Function Description
Operating Manual PMCprotego D.48, PMCprotego D.72
1001735-EN-04
37
} Multiple servo amplifiers interconnected via the intermediate circuit (DC+, DC-)
– Multiple servo amplifiers of the same series with mains voltage from the same
mains can be operated on a common intermediate circuit.
– 90% of the total output of all the servo amplifiers is always available for peak and
continuous output. In the case of overvoltage, the amplifier shuts down at the lowest
shutdown threshold based on the tolerance (as described above for the single amp-
lifier).
} The technical details for the brake resistor depend on the type of servo amplifier and
the mains voltage.
NOTICE
With a mains voltage of 480 V we recommend the setting VBUSBAL = 4.
With this setting an optimised calculation variant is used.
4.2.5 Intermediate circuit
PMCprotegoD.48 that are supplied from the same network can be linked via the direct cur-
rent intermediate circuit ("intermediate circuit" for short). This interconnection is termed a
multi axis system.
This connection
} balances the braking and operating energy of multiple axes.
} distributes the braking energy over multiple brake resistors.
Optionally, an energy store can be connected
(see Energy store PMCenergy SD [ 115]).
NOTICE
High transient currents between connected intermediate circuits can destroy
the servo amplifier.
- Supply the servo amplifier from the same mains (identical mains voltage).
- Do not wire servo amplifiers with smaller outputs between two servo ampli-
fiers with higher outputs.
- Ensure that the total rated currents of all the servo amplifiers connected in
parallel in an intermediate circuit does not exceed 96A
RMS
(140 A
PEAK
).
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