1747-aic

godfrey

Member
Join Date
Apr 2002
Location
Charlotte, NC
Posts
412
Is there a user manual on the 1747-AIC? I have one for the 1761-NET-AIC. In terms of applications, how does the 1747-AIC differ from the 1761-NET-AIC? I need to connect a PanelView 1000, a SLC 5/03, and a SCADA computer together. Can I use either AIC?
 
A 1747-AIC is an Isolated Link Coupler. Ideally, every node on a
DH-485 network would have one(unless you just have a stand-alone SLC). It provides electrical isolation from the port on the SLC and the rest of the network, and also gives a port to plug a PC into, allowing the SLC to retain connection to the network.

A 1761-NET-AIC is a RS-232(DH-485) to DH-485 convertor. It provides a connection point for the standard AB DH-485 network as well as 2
RS-232 ports for connection of devices that are capable of RS-232(DH-485) communications.

To sum it up.......
The 1747-AIC is a drop point for a DH-485 network, that provides electrical isolation.

The 1761-NET-AIC is an RS-232(DH-485) to DH-485 converter.

Each has it's own application. There is a lot more information over at the AB website.



If your PV 1000 and SCADA connection(like a KTX card) are DH-485 then you will probably go with the 1747-AIC's.

If the PV is an RS-232(DH-485) and you dont have a KTX card and want to connect the SCADA through RS-232, then you will probably use the 1761-NET-AIC's. One thing to consider; The 1761-NET-AIC, being a converter and pumping data through RS-232 is going to be slightly slower.

Post with the specifics of what you have: Is the PV RS-232 or
DH-485?, Does the SCADA PC have a KTX card? Is either port of the SLC used, other than what you are discussing here?
 
Thanks for the info. Here's what I know now.
I am designing a panel as per job specs and customer plans. The parts are not purchaced yet. The PV and SLC 5/03 are in my panel. The customer's drawing shows a 1761-NET-AIC with three lines coming out of it. One to the PV, one to the SLC at port 1 and one to the SCADA. Each line is marked DH-485. I don't know by what port or hardware the SCADA will tie in. I will ask them Monday. The drawing also shows port 0 of the SLC going to something called a SCADA PAK.
With this much info, can you tell me more.
Thanks
 
I think I can guess the designer's intent here. Check out page 3-5 of the 1761-NET-AIC User's Manual for a similar (though yours is simpler) diagram.

You'll use just one 1761-NET-AIC. From that device, your cabling will be as follows:

Channel 1 (6-pin Phoenix RS-485)
1761-CBL-AS03 or -AS09 cable to the Channel 1 plug on SLC-5/03 CPU.

Channel 2 (8-pin Mini-DIN RS-232)
1761-CBL-PM02 to RS-232 port on "SCADA computer".

Channel 3 (9-pin DB-9 RS-232)
Straight-through RS-232 cable to DH-485(RS-232) port on PanelView 1000

+24 VDC power to the power screws.

This will give you the minimum of wiring hassle, even though you need to buy two A-B cables.

The PanelView must be one of the units with DH-485 protocol implemented on RS-232 type electrical connections. The part number must end in "9", such as 2711-K10C9 for the color 10" keypad terminal.

This will give you a small 3-node DH-485 network. Traditionally the SLC-5/03 is Node 1, the PanelView is Node 2, and the computer is Node 3.

This leaves the Channel 0 port of the SLC-5/03 open for a different communications protocol, most likely DF1 over a modem of some kind. "SCADA PAK" sounds like Intellution to me, but if it's not your scope of supply just leave the Channel 0 port empty and at default settings.
 

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