AI561 wiring
Hello,
I have a pm554 tp eth, a AI561, a temperature meter which has power supply 24V AC/DC and analog output 4-20mA
and a temperature meter with power supply 230V AC and analog output 4-20mA
I supply the first meter with 24V DC from the same 24v DC PSU that powers pm554 and the AI561. The second meter gets 230V AC.
I want to connect the 4-20mA signal from the first meter to the AI0 of AI561 and the 4-20mA signal from the second meter to AI1 of AI561
I bridge R0 with I0+ and connect it to the (+) of the analog output and then i bridge the (-) of the PSU to the (-) of the analog output and connect it to the I0-
I do the same for the second meter but with the terminals R1,I1+,I1-
Is that correct ? Do i also have to connect the (-) of the PSU to the PE (ground) of my electical panel?
Thank you in advance
I have a pm554 tp eth, a AI561, a temperature meter which has power supply 24V AC/DC and analog output 4-20mA
and a temperature meter with power supply 230V AC and analog output 4-20mA
I supply the first meter with 24V DC from the same 24v DC PSU that powers pm554 and the AI561. The second meter gets 230V AC.
I want to connect the 4-20mA signal from the first meter to the AI0 of AI561 and the 4-20mA signal from the second meter to AI1 of AI561
I bridge R0 with I0+ and connect it to the (+) of the analog output and then i bridge the (-) of the PSU to the (-) of the analog output and connect it to the I0-
I do the same for the second meter but with the terminals R1,I1+,I1-
Is that correct ? Do i also have to connect the (-) of the PSU to the PE (ground) of my electical panel?
Thank you in advance
Asked 5 months ago
Answers
0
Without seeing a drawing, any advice you get from the internet is worth exactly what you paid for it.
We don't know if the 24V AC to meter 1 also powers the 4..20mA loop. I'll take a wild ass guess that there isn't 230V AC on the 4..20mA loop for meter 2, but again there's no way we can tell where the loop power comes from without looking at the drawings which YOU already have.
We don't know if the 24V AC to meter 1 also powers the 4..20mA loop. I'll take a wild ass guess that there isn't 230V AC on the 4..20mA loop for meter 2, but again there's no way we can tell where the loop power comes from without looking at the drawings which YOU already have.
Answered 5 months ago
0
Hi,
Type AI561 in Help -> Search in Codesys and you can find all possible connections - very clearly described.
Left diagram for active sensor (sensor with own power supply). Right diagram for passive sensor (supplied from PLC's 24VDC)
Type AI561 in Help -> Search in Codesys and you can find all possible connections - very clearly described.
Left diagram for active sensor (sensor with own power supply). Right diagram for passive sensor (supplied from PLC's 24VDC)
Source: Codesys help F1
0
First of all, thank you all for the replies
This is the 230V AC one and the other is the same but with 24V AC/DC supply.
I made a test and used the analog sensor active type (current) for wiring both meters
The 230V AC supply one gave me a reading but i had to connect the (-) of the PSU 24V DC to the (-) of the analog output like the wiring diagram suggests. If i only went for
(+) of the 4-20mA output connected to R0 and I0+ and only (-) of the 4-20mA output connected to I0- [without also connecting together the (-) of the 24V DC PSU of the PLC ] then the reading was causing an overflow error and was crazy
For the 24V AC/DC one, i used the same 24V DC psu that powers the PLC. I made the same connection as the 230V AC supply meter and with the (-) of the PSU connected or not connected to the (-) of the 4-20mA output and the I0- of the AI561 the reading was the same.
Do we always have to connect the (-) of the PSU to the (-) of the analog output (active type sensors) and the (-) of the analog input in the PLC ?
Do i also have to ground my (-) of the PSU? In the panel is the same ground for 230V/400V AC circuits?
Thank you in advance
Answered 5 months ago
0
Hi,
Yes, usually you have to connect (-) of your analog input/PLC to (-) of the source signal.
Grounding of the (-) of both above is the other story. Usually you don't have to ground the (-). I don't know why it is grounded on the examples above?
In my practice, 24VDC power supply have to be isolated from the ground. The ground is used for connection of the shields of the signal cables only.
Yes, usually you have to connect (-) of your analog input/PLC to (-) of the source signal.
Grounding of the (-) of both above is the other story. Usually you don't have to ground the (-). I don't know why it is grounded on the examples above?
In my practice, 24VDC power supply have to be isolated from the ground. The ground is used for connection of the shields of the signal cables only.
0
Thank you for the replies.
I made a simple wiring diagram where i connect all the (-) from 24V DC Power Supply, PM554,AI561,analog inputs and the analog outputs of the meters together. I guess they are considered active type sensors according to their wiring diagram right? What do you think?
Thank you in advance.
I made a simple wiring diagram where i connect all the (-) from 24V DC Power Supply, PM554,AI561,analog inputs and the analog outputs of the meters together. I guess they are considered active type sensors according to their wiring diagram right? What do you think?
Thank you in advance.
Answered 4 months ago
by kiriakos Rank: 1334 on 3/13/2020 10:03:37 AM | Like (0) | Report
by "bridge" i mean connect them
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