Speed Feedback Options - Parker 590+ DRV Product Manual

Speed Feedback Options

The DC590+ DRV Digital drive accepts the following types of speed feedback signals:
• armature voltage feedback ( see below)
• analog AC or DC tachometer generator feedback
• wire-ended electrical encoder feedback
• plastic (5701) or glass (5901) fiber optic Microtach encoder feedback.
Armature Voltage Feedback (default), does not require a feedback device, external isolator or any external connections.
This effectively provides an open-loop system. It equates the speed of the motor to voltage, but without compensating for the motor resistance within
the system. Applying the parameter IR COMPENSATION can improve this. However, although the performance is adequate for some applications,
another form of speed feedback should be used where accurate speed control is required.
NOTE
The speed loop is set-up for armature voltage by the SPEED FBK SELECT parameter in the SPEED LOOP function block. Select ARM
VOLTS FBK for this parameter.
NOTE
All other types of speed feedback require a separately ordered, controller-mounted, option board and external feedback device.
DC590+ DRV Series DC Digital Drive
Earthing
Screw
Speed
Feedback Comms
Option
Option
3-45
Installing the Drive