Hey,
I have an application that was done using a PF 700 drive on a high speed conveyor (2500 fpm). This conveyor is used to "throw" product through a set of blades to cut the product into french fry like sticks. This drive was set up on DeviceNet using data links (20-Comm-D) to give feedback on amperage and torque. These values were used to determine if the conveyor was getting overloaded with product. This would happen when the blades got dirty and/or plugged up. Once the drive started pulling high amps; the conveyor was stopped so the blades could be cleaned out. Everything worked great.
Now the client has changed out the PF 700 for a PF 40. They did this because they don't want to have to stock another different drive and they already have a ton of the PF 40's around. The problem is that the PF 40 doesn't support data links (22-Comm-D). I can get the data I need (amperage and torque) using explicit messaging, but how fast can I execute the message instructions? I need the data within about 100 ms maximum. Or is there another way to get the data I need without the messaging? I have read the manual on the 22-Comm-D, but it doesn't give any other options.
I have two weeks before the equipment goes "live"; but would like to get this figured out in case I need them to switch back to the PF 700, or figure something else out. Thanks in advance.
Patrick
I have an application that was done using a PF 700 drive on a high speed conveyor (2500 fpm). This conveyor is used to "throw" product through a set of blades to cut the product into french fry like sticks. This drive was set up on DeviceNet using data links (20-Comm-D) to give feedback on amperage and torque. These values were used to determine if the conveyor was getting overloaded with product. This would happen when the blades got dirty and/or plugged up. Once the drive started pulling high amps; the conveyor was stopped so the blades could be cleaned out. Everything worked great.
Now the client has changed out the PF 700 for a PF 40. They did this because they don't want to have to stock another different drive and they already have a ton of the PF 40's around. The problem is that the PF 40 doesn't support data links (22-Comm-D). I can get the data I need (amperage and torque) using explicit messaging, but how fast can I execute the message instructions? I need the data within about 100 ms maximum. Or is there another way to get the data I need without the messaging? I have read the manual on the 22-Comm-D, but it doesn't give any other options.
I have two weeks before the equipment goes "live"; but would like to get this figured out in case I need them to switch back to the PF 700, or figure something else out. Thanks in advance.
Patrick