Datasheet
http://www.tracopower.com Page 5 of 11
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 24 VDC power
supply after brown outs or voltage dips of ten 50Hz cycles at full load. During this
buffer period no deterioration of the 24 VDC output voltage will occur. For many
applications 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 seconds and an opto-coupler signal indicates 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 200 ms at
25 A 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. @1.2 A
600 W
Models
Function Diagram Connector Positions
TSP
Load
Inhibit
Volt adjust
Voltage
Detection
Voltage
Detection
Discharge
Charge
Active
Read
y
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 to +70°C max.
derating above +40°C : 1.5 %/K
Electromagnetic compatibility in correspondence to connected units (no internal
switching device)
Buffer voltage adjustable, >1 V below input voltage, min. 22 VDC
Charging 0.6 A max./30 s max.
Status signals Buffer Active , Buffer Ready (optocoupler output)
and dual colour LED for status indication
Inhibit optocoupler input: 35 V max. < 5mA
Dimensions see page 8
Installation instructions www.tracopower.com/products/tsp-bfm_inst.pdf