Dräger Medical Babytherm 8004, Техническая документация инструкция

Страница: 23 / 110

6132.300
All rig
ht
s reserved.
Copyright
re
se
rved.
V
e
rs
io
n
2
.1_
R
e
le
a
s
ed
_Pr
in
ted
on
_28
.03
.0
6_F6
13
230
0_
Fun
cti
on_
de
scri
p
ti
o
n
.fm
17
Babytherm 8004/8010 Function Description
1.2.4 WT Relay PCB The relays on the WT Relay WT control the energy-saving lamps, the infrared
elements, the Central Alarm PCB and the phototherapy assembly (option) of
the radiant warmer. A thyristor controls the infrared elements.
The WT Relay PCB carries the following subassemblies:
– Mains voltage selector
– Control and feedback of the infrared elements
– Safety relay of the infrared elements
– Relay for the energy-saving lamps and phototheray assembly (option)
– Control of the Central Alarm PCB
Figure 8 Block diagram of the WT Relay PCB
Mains voltage selector
The mains voltage selector adapts the primary circuitry of the toroidal-core
power transformer to the local mains voltage.