This article is intended to provide an overview of replacement VFD drive options for the 650 family. It is advised to treat this as a redesign of the application to ensure all functionalities are met with a replacement product. If you have not selected drives for an application in the past, your local Parker Distributor/Integrator can also assist with choosing a modern product. Contact Parker EMN Customer Service with your zipcode for a nearby representative.
All information on the AC650 series can be found on its "Legacy Product Page" found here: AC650Series
All variants of the 650 drive (including V, G, S) have been obsoleted as of November 9th, 2016. Although similar replacement options are available, none are fully drop-in and reprogramming is required.
You may have a European AC650 part number (ie: 650-XXYYYYZZ-AAA…). For deciphering a European part number (to assist in crossing over to a modern North American product) please see the below document. It can act as a quick reference for your 650’s power, amperage, and voltage ratings; as well identifying additional options your original 650 may have had.
- AC10 Product Page Quicklink
- 690+ Product Page Quicklink
- 890 Product Page Quicklink
- AC30 Product Page Quicklink
The likely candidate for replacing the AC650 will be the AC10. Benefits over the AC650 are called out in the bulletin provided above. They include, but are not limited to:
- Wider voltage tolerance: 380V – 480V +10-15%
- Improved sensorless vector capability over what the AC650G and AC650V were capable of
- Expanded size range: 250 HP versus 125 HP
- IP66 / NEMA4X (indoor) variant up to 20HP / 460V or 3HP / 230V for harsh conditions
We offer an AC650 to AC10 substitution guide that goes over AC10 suggestive part number replacements (with options) to assist in making a majority of applications an easy transition. Reprogramming will need to occur in the AC10.
Noteworthy AC10 limitations that REQUIRE consideration:
- The AC10 will not do sensorless vector control of a PMAC motor, as was the case with the 650S. See the AC30V if you absolutely require SLV PMAC control, or our advisement would be to attach feedback to a PMAC and utilizing any of our servo product line found on Parkermotion.com.
- If your original program consists of extensive logic programming, value comparison, or generally housed a large program then the AC30V for 460V applications is a great cost-effective solution instead. (230V applications will need to consider AC690+ or AC890 solutions)
- The AC10 does not have a dedicated thermistor input. You can configure a Digital Input to be a NO or NC PTC sensor instead (see the AC10 manual), but it will not read a resistance value back from the motor. The 650 had dedicated thermistor terminals
- The AC10 is capable of Modbus RTU which comes standard with the drive. The AC650 could support Modbus RTU or El Bisynch with an option card. If your new application requires a different communication protocol other then Modbus RTU then an AC30V, 690+, or 890 drive should be considered.
- The AC10 is only capable of V/Hz or SLV capability which can cover a wide array of AC650 applications. If your new application requires motor feedback, see the AC30V or 690+ / 890 drives.
- The AC10 can not utilize any encoder inputs or function blocks (such as the single-ended encoder input the 650 could potentially use to trim speed)
- Although torque control is possible on the AC10 in SLV and torque compensation in V/Hz, it should be primarily considered for velocity applications. Instead, if finer torque control is required, advisement is to use the AC30V for 460V applications, or the 690+ / 890 for 230V applications.
More often than not, an AC10 is suited to retrofit a 650 application. However, in events where the AC10’s simplicity is not suited for retrofitting a 650 application then the AC30V can be utilized.
Items to think about when considering the AC30V versus the AC10:
- Spec'd in Closed Loop Vector for the new application
- Torque control
- If you spec in communication protocols
- If you need dedicated thermistor terminals
- System control with multiple drives
- If the 650 had extensive programming or logic implementation
The AC30V is capable of robust programming and closed loop vector control of AC induction and PMAC motors as well. If your redesign is also replacing a PLC, the AC30P or AC30D can be fantastic choices.
If your application used 230Vac, consider the following families instead.
If you're replacing the system and require 230Vac power, or if you would like some nuanced features, then these drives can be considered great solutions. For a thorough overview consult the respective catalog and/or manual at the Quicklinks at the top of the page, or contact your local Parker representative to have your system evaluated.
- Dedicated STO circuit to SIL3 standards (Safety Integrity Level 3)
- Common Supply (CS) + Common Drives (CD) variants if you had multiple drives in a system and would like to common bus them together.
The 690+ was an option for many years but has been discontinued.
3SEP19 - JD
GLH - ADDED NOTE ABOUT 690+ June 2022
28NOV2022 - JD update