GS Series Drives Frequently Asked Questions
GS Series Drives Frequently Asked Questions
| Question | Is there a good way to do a master/follower with the VFDs? |
| Answer | Master/follower is a combination of AC drives and motors to get the follower motor to have a proportional speed of the master motor. The GS2 and GS3 VFD's have an analog output 0-10 Volt for frequency. This can be used for outputting an approximate speed control signal. Error can be from 1% to 5 %, depending on the speed percentage; at lower speeds, the error is bigger. You may offset the input frequency of the follower using the parameters P4-01 to 4-03 Just connect AO of the master into the analog input for frequency set point on the follower with a wire. Connect the ACM terminals from the master to the follower. Program the analog output for frequency and the analog input for 0 10 Volt (P4-00 as 2) If you want higher precision, consider the use of Durapulse drives with encoder feedback. This will reduce the error to less than 0.5%. In either case, this is not electronic gearing. |
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This item was last updated on 07-28-2009
Document ID: 1076
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