Operation and Configuration
akYtec GmbH · Vahrenwalder Str. 269 A · 30179 Hannover · Germany Tel.: +49 (0) 511 16 59 672-0 · www.akytec.de
17
Fig. 6.5 Filter time constant
6.7
Correction
The sensor characteristic curve can be corrected by the user. Two correction parameters,
Offset and Slope, are provided:
–
Offset can be set in the parameter
SH
in measuring units in the range of
-500.0…+500.0 to correct the sensor initial error.
–
Slope can be set in the parameter
KU
within the range 0.5…2.0.
Set the correction parameters
SH
and
KU
if necessary. When the resistance thermome-
ter in 2-wire connection is used, Offset should be set to compensate the sensor line re-
sistance.
Fig. 6.6 Offset
Fig. 6.7 Slope
6.8
Digital input
The control process can be stopped or started with a switch connected to the digital input
(see Fig. 6.2). The parameter
Ev-1
(Digital Input Function) specifies whether the function
Remote start/stop with a closed or an open contact is active.
Ev-1
= nonE
– digital input inactive
Ev-1
= n-o
– control start with an open contact, control stop with a closed contact
Ev-1
= n-C
– control start with a closed contact, control stop with an open contact
Note:
If
Ev-1
≠
nonE, the parameter
r-S
is not available in the menu, only the remote
start/stop is enabled.
The logical state of the digital input depends on the contact resistance:
–
Open contact resistance:
< 1 kohm
T, °C
20
0
20
40
60
80 100
40
60
80
100
T , °C
without correction
with correction
T=T +
SH
SH
=
10 °
C
∆
T
M
M
M
T, °C
20
0
20
40
60
80 100
40
60
80
100
T , °C
T=T *
KU
M
M
without correction
with correction
