Beckhoff PS2001-2440-0000, Documentation, Page: 15 / 30

Technical data, application notes, wiring
PS2001-2440-0000 15 Version: 1.0
4.3 Buffer storage time
The buffer time (sometimes also called autonomy time) is the maximum timespan over which the capacitor
can maintain the required output current. The buffer time mainly depends on the output current in buffer
operation.
Any number of buffer modules can be connected in parallel in order to increase the buffer time.
Buffer time Min. 160 ms At 22.5 V, 40 A
Min. 320 ms At 22.5 V, 20 A
Typ. 250 ms At 22.5 V, 40 A
Typ. 500 ms At 22.5 V, 20 A
Typ. 62 s At 22.5 V, 0.1 A
Fig. 9: Buffer time, typ.
Fig. 10: Buffer time for low buffer currents, typ.