How to setup communication or exchange data between Allen-Bradley VFD to send Speed, Torque Reference, Run Stop Command, interlock or drive parameter without PLC.
Let say for load sharing application, you want to share the Torque Reference from Master Drive to other Drives.
๐๐ฒ๐ฟ๐ฒ ๐ถ๐ ๐ต๐ผ๐ ๐๐ผ ๐ฑ๐ผ ๐ถ๐ ๐ผ๐ป ๐๐น๐น๐ฒ๐ป-๐๐ฟ๐ฎ๐ฑ๐น๐ฒ๐ ๐ฃ๐ผ๐๐ฒ๐ฟ๐ณ๐น๐ฒ๐ ๐๐ฟ๐ถ๐๐ฒ :
1๏ธโฃ Using Peer to Peer Communication over Ethernet/IP:
โช๏ธUsed to send Run Stop Command, send Reference and parameter from one drive to one or more drives
โช๏ธCan be implemented on Powerflex 755 with embedded Ethernet, Powerflex Drive with 20-750-ENETR or 20-COMM-E Ethernet Communication card ( For 755T need to have 20-750-ENETR card).
โช๏ธMinimum 0.01 second transmission time.
โช๏ธCan send any drive parameter, including Run Stop signal (Logic Command)
โช๏ธIt use datalinks (start with highest numbered datalinks)
๐ฆ๐ฎ๐บ๐ฝ๐น๐ฒ on Load Sharing application. Sending Speed Regulator Output data from one Drive to other Drive on Powerflex 755 Drive.
On First Drive (192.168.1.112) on Port 13 Ethernet/IP set this parameter :
P87-Dls to Peer cfg = 1 (P88-Dls to Peer act will change to 1 after reset)
P89-To Peer period = 0.01s
P91-To Peer enable =custom
P32-Dls to Net16 = Parameter 660 of Powerflex 755 (Speed Regulator Output)
On Second Drive (192.168.1.113) on Port 13 Ethernet/IP, set this parameter :
P76-Dls Fr Peer cfg = 1
P80-Fr Peer Timeout = 0.02s
P81-Fr Peer addr1 = 192
P82-Fr Peer addr2 = 168
P83-Fr Peer addr3 = 1
P84-Fr Peer addr4 = 112
P85-Fr Peer Enable=custom (P86-Fr Peer status will change to ‘waiting/running’ after reset)
P16-Dls from Net16 = Parameter 676 of Powerflex 755 (Trq Ref A Setpoint)
2๏ธโฃ Using T-Link Option Card (20-750-TLINK-XT) over fiber optic :
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โช๏ธCan be implemented on Powerflex 755T Drive ( 755TM, 755TR, 755TL 755TS).
โช๏ธUsed for very tight control of load sharing and Leader-Follower application
โช๏ธTwo parameter is updated at 125 microsecond for up to 4 nodes.
โช๏ธNetwork need at least a Leader drive and up to 3 Follower drives
โช๏ธOnly Torque or Velocity Reference that can be sent from Leader to Follower Drives.
Sample configuration using T-Link option card, can be found on ‘TLink Option Module’ Rockwell user manual , publication 750COM-UM100A-EN-P Page 12
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