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• DOK-POWER*-TVD*1.3****-ANW1-EN-E1,44 • 02.97
5. Terminal Descriptions
Output UD
5.7. Power OK
Potential free contact – terminal X4/3 – X4/4
Maximum load: DC 24 V/1 A; AC 250 V/1A
Operating status
Relay
Fault
Power
de-energized
OK
Output
open
open
closed
The UD contact acknowledges proper operation of the power system.
UD opens for the following faults:
• mains power failure / missing phase
• DC bus voltage lower than 270 V
The reaction of the drive sytem to these faults depends on the NCB link. See
section 5.4 for details.
If CNC-controlled braking is required, the drives must be stopped by the
master controller when the UD contact opens.
5.8. Regenerated power too high
Potential free contact – terminal X4/5 – X4/6
Maximum load: DC 24 V/1 A; AC 250 V/1A
Operating status
Relay
Regenerated
Regenerated power
de-energized
power
within
too high
permissible
limits
Output
open
open
closed
The bleeder prewarning contact opens if the regenerated continuous power
is greater than the continuous bleeder power. If the bleeder load continues to
climb and reach thermal overload, then the main contactor in the TVD
interrupts the power supply and Bb1 opens.
The reaction of the drive system to this fault depneds on the NCB link. See
section 5.4 for details.
Output BVW
