Datasheet

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Industrial Power Supplies
TSP-WR Series 180–600 Watt
TSP–BFM24 Buffer Module
The TSP-BFM24 Buffer Module will hold the output voltage of a 24VDC power sup-
ply after brown outs or voltage dips of up to ten full 50Hz cycles. During this buffer
period no deterioration of the 24VDC output voltage will occur. For many applica-
tions this buffer module is an ideal and cost effective alternative to a battery based
backup system. The buffer module consists of a large bank of capacitors. When the
power supply is switched on, the buffer capacitors will be charged. This will take
approximately 30 second and an opto-coupler signal is indicating the „READY“
condition. When a power fail occurs, the capacitor bank is discharged, maintaining
the output of the buffer module at its nominal voltage. This condition is indicated by
an „POWER FAIL“ signal. The hold up time is typically 200ms at 25A and 4 seconds
typically at 1,2A. After 4 seconds the buffer device will switch off the output voltage.
The operation modes of the module are indicated by a LED on the front panel also.
The big advantage of this buffer solution is, that it is fully maintenance free and its
storage capability does not deteriorate over the live time of the product.
Order code
(includes terminal plugs)
Operating Voltage
Range
Buffer Time Output Power
max.
TSP-BFM24
24...28VDC
200ms typ. @ 25A max.
4.0 s max. @1.2A
600 W
Models
Function Diagram Connector Positions
TSP
Load
Inhibit
Volt adjust
Voltage
Detection
Voltage
Detection
Discharge
Charge
Active
Ready
J2.2
J2.1
J1.1
J1.2
J1.3
J1.4
J2.4
J2.3
J2.6
J2.5
Specifications
Operating temperature – 25°C...+70°C max. (–13°F...+158°F)
derating above 40°C (104°F): 1.5%/K
Electromagnetic compatibility in correspondence to connected units (no internal
switching device)
Buffer voltage adjustable, >1V below input voltage, min. 22VDC
Charging 0.6A max. / 30s max.
Status signals Buffer Active , Buffer Ready (optocoupler output)
and dual colour LED for status indication
Inhibit optocoupler input: 35V max. <5mA
Dimensions see page 8
Installation instructions
www.tracopower.com/products/tsp-bfm_inst.pdf