Allen Bradley module selection.

Hello to everyone.

I’m having difficulty in selecting the modules for 80 DI, 80 DO, 10 AI, 10AO system. As I am new to the field, I have selected the below table.
Please help me in rectifying the error I made and if I have missed anything please mention it.

1. 1764-24AWA Micrologix 1500,
12 Digital Input and 12 Digital Output[FONT=&quot] - 1Pc[/FONT]

2. 1769-IA16 Digital Input Module 16 Digital Input[FONT=&quot] - 4Pc’s[/FONT]

3. 1769-OF8V Analog Output Module 8 Analog Output[FONT=&quot] - 2Pc’s[/FONT] 1761-NET-ENIW Ethernet Module[FONT=&quot] - 1Pc[/FONT]

4. 1769-IF8 Analog Input Module, 8 Analog Input[FONT=&quot] - 2 Pc’s[/FONT]

5. 1769-OA8 Digital Output Module, 8 Digital Output[FONT=&quot] - 8 Pc’s[/FONT]

6. 1764-LRP Processor - [FONT=&quot]1 Pc[/FONT]

7. 1764-MM1, MEMORY MODULE[FONT=&quot] - 1 Pc[/FONT]

8. 1764-ECR, END CAP[FONT=&quot] - 1 Pc[/FONT]

9. 1769-CLR1, EXPANSION CABLE[FONT=&quot] - 1 Pc[/FONT]

10.1769-PA4, POWER SUPPLY[FONT=&quot] - 1 Pc[/FONT]


Please guide me to select the software version, communication cable required for programming and the if the expansion modules required any I/O connection hardware.

As you are from India where I think your supply voltages are around 230 volts, the use of 1769 IA and 1769 OA modules rated at 120 volt may be an issue.
I am not sure that a 1769 IM or 1769 OM modules are made for the 1769 series of modules without reading the literature.
A quick skim shows that a 1769 IM for 240 volts only does 12 inputs.
also shows that no OM modules are made but that an 1769 OA may go out to 240 volts

Its my though that most people tend to use the 1769 IQ modules with 24 volt DC inputs and the 1769 OB series with 24 volt DC outputs or the 1769 OW relay output to drive the output with the voltage of choice.

With the number of cards involved you may find you have to have more than 1 of 1769 PA4 power supplies possibly up to 4 of them.

Look at this link for info about your module choices.
http://literature.rockwellautomatio...0014&FamilyId=0104&passedLangVal=EN - English

Thanks Gil47,

Now I am working in Saudi Arabia, and my project contains only 120V input and needs 120V output, If we use 24V then it gets more complicated to fix all the relays in the panel. And I need to know weather my selection of modules is correct or needed any other accessories that I left or missed.

Again thanks for the reply.

You will definatly need more power supplies. Easy way to figure out how many power supplies you will need is to create a project. When you add your cards to the project you can check power and see how many you will need. My bet without looking is at least 2. Also when you put it together get you may also have a restriction on where you can put your analog. It has been awhile since I built an ML1500 but I am pretty sure you will need an expansion cable per extra power supply.

Dear Clay B.,

No need for extra power supply. 1 is sufficient as base unit will support 8 i/o modules and in another bank only one power supply is needed to support 8 modules.