JUMO 709040 TYA-110 thyristor power unit Data Sheet - Manual (Page 4)

M. K. JUCHHEIM GmbH & Co • 36035 Fulda, Germany Data Sheet 70.9040 Page 4/12
3.2000 /00201355
Block diagram
Description of the
blocks
(1) load
(2) super-fast semiconductor fuse
(3) thyristor module
with RC protection circuit
(4) driver stage for thyristor module
(5) supply voltage
for control electronics
(6) optocoupler
(7) voltage transformer
(8) current transformer
(9) control electronics
(10) front trimmers
(11) fault-report output via relay or
optocoupler
(12) configuration switches
(13) message LED
(14) master-slave links
(15) output control, control inputs,
power level output
Description of function
From the control electronics (9), the firing pulses for the thyristors (3) pass through an op-
tocoupler (6). The different operating and load types can be set by internal switches (12).
Load current and voltage are sensed by the transformers (7) and (8), to provide subsidiary
U
2
, I
2
or P control.
Numerous monitoring functions (10) or (13) and a fault-report output (11) via relay or opto-
coupler are available. The fault-report output indicates load and part-load failure, as well as
a blown fuse. The transformer (5) provides the supply for the control electronics.