There are important differences between a Regenerative and Non-Regenerative DC 590+ drive.
You can find this information, and much more, from the manual. Follow this QuickLink to the 590+ product page on Parker.com and look under the "Product Supprt" tab for Manuals, QuickStarts, Appnotes, etc.
- Normal Stop and Program Stop are only relevant for a “regenerative” controller. See Below.
|Regenerative (4Q)||Non-Regenerative (1Q / 2Q)|
|Part Number||590+ (Chassis) or 955+8Rxxxx (DRV)||591+ (Chassis) or 955+8Nxxxx (DRV)|
|Rotation Direction||Bidirectional||Unidirectional ONLY|
|Motoring/Braking||Motoring + Braking in both directions||Motoring in the forward direction. Braking in the forward direction only with a DC Contactor installed.|
A regenerative drive can be stopped using a Normal Stop (uses STOP TIME to set duration of the stop), a Program Stop, or an Emergency Stop.
It can stop faster than a coast stop because reverse current is allowed to flow through the drive.
A non-regenerative drive can only be stopped at the coast stop rate (whatever friction and loading allows).
To dissipate energy faster, a DC Contactor is required.
Dynamic Brake (DC Contactor)
Requires a Dynamic Brake if excessive regeneration energy is calculated in order to dissipate energy. The manual has threshold values associated with each regenerative drive.
|Required if energy requires dissipation faster than the coast stop rate.|
Consists of two fully-controlled thyristor bridges and a field bridge with full transient and overload protection.
12 Thyristors for Forward(6) + Reverse(6) Spin. Four on each phase.
Consists of one fully-controlled thyristor bridge and a field bridge with full transient and overload protection.
6 Thyristors for Forward Spin. Two on each phase.
Two snippets from the manual on the REGEN ENABLE parameter's functionality between a Regen and Non-Regen Drive. Click for clarity.
A Regen drive will behave just like a Non-Regen Drive with this parameter.