Mesa 7i96 Output Wiring
- Project_Hopeless
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25 Feb 2020 01:25 - 25 Feb 2020 01:26 #158429
by Project_Hopeless
Mesa 7i96 Output Wiring was created by Project_Hopeless
I need a sanity check on wiring the 7i96 Output. Field power does not come from the board so is this correct?
+24VDC -> Relay -> [Out 1+ /Out 1-] -> 24VDC Common
or
+24VDC -> [Out 1+ /Out 1-] -> Relay -> 24VDC Common
Are these correct, any preference ?
www.mesanet.com/pdf/parallel/7i96man.pdf#page=10
+24VDC -> Relay -> [Out 1+ /Out 1-] -> 24VDC Common
or
+24VDC -> [Out 1+ /Out 1-] -> Relay -> 24VDC Common
Are these correct, any preference ?
www.mesanet.com/pdf/parallel/7i96man.pdf#page=10
Last edit: 25 Feb 2020 01:26 by Project_Hopeless.
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- PCW
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25 Feb 2020 01:38 #158430
by PCW
Replied by PCW on topic Mesa 7i96 Output Wiring
Both are correct.
If you use the second scheme you should definitely fuse the 24V supply
since a short to ground (assuming 24V common is ground)
would likely damage the 7I96 output
Note that you should have flyback diodes across the relay coils
If you use the second scheme you should definitely fuse the 24V supply
since a short to ground (assuming 24V common is ground)
would likely damage the 7I96 output
Note that you should have flyback diodes across the relay coils
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25 Feb 2020 08:19 #158442
by bbsr_5a
Replied by bbsr_5a on topic Mesa 7i96 Output Wiring
modern relay industrial supply most got the diodes inside
and even the industri Rail sockel relais got safty diodes both ways
and even the industri Rail sockel relais got safty diodes both ways
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25 Feb 2020 11:29 #158450
by tommylight
AC relays can not have them anyway you look at it. DC ones rarely have them.
Replied by tommylight on topic Mesa 7i96 Output Wiring
No they do not, over 90% of them do not have them built in.modern relay industrial supply most got the diodes inside
and even the industri Rail sockel relais got safty diodes both ways
AC relays can not have them anyway you look at it. DC ones rarely have them.
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- AgentWD40
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12 Aug 2020 03:46 - 12 Aug 2020 04:32 #177982
by AgentWD40
Replied by AgentWD40 on topic Mesa 7i96 Output Wiring
How exactly should a relay *module* like this one be wired up ? (SAFELY)
www.amazon.com/HiLetgo-Channel-Module-Is...id=1597203703&sr=8-3
On the control side it looks like it has a DC+, DC-, and IN pins.
With an arduino it is very straight forward but with the 7i96 it's a relay firing another relay and has my slightly confused and I'm not following the path for either of OP's schemes. Maybe they're not using a relay board like I've shown?
A very quick sketch would be extremely helpful.
www.amazon.com/HiLetgo-Channel-Module-Is...id=1597203703&sr=8-3
On the control side it looks like it has a DC+, DC-, and IN pins.
With an arduino it is very straight forward but with the 7i96 it's a relay firing another relay and has my slightly confused and I'm not following the path for either of OP's schemes. Maybe they're not using a relay board like I've shown?
A very quick sketch would be extremely helpful.
Last edit: 12 Aug 2020 04:32 by AgentWD40.
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12 Aug 2020 06:13 #177986
by tommylight
Replied by tommylight on topic Mesa 7i96 Output Wiring
Connect gnd and IN to the mesa board, they just need the input to gnd to switch over.
In case it does not work, reverse the gnd and in pins.
In case it does not work, reverse the gnd and in pins.
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12 Aug 2020 13:55 #178034
by AgentWD40
Replied by AgentWD40 on topic Mesa 7i96 Output Wiring
I appreciate the answer but now I'm even more confused...
Using this pic can you connect all the necessary wires that are needed to safely run a relay module of this type?
Using this pic can you connect all the necessary wires that are needed to safely run a relay module of this type?
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12 Aug 2020 14:09 #178036
by PCW
Replied by PCW on topic Mesa 7i96 Output Wiring
Look like it would be wired
+24V --> DC+ 7I96 OUT+
0V --> DC-
7I96 OUT- --> IN
Though a plain relay would be sinpler
+24V --> DC+ 7I96 OUT+
0V --> DC-
7I96 OUT- --> IN
Though a plain relay would be sinpler
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12 Aug 2020 14:24 - 12 Aug 2020 14:25 #178037
by AgentWD40
Replied by AgentWD40 on topic Mesa 7i96 Output Wiring
Like this? Also, can you specify a plain relay you would prefer?
Last edit: 12 Aug 2020 14:25 by AgentWD40.
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12 Aug 2020 15:21 #178039
by PCW
Replied by PCW on topic Mesa 7i96 Output Wiring
I was thinking of simple DIN rail mounted relays but they seem to be more
expensive unless you buy direct from China
expensive unless you buy direct from China
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