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26
operation manual
temperature contoller ELTC-MV2
BU 123
Revision 1
Sliding setpoint with continuous output
The actual value x
1
is recorded via a temperature sensor or a
standard signal and converted into a digital signal. Before this
signal is sent to the controller, the actual value is corrected.
The corrected actual value is shown on the display (P01).
The actual value x
2
is recorded via a temperature sensor or a
standard signal and converted into a digital signal. Before this
signal is sent to the controller, the actual value is corrected.
The corrected actual value is shown on the display (P02).
The temperature deviation w
2
is set on the controller and is
used to calculate the sliding setpoint w1.
The sliding setpoint w
1
= x
2
+ w
2
, is calculated in the control-
ler and shown on the display.
The size of the output signal can be limited by a minimum
and maximum value on the controller.
The hysteresis h is set on the controller. When controlling with
a continuous output, the hysteresis indicates the range in
which the output signal varies between 0/4mA and 20mA or
0/2V and 10V.
The control difference x
d
= w
1
- x
1
is formed in the controller.
If the control difference is x
d
< h, the output emits a signal up
to 20mA or 10V.
If the control difference is x
d
≥ h, the output emits a signal of
20mA or 10V.
If the actual value is above the set setpoint w, the output
emits a signal with 0/4mA or 0/2V.
Structure switch settings
No. description
selection option
S01
Selection actual
value 1 (X1)
[1] = Pt100, 3-wire (AE1)
2 = Pt100, 2-wire (AE1)
3 = thermocouple type J (AE1)
4 = thermocouple type K (AE1)
5 = voltage input (AE3)
6 = current input (AE3)
S02
Selection actual
value 2 (X2)
[1] = Pt100, 3-wire (AE2)
2 = Pt100, 2-wire (AE2)
3 = thermocouple type J (AE2)
4 = thermocouple type K (AE2)
5 = voltage input (AE4)
6 = current input (AE4)
S03 Select setpoint W
4 = Sliding setpoint (W2+X2)
S04
Selection of output
function controller
4 = continuous control
S05
Selection switching
output
3 = analog output clocked
Parameters used
No. description
factory
setting
Own
setting
P01 Input variable
1 (X1)
Display only
P02 Input variable
2 (X2)
Display only
P03 Reference variable W
Display only
P04 Current display
Display only
P05
output level at the proportional
controller/ steady controller
Display only
P11 Switching hysteresis
2
P12 min. standstill time K1
0
P15 sensor correction 1
0
P16
Over temperature alarm 1
999
P17 low temperature alarm 1
-99
P18
Lower analog scaling value
(0/2V, 0/4mA)
0
P19
Upper analog scaling value
(10V, 20mA)
100
P20 Control setpoint
2 (= W2)
5
P23
Largest settable setpoint 2
950
P24
Smallest settable setpoint 2
-50
P25 Sensor correction
2
0
P26
Over temperature alarm 2
999
P27 Low temperature alarm
2
-99
P28
Power monitoring
load output
0
P75
Low level mode analog inputs/
outputs
0
P76
min. output signal analogue
output
0
P77
max. output signal analogue
output
100