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12
operation manual
temperature contoller ELTC-MV2
BU 123
Revision 1
SETPOINT CONTROLLER (W1)
Setpoint controller (W1) 2-point
The actual value x 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.
The setpoint w is set on the controller and shown on the
display.
A hysteresis h can be set on the controller.
The control difference x
d
= (w - h) -x is formed in the control-
ler.
Hybrid relay K1 (2-point)
If the control difference is x
d
< 0 , the hybrid relay opens.
If the control difference is x
d
≥ 0 , the hybrid relay closes.
Control of an external SSR relay (2-point)
The external SSR relay is switched via a voltage signal from the
controller.
If the control difference is x
d
< 0 , a 0/2V signal is sent to the
output and the SSR relay switches off.
If the control difference is x
d
≥ 0 , a 10V signal is given to the
output and the SSR relay switches on.
Control of an external power contactor (2-point)
The external power contactor is switched via the controller's
safety relay.
A hysteresis h can be set on the controller.
If the control difference is x
d
< 0 , the safety relay opens and
the external power contactor switches off.
If the control difference is x
d
≥ 0 , the safety relay closes and
the external power contactor switches on.
Structure switch settings
No.
description
selection option
S01
Selection actual
value 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)
S03
Select setpoint W
[1] = Fixed value W1
S04
Selection of output
function controller
[1] = two-point control
S05
Selection swit-
ching output
[1] = internal hybrid relay with
soft start
2 = external power contactor
3 = analog output clocked
Parameters used
No.
description
factory set-
ting
Own
setting
P01 Input variable X1
Display only
P03 Reference variable W
Display only
P04 Current display
Display only
P10 Control setpoint 1 (=W1)
5
P11 Switching hysteresis
2
P12 min. standstill time K1
0
P13
largest adjustable setpo-
int 1
950
P14
smallest adjustable
setpoint 1
-50
P15 sensor correction 1
0
P16
Over temperature alarm 1
999
P17 low temperature alarm 1
-99
P18
Lower analog scaling
value
0
P19
Upper analog scaling
value
100
P28
power monitoring
load output
0
P75
Low level mode analog
inputs/outputs
0
FUNCTIONAL DESCRIPTIONS
