7i74's connecting to external 5V
27 Aug 2016 09:46 - 27 Aug 2016 17:26 #79537
by terkaa
7i74's connecting to external 5V was created by terkaa
I will be connecting 3 SSI encoders 250mA max to 7i74 + 3 sserial cards 40mA each. Total comes to 870mA. And at some point a 4th SSI encoder will be added so it goes over 1A. That is why I would like to use external 5V power supply for both 7i74 cards I have. So procedure is? :
1. Swap position of W1 and W2 jumpers on 5i25
2. Swap positions of W1 jumpers on 7i74 cards.
3. Connect 5V to TB1 on 7i74's
Would this be good choice for PS www.digikey.com/product-detail/en/tdk-la.../285-1232-ND/1631413
Tero K.
1. Swap position of W1 and W2 jumpers on 5i25
2. Swap positions of W1 jumpers on 7i74 cards.
3. Connect 5V to TB1 on 7i74's
Would this be good choice for PS www.digikey.com/product-detail/en/tdk-la.../285-1232-ND/1631413
Tero K.
Last edit: 27 Aug 2016 17:26 by terkaa.
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05 Sep 2016 02:04 #80036
by tommylight
Replied by tommylight on topic 7i74's connecting to external 5V
I do not know about MESA hardware and jumpers on them, but that power supply should be sufficient. And it is DIN rail mount, i like rail mounts a lot.
You can also use a phone charger for that, but not cheap chinese ones, they are messed up. Most of them are capable of 5V/1A and newer ones 5V/2A, but also beware of the newest ones for fast charging, they can go up to 8 or 9V, so avoid them.
You can also use a phone charger for that, but not cheap chinese ones, they are messed up. Most of them are capable of 5V/1A and newer ones 5V/2A, but also beware of the newest ones for fast charging, they can go up to 8 or 9V, so avoid them.
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09 Sep 2016 22:32 #80265
by BigJohnT
Replied by BigJohnT on topic 7i74's connecting to external 5V
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10 Sep 2016 11:47 #80292
by terkaa
Replied by terkaa on topic 7i74's connecting to external 5V
I am still waiting for someone to confirm that I have correct procedure before moving on 
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10 Sep 2016 14:19 #80295
by PCW
Replied by PCW on topic 7i74's connecting to external 5V
Yes that's correct
jumper both 7I74s for ext power (W1 down )
jumper 5i25 for no cable power (W1 and W2 down)
supply 5V power to both 7I74 TB1's
jumper both 7I74s for ext power (W1 down )
jumper 5i25 for no cable power (W1 and W2 down)
supply 5V power to both 7I74 TB1's
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10 Sep 2016 14:26 #80296
by terkaa
Replied by terkaa on topic 7i74's connecting to external 5V
Thank you. I will do this next week. I have another PC now with 2.8 installed so I can test it also.
Tero
Tero
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20 Sep 2016 07:58 #80657
by terkaa
Replied by terkaa on topic 7i74's connecting to external 5V
On TB1 which is PIN1 left or right side?
Tero
Tero
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20 Sep 2016 13:45 #80671
by PCW
Replied by PCW on topic 7i74's connecting to external 5V
With the board right side up (TB1 up) pin 1 is on the right (marked +5)
You can also tell pin 1 by looking at the back of the board (it has a square pad)
You can also tell pin 1 by looking at the back of the board (it has a square pad)
The following user(s) said Thank You: terkaa
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