be a link or a low resistance
Most importantly you have to look after your self so your able look after your family
next questions
how have you configured the C10 jumpers ?
how have you connected the C10 BOB to the MX3660 ?
there must be a conflict between the C10 and MX3660
the C10 BOB is unusual in using pin 18 to detect the printer cable is connected
PS
ignore the second question I was thinking of the MX4660's second port
you can still try disconnecting the C10 to see if every thing works when you go back to the original set up
PPS
are you using 2 PC parallel printer ports , a motion controller such as warp 9 's Ethernet Smooth Stepper that emulaters 3 printerports or a uc300eth ?
John
Last edited by john-100; 09-11-2019 at 07:22 AM.
Reason: add PPS
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Member
Re: MX3660 with SainSmart Relay
The C10 is connected to the UC300eth-5lpt.
The behavior of the MX3660 outputs are consistent with the C10 removed or plugged in.
I have not even attempted to configure the C10 jumpers, I've been preoccupied with these MX3660 outputs. I'd like to be able to control a few items before I start worrying about the additional inputs that I needed the C10 for.
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Member
Re: MX3660 with SainSmart Relay
I think the hand writing is on the wall here. I need to buy the Fotek units. Continuing to mess with this relay board simply doesn't make any sense.
I certainly appreciate everybody's contribution here. It's been a real learning experience.
Once I get the new units and some time to tinker I'll update this thread.
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Member
Re: MX3660 with SainSmart Relay
I got the Fotek units connected up. I ended up installing four of them, all running on 5v, all connected to the four outputs on the MX3660.
I can switch them all on and off, but they all have a bit of voltage when off. My LED light flickers a bit when the relay is off, my box fan runs very slowly when the relay is off, both items function as intended when the relay is on. I'm sure I need a a resister from something to something else. My brain isn't functioning too well. My wife has been in the hospital since Monday and I've been juggling work and our three year old and everything else. The half hour in the shop sure felt nice though. I might even manage a trip through the shower tonight.
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Member
Re: MX3660 with SainSmart Relay
Shower is good. I'm sure your wife will appreciate it.
The thing about some solid state relays is that they never turn off completely. They leak a bit, especially the cheap one's from China. You could increase the load current and thus reduce the off state voltage at the output.
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Member
Re: MX3660 with SainSmart Relay
My wife hasn't showered since like Sunday, she's been too sick to get out of bed for the most part. I don't think she noticed my lack of hygiene. She's improving though, she could come home as early as this evening.
The LED light I used to test with is basically on when the relay is off, though it flickers. It's about exactly the same as it was with the relay board before we added the 1.5k resister.
When you say increase load current do you mean just attach something larger to the load on the relay? With pneumatic solenoids and my coolant pump I'm not sure that's an option, not unless I add a incandescent light bulb in there or something.
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Re: MX3660 with SainSmart Relay
Came across this video, same guy that was posted earlier with the tear down on the Fotek unit.
https://www.youtube.com/watch?time_c...&v=tzWz_guJHvY
So yeah, I'll have to test with my pneumatic solenoids to see how they behave. I can plug my coolant pump in and see what it does while I'm at it.
Given the LED's are such low draw I can see how the leakage powers them, the box fan was a bit of surprise.
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Re: MX3660 with SainSmart Relay
Thanks!
The main thing is that I have four distinct and switchable relays now, which is a huge improvement. I'm close to being functional again should I get the leakage worked out.
Any guess on what quantity of resistance I would need to control the leakage should I attempt that?
I can test with the SSR as a shunt this evening as well.
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Member
Re: MX3660 with SainSmart Relay
whats you mains supply voltage ?
120 V AC as in NA
or
230V AC as in Europe ( in my part of the UK my supply is over 240V AC)
with a 240V supply you could try 68K ( 68000 ohms) 1 W
John
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Member
Re: MX3660 with SainSmart Relay
I’m in the US, so 110/120 AC.
Edit: fat fingers, lazy proofing
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Member
Re: MX3660 with SainSmart Relay
for a 120 V AC supply you can use a 15 K (15000 ohm ) 1W resistor to test
for long term use use a 2W resistor
120/15000 = 8 mA
120V x 8 mA = 0.96 W
for 140V supply use a 22 K resistor
140 / 22000 = 0.006 mA
140V x 0.006 mA = 0.89 W
use a 2W resistor
John
- MX3660 with SainSmart Relay
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