Baumuller BUM64A, Manual

Page: 102 / 120

Electrical specifications
Manual Single Power Unit BUM64S/A/F
Document no.: 5.01056.03
Baumüller Nürnberg Electronic GmbH & Co. KG
102
of 118
D.3
6)
At the rated mains input voltage the unit will produce the rated/maximum output currents. At input voltages higher than rated mains input
voltage the output currents are to be reduced to keep the power output constant.
Characteristic curve: output current dependent on the mains input voltage
7)
Between 40° C and 55°C the output power (DC link peak load) must be reduced.
The permissible output current (I
0
) is calculated with the following formula:
* There may be 2 temperature values (cooling air, that flows inside the appliance / cooling air that flows through the heatsink).
Put in the higher value.
Example: Output rated current = 150 A, environmental temperature = 46° C
The output current must be then reduced to: 246 A
8)
The output peak power and the output peak current will be supplied for max. 120 seconds. That period depends on the previous motor
current and the temperature of the heatsink. See in the controller manual also.
9)
for cooling variants S and A only.