Datasheet

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Buffer Modules
TSP-BFM Series, 90–600 Watt
Features
◆
Capacitor bank for energy storage,
no battery needed!
◆ Guaranteed Hold-up-time 200 ms / 25 A
to 4 s / 1.2 A max.
◆ Output 24 to 28 VDC, 600W max.
◆ Active ready and inhibit signals
◆ Maintenance free, long lifetime,
performance also at low temperature
◆ 3-year product warranty
Order Code Input Buffer Time
Output Voltage
adjust.
Output Current
max.*
Output Power
max.
TSP–BFM24
24 VDC
200 ms typ. @ 25 A max.
4 s max. @ 1.2 A
24 VDC
25.0 A 600 W
Models
* Maximum current at nominal Vout
IEC 60950-1
UL 508
UL 60079-15
EMC
LVD
Buffer Module Possible TSP input source
TSP–BFM24
TSP 90-124
TSP 90-124N
TSP 180-124
TSP 360-124
TSP 600-124
C B
Scheme
The TSP-BFM24 buffer module will hold the output voltage of a 24 VDC power supply
after brown outs or voltage dips of ten 50 Hz cycles at full load. During this buffer pe-
riod 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 approxima-
tely 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 a “POWER FAIL“
signal. The hold up time is typically 200 ms at 25 A and 4 seconds typically at 1.2 A.
After 4 seconds the buffer device will switch off the output voltage. The operating
modes of the module are also indicated by a LED on the front panel. The major
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.