Technical data

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• DOK-POWER*-KDV*2.3****-ANW1-EN-E1,44 • 06.97
4. Control circuits
4.4. KDV 2.3 control circuits with dynamic braking
Modular synchronous motors are used.
This control circuit achieves a high degree of safety at low cost. The
monitoring capabilities built into the drive system are most effectively
implemented.
Typical applications:
• the KDV 2.3 is only supplying feed drives, and,
• if asynchronous main drives and feed drives are being operated by the same
KDV 2.3.
Dynamic braking always stops synchronous motors whether the drive
electronics are functioning or not.
Dynamic braking is only activated for drive faults. If the E-stop monitor is
tripped, then drives are stopped under drive regulation at maximum torque.
There is a controlled braking of the drives under drive regulation at
maximum torque with either an E-stop, or if the KDV 2.3 monitors are triggered
(e.g., as the result of a power failure).
The NC bridge (X10/13 - X10/14) must not be closed!
The mains contactor drops out immediately when the E-stop button is pressed.
An auxiliary contact on the mains contactor switches the drive enable signal
off. Drive internally, the velocity command is switched to zero in all drives.
There is a controlled braking of all drives.
A drive fault message from the KDV 2.3 (Bb1 contact), a fault signal from the
NC control unit (servo error), or the tripping of an axis travel limit switch results
in the mains contactor being switched off and the activation of dynamic
braking.
Application
Features
Operation