Hey guys,
I posted about this a while ago but am coming back to it now. We were donated a conveyor system that was used in an automated PCB soldering station and we are using parts of it as assignments for our automation course. The setup has a conveyor driven by a 3-Phase ¼ HP motor and a control cabinet. The system is controlled by a Siemens S7-1200 1214C CPU. An extension of the project as a second assignment will be a second conveyor that is connected to one end, driven by a second motor (same size). It will be controlled via the same CPU through a distributed I/O profinet interface module. A co-worker of mine is working on building the control cabinet and we have most of the parts laid out, but neither of us nor our interns who are also participating are totally versed in industrial electronics (I’m a mech E, two of the other guys are mechatronics). The components and wiring we have laid out works, but I wanted to ask the experts (that’s you guys) if there are any extra components needed or if there is anything we have laid out that we don’t necessarily need, and if they need to be in a specific order, etc. for this to be a “realistic” setup. The parts we have are not all necessarily sized exactly correctly, most were spare parts we have laying around and seem to be working for the application. There are a number of inductive sensors on each conveyor, as well as a light barrier, a 3-Lamp (RYG) post with Siren, and a single phase 230V fan. The programming will be relatively simple.
The following components are planned to be included in the first control cabinet:
1) 3x ABB S261 B10 Circuit Breakers, one for each phase.
2) Terminal Blocks for 3-Phase Distribution
3) 2x Mechanically Interlocked Contactors, Fuji Electric SC-E02/G
4) 1x Siemens Sirius Motor Protection Device 3RV1011-1FA15 (Not Sure if necessary)
5) 5A PS307 Siemens Power Supply
6) Simatic S7-1214C DC/DC/DC CPU
7) 2x Siemens Sirius 24V Contactors 3RH1122-1BB40 (1 for E-Stop, and one for Single Phase 230V Fan Motor)
8) +24V and 0V Terminal Blocks
9) Terminal Blocks for Input/Outputs to PLC
10) Main Power Switch
The motors have the following nameplate specs:
50Hz 0.18kW, Delta/Wye 230/400V 1.2A/0.7A (We’re in Europe)
They are not being controlled by any variable frequency drives, just straight 3-Phase in, no starters either. We are also doing our best to keep the 230V wires separate from 24V in the cabinet to avoid interference.
The second control cabinet will take 3-Phase out from the distribution block of the first cabinet. In the second cabinet there are a few solenoid valves as well, controlling pneumatic stoppers on the conveyors.
So after that long winded description, I am posting a pic of what we were sorta envisioning the cabinet to look like. The size of the cabinet will be 380x600mm, if that matters. I would really really appreciate if you guys could give me your opinions on anything we are missing hardware-wise, or anything we else should consider (wire-routing, size, etc.) while building this.
BTW I could only find a German datasheet for the Sirius Motor Protection Device and even after reading it, I am still not certain what it actually does (I think it is a type of overcurrent device?) Is this necessary? Or should we have a residual current device in there instead? Or additionally?
Thanks so much for any input!
I posted about this a while ago but am coming back to it now. We were donated a conveyor system that was used in an automated PCB soldering station and we are using parts of it as assignments for our automation course. The setup has a conveyor driven by a 3-Phase ¼ HP motor and a control cabinet. The system is controlled by a Siemens S7-1200 1214C CPU. An extension of the project as a second assignment will be a second conveyor that is connected to one end, driven by a second motor (same size). It will be controlled via the same CPU through a distributed I/O profinet interface module. A co-worker of mine is working on building the control cabinet and we have most of the parts laid out, but neither of us nor our interns who are also participating are totally versed in industrial electronics (I’m a mech E, two of the other guys are mechatronics). The components and wiring we have laid out works, but I wanted to ask the experts (that’s you guys) if there are any extra components needed or if there is anything we have laid out that we don’t necessarily need, and if they need to be in a specific order, etc. for this to be a “realistic” setup. The parts we have are not all necessarily sized exactly correctly, most were spare parts we have laying around and seem to be working for the application. There are a number of inductive sensors on each conveyor, as well as a light barrier, a 3-Lamp (RYG) post with Siren, and a single phase 230V fan. The programming will be relatively simple.
The following components are planned to be included in the first control cabinet:
1) 3x ABB S261 B10 Circuit Breakers, one for each phase.
2) Terminal Blocks for 3-Phase Distribution
3) 2x Mechanically Interlocked Contactors, Fuji Electric SC-E02/G
4) 1x Siemens Sirius Motor Protection Device 3RV1011-1FA15 (Not Sure if necessary)
5) 5A PS307 Siemens Power Supply
6) Simatic S7-1214C DC/DC/DC CPU
7) 2x Siemens Sirius 24V Contactors 3RH1122-1BB40 (1 for E-Stop, and one for Single Phase 230V Fan Motor)
8) +24V and 0V Terminal Blocks
9) Terminal Blocks for Input/Outputs to PLC
10) Main Power Switch
The motors have the following nameplate specs:
50Hz 0.18kW, Delta/Wye 230/400V 1.2A/0.7A (We’re in Europe)
They are not being controlled by any variable frequency drives, just straight 3-Phase in, no starters either. We are also doing our best to keep the 230V wires separate from 24V in the cabinet to avoid interference.
The second control cabinet will take 3-Phase out from the distribution block of the first cabinet. In the second cabinet there are a few solenoid valves as well, controlling pneumatic stoppers on the conveyors.
So after that long winded description, I am posting a pic of what we were sorta envisioning the cabinet to look like. The size of the cabinet will be 380x600mm, if that matters. I would really really appreciate if you guys could give me your opinions on anything we are missing hardware-wise, or anything we else should consider (wire-routing, size, etc.) while building this.
BTW I could only find a German datasheet for the Sirius Motor Protection Device and even after reading it, I am still not certain what it actually does (I think it is a type of overcurrent device?) Is this necessary? Or should we have a residual current device in there instead? Or additionally?
Thanks so much for any input!