JUMO 703041 - Page 42

8 Configuration
42
1. Both parameters can be activated/deactivated with setup program.
Measurement offset
OFFS
-1999… 0… +9999 The measurement offset is used to correct a measured value
by a certain amount upwards or downwards.
Examples:
Measured Displayed
value offset value
294.7 +0.3 295.0
295.3 - 0.3 295.0
Special case: 2-wire circuit
If the input is connected to a resistance thermometer in 2-wire
circuit, then the lead resistance is set in ohms here.
Display start
SCL
-1999…0…+9999 On transducers with standard signal and on potentiometers, a
display value is assigned to the physical signal.
Example: 0 — 20mA  0 — 1500°C.
The range of the physical signal can be 20 % wider or
narrower without generating an out-of-range signal.
Display end
SCH
-1999… 100 …+9999
Filter time constant
dF
0 … 0.6 … 100 s To adjust the digital input filter (0sec = filter off).
63% of the alterations are acquired after 2x filter time constant
at a signal step change.
When the filter time constant is large:
- high damping of disturbance signals
- slow reaction of the process value display
to process value changes
- low limit-frequency (2nd order low-pass filter)
Fine tuning
start value
FtS
1
-1999 … 0 … +9999 v See “Customized fine tuning” on Page 43.
Fine tuning
end value
FtE
1
-1999 … 1 … +9999
Heater current
monitoring (output)
HEAt
0
1 … 10
No function
Binary output 1—10 (controller output)
The heater current is measured via a current transformer with
standard signal output and can be monitored by linking analog
output 2 to limit comparator 1.
The input signal range is 0 — 50mA AC (see probe type:
“Heater current”) and must be scaled correspondingly (display
start/end).
The heater current is measured when the heating contact is
closed. For this purpose, the binary output which controls the
heating contact (not the binary output for the alarm) has to be
selected here.
KTY correction value
at 25°C
(setup) 0
… 2000 … 4000 Ω Resistance at 25°C/77°F for linearization “KTY 11-6”
Analog input 1 InP1 ➔
Analog input 2 InP2 ➔
Symbol Value/selection Description
Factory settings are shown bold.
A
The controller uses the corrected value (= displayed
value) for its calculation. This value is not the same as
the actually measured value. If incorrectly applied, this
can result in impermissible values of the control
variable.
A
If these values are altered by mistake, then this setting
has to be canceled, using the procedure described
under “Customized fine tuning”.
These values can not be accepted by another
instrument.