JUMO 709061 TYA 201 - Single-Phase Power Controller Operating Manual - Manual (Page 56)

5 Configuration
54 2012-12-01/00561071 [SCR Power Controller TYA201]
Subordinate control
loop U
2
, U, I
2
, I, P Note:
The subordinate control loop only appears for:
Power controller
r
SCR control
r
Continuous (control-
ler).
Subordinate control loops are used to eliminate or compen-
sate external
disturbances, such as fluctuations in the supply voltage and
changes in load resistance, which would have a negative ef-
fect on the control loop.
The U setting is used when the load voltage should be directly
proportional to the default setpoint value.
The I setting is used when the load current should be directly
proportional to the default setpoint value.
The following subordinate control loops have proven advanta-
geous for heating elements that do not have a linear tempera-
ture behavior or are subject to aging:
U
2
is used for:
- Positive temperature coefficient, molybdenum disilicide
- If
R
∪
is constant
- Brightness controls
I
2
is used for:
- Negative temperature coefficient (TC)
P is used for:
- Temperature-dependent temperature coefficient
- Free-running economy circuit
- General applications
- SIC load with automatic aging compensation
Switched off The diagram shows how the phase angle is specified via a
standard signal without a subordinate control loop.
Value/settings Description
k / bold = factory setting
Phase angle α
0 to 20 mA
0 to 10 V
Analog input