JUMO 709040 TYA-110 thyristor power unit Operating Manual - Manual (Page 45)

Power units 02.06 45
6 Settings
Controller with
voltage output This only uses the voltage input of the thyristor power unit. A 5 k
Ω potention-
meter is required on Terminals 3 and 5 for manual operation.
6.5 Subsidiary control loops
Subsidiary control loops are primarily used to eliminate or compensate exter-
nal disturbances, such as supply-line fluctuations and changes in resistance
which would have a negative effect on the regulation. A subsidiary V
2
control
loop is set up ex-factory. With extra code TR or TO this can be changed to P
or I
2
control. The free-running economy circuit must operate with a P control
loop.
v Section 6.2 “Adjustment switches S1 — 21 and pin headers X503 / X504”
v Section 6.7 “Load current adaptation (only with extra code TR/T0)”
Switch S
c
Automatic operation position 1
Manual operation position 2
H
With P or I
2
control loops (extra code TR/TO) a load current adap-
tation must be made for operating currents that are less than half
the rated load current.
Control
type Internal switches Application
S4 S5 S6
V
2 1 0 0 - positive TC,
- R
≈ constant
- brightness controls