The 63x family has been discontinued and system upgrades will be required.
The Parker (SSD / Eurotherm) servo drive 630 family includes the 631, 635, 637, 637+, 637F, and 638 designs. These were European drives that were not catalog items from the EMC division.
The overall system requirements will need to be understood to know which new product will be the best option.
The Compax3 family may be the primary option for system upgrades but some re-engineering will be required. It is not a drop-in replacement.
The IPA and P series servo drives may also be options depending on the system requirements and motor being used. Configuration and programming changes will be required as well as installation and cabling changes.
If you require assistance with redesign, a local Parker Distributor in your area can assist as well.
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User Guides:
Note - These accessories are not offered any longer so are listed here for reference only.
Note - the 635 may also be known as the APOLLO drive (ASB, Germany)
Note - the 637 may also be known as the SAMSON drive (ASB, Germany)
glh 6/2017
glh 5/2018 update
13SEP19 Update
30NOV2022 JD update
glh 5/2023 added 631 user guide, field bus guides, and accessories