Overview

PS9011-2420-0000 | Buffer module 24 V, 20 A, 200 ms

Overview 1:

• Buffering with electrolytic capacitors

• Buffering of 24 V loads

• Minimum hold-up time 0.2 s at 20 A, longer hold-up time with smaller loads

• Clear status display by Status LED and signaling terminals

• Quick-connect terminals with spring-loaded terminals

The PS9011-2420-0001 Buffer Module is an additional device for regulated 24 V DC power supply units that can be used for various purposes:

Bridging of failures of the DC supply network with additional power
Extension of the hold-up time after failure of the AC voltage.
Short-term provision of an additional peak current that is higher than the nominal current of the power supply unit.

The buffer module uses maintenance-free electrolytic capacitors to store energy. This enables use even at ambient temperatures up to +70 °C.

The device requires no control wiring. It can be connected anywhere in parallel with the load circuit.

Buffer modules can be connected in parallel in order to increase the output current capacity or the hold-up time

Overview of technical data	PS9011-2420-0001
Supply voltage	DC24 V, -20 %/+25 % (19.2-30 Vdc)
Required voltage for charging the capacitors	23 Vdc
Threshold voltage for buffer operation	22.5 V / V_IN- 1 V (adjustable)
Buffer voltage	22.5 V / V_IN- 1 V (adjustable)
Buffer current	20 A
Charging duration	Typ. 18 s
Current consumption	Typically 80 mA (standby mode)
Current consumption	Max. 600 mA (when charging)
Power loss	1.9 W (standby mode)
Buffer time	Min. 200 ms (at 22.5 V, 20 A)
	Min. 430 ms (at 22.5 V, 10 A)
	Typically 310 ms (at 22.5 V, 20 A)
	Typically 670 ms (at 22.5 V, 10 A)
	Typically 43 s (at 22.5 V, 0.1 A)
Temperature range	-25 °C in +70 °C (in operation)
Dimensions (W x H x D)	64 x 124 x 102 mm
Weight	740 g
Markings/approvals	CE, cULus

*) All values typical for 24 V, 20 A, +25 °C ambient temperature and after a warm-up time of five minutes, unless specified otherwise