I am doing a project of Induction motor protection through PLC. Now i am in the studying stage of this project. I have 9 analog input and one digital output. Help me about analog input module that how many analog input cards are needed, cost of each card and which PLC is best to achive these analog inputs.
PLC Input Module
- Thread starter umrz180
- Start date
Because l have nothing better to do at the moment, l will get the ball rolling so the guru's can take over a bit later.
You need to supply more info about the type of PLC, you seem open to any PLC, but do you have any software for all the PLC's out there, as some PLC software is more expensive than the PLC.
So what type of analogues Volts or Current?
Now you could have worked this out yourself then looked on ebay for a PLC about pricing, as only a few on this sight are into selling equipment.
You need to supply more info about the type of PLC, you seem open to any PLC, but do you have any software for all the PLC's out there, as some PLC software is more expensive than the PLC.
So what type of analogues Volts or Current?
Now you could have worked this out yourself then looked on ebay for a PLC about pricing, as only a few on this sight are into selling equipment.
Also to add some questions, why would you have 9 analogue inputs, and only a digital output.
I imagine the output is for motor protection (turn motor OFF/ON)going by your post, so what is controlling the motor as you only talk about protection, as if you have analogue inputs, you would normal be doing some sort of speed control/PID unless they are all RTD's.
I imagine the output is for motor protection (turn motor OFF/ON)going by your post, so what is controlling the motor as you only talk about protection, as if you have analogue inputs, you would normal be doing some sort of speed control/PID unless they are all RTD's.
Diameter157
Member
There are other factors to consider:
1) Where will this project be used?
For example if the factory uses all supplier X PLCs and you want to use supplier Y then they will not have any spares or technicians that know how maintain supplier Y PLCs.
Original price of the PLC is nothing compared to the cost of maintaining spares, software and training of technicians.
2) Delivery time
You will probably have a time limit for this project, delivery times can vary from 1 day to 3 months for example.
Another thing, if this is project for use at school, your best bet is probably an arduino mega for €35
1) Where will this project be used?
For example if the factory uses all supplier X PLCs and you want to use supplier Y then they will not have any spares or technicians that know how maintain supplier Y PLCs.
Original price of the PLC is nothing compared to the cost of maintaining spares, software and training of technicians.
2) Delivery time
You will probably have a time limit for this project, delivery times can vary from 1 day to 3 months for example.
Another thing, if this is project for use at school, your best bet is probably an arduino mega for €35
ganutenator
Lifetime Supporting Member
if u just want to pass.
use 8 of the analog inputs for vibration sensors.
Leave the ninth one as spare, quote some contingency b.s.
make it all 4/20ma.
since cost isn't a factor, use allen bradley.
hang out around bars at campus until you run into someone that has the software.
agree to put friend's plc on ebay but keep it instead.
F it, buy me a beer and I'll do it.
use 8 of the analog inputs for vibration sensors.
Leave the ninth one as spare, quote some contingency b.s.
make it all 4/20ma.
since cost isn't a factor, use allen bradley.
hang out around bars at campus until you run into someone that has the software.
agree to put friend's plc on ebay but keep it instead.
F it, buy me a beer and I'll do it.
I am a student and i just start this project. But i don't have a information about which plc manufactures are best and also confused about analog input modules.
As u asked why the 9 analog input.
3 of them are sensors ( temp sensor, ball bearing temp senor of motor and speed sensors)
and 6 of these analog inputs are voltage and current measurements means CTS and PTS because of three phase induction motor 3 CT's and 3 PT's will bw used. so if u have any idea then plz help me.
As u asked why the 9 analog input.
3 of them are sensors ( temp sensor, ball bearing temp senor of motor and speed sensors)
and 6 of these analog inputs are voltage and current measurements means CTS and PTS because of three phase induction motor 3 CT's and 3 PT's will bw used. so if u have any idea then plz help me.
I have about 6 to 7 months to compelete this project but i will deliver some presentations also in these months.
1000$ was my cost estimation but i processed i realize that this project could be expensive.
How much cost of a single analog input Card? and one card contain how many inputs?
1000$ was my cost estimation but i processed i realize that this project could be expensive.
How much cost of a single analog input Card? and one card contain how many inputs?
Diameter157
Member
If you actually have to build this yourself and pay for it yourself then I would go with an arduino for sure https://www.arduino.cc/en/Main/ArduinoBoardMega2560
Biggest problem is that you only have a 5V output and you may need a higher voltage and the programming is in a C type language instead of ladder.
But it really doesn't make sense you would have to totally pay for this yourself. If you were going to go the PLC route, you are looking at hundreds of dollars/euros.
Even if you are going the Arduino route, the speed sensors will make it expensive even though the board is fairly cheap. If you google local suppliers, you can get the Arduino for 4500PKR.
Edit for example for Siemens:
1214 PLC with 2AI (around €300)
AI 4x13bit (so 4 inputs for around €150)
24V power supply (€50)
This is all without tax though
So total price without tax: 400+150+150+50 = €750
And you still need the sensors, wiring, a case to put it in, ...
Biggest problem is that you only have a 5V output and you may need a higher voltage and the programming is in a C type language instead of ladder.
But it really doesn't make sense you would have to totally pay for this yourself. If you were going to go the PLC route, you are looking at hundreds of dollars/euros.
Even if you are going the Arduino route, the speed sensors will make it expensive even though the board is fairly cheap. If you google local suppliers, you can get the Arduino for 4500PKR.
Edit for example for Siemens:
1214 PLC with 2AI (around €300)
AI 4x13bit (so 4 inputs for around €150)
24V power supply (€50)
This is all without tax though
So total price without tax: 400+150+150+50 = €750
And you still need the sensors, wiring, a case to put it in, ...
Last edited:
Yep i would also go for a arduino as it is a lot cheaper,
for the power i would use a special IC or card, as you can not see power factor with simple senors.
for the temperature check what sensor is inside motor, and use a relais to get all three to 1 analog input.
for the power i would use a special IC or card, as you can not see power factor with simple senors.
for the temperature check what sensor is inside motor, and use a relais to get all three to 1 analog input.
Similar Topics
Hello everyone
I got problem during practical.
I am using delta plc model:DVP20EX00R2.
Problem is that when i give 7v dc supply through bridge...
Hi there,
Though I know the Light curtain OSSD should usually be connected to a safety replay or PLC safety input module, I have a question that...
Hi All
I'm trying to add an analog input module to my Click plc to attach some potentiometers to. I can't seem to get any data in my system...
Hi Everone,
I want to know how we Diagnose Digital Input/Output module in S7 300 plC.
Cpu 315-2dp
Input module SM 321-32DIX24v
Output module SM...
I am a student of BS Electrical. I just start a new project ' Protection and Fault detection of 3-phase induction motor using plc'. As PLCs are...