silva.foxx
Member
Hello
I have a project to upgrade a bottle capping machine from relay to programmable logic. The existing control is very dated and safety set-up is based upon latching in off the main drive contactor.
I have seven contactors to control; 5 motors, 1 brake and 1 inverter.
I am using Siemens S7-300 CPU 314, SM321 DI 32x24vdc (2 off ), SM322 DO 32x24vdc and IMO Jaguar VXR.
I have compiled the IO table, the panel is wired and schematics drawn up so ready to rock'n'roll once the program is squirted in.
I'm at the stage of compiling the program. As said, this is upgrading an existing machine with modifications such as incorporating a Schmersal (301 LC) Safety Relay. A text display will flag alarms and faults. I could convert the relay logic in some sense but I'd like to take it from scratch.
I've divided the set-up into a number of sections:
Safety [emergency stop(s), guardswitches]
Overloads
Crash stops [clutch lever-switches]
Height adjustment [reversing contactors]
Drive Inch/Off/Auto
Hopper control
How do I go about starting a flow diagram or a way of compiling the program from my IO, please?
Has anyone an example, please?
I know what I want but would like to know how to do it not-on-the-fly (read 'prepared').
Thanks in advance and kindest regards
silva.foxx
I have a project to upgrade a bottle capping machine from relay to programmable logic. The existing control is very dated and safety set-up is based upon latching in off the main drive contactor.
I have seven contactors to control; 5 motors, 1 brake and 1 inverter.
I am using Siemens S7-300 CPU 314, SM321 DI 32x24vdc (2 off ), SM322 DO 32x24vdc and IMO Jaguar VXR.
I have compiled the IO table, the panel is wired and schematics drawn up so ready to rock'n'roll once the program is squirted in.
I'm at the stage of compiling the program. As said, this is upgrading an existing machine with modifications such as incorporating a Schmersal (301 LC) Safety Relay. A text display will flag alarms and faults. I could convert the relay logic in some sense but I'd like to take it from scratch.
I've divided the set-up into a number of sections:
Safety [emergency stop(s), guardswitches]
Overloads
Crash stops [clutch lever-switches]
Height adjustment [reversing contactors]
Drive Inch/Off/Auto
Hopper control
How do I go about starting a flow diagram or a way of compiling the program from my IO, please?
Has anyone an example, please?
I know what I want but would like to know how to do it not-on-the-fly (read 'prepared').
Thanks in advance and kindest regards
silva.foxx
Last edited: