Rev. 1.0
WALTHER Temperature Controller Bundle WTRB-x-x
Page 31 of 42
Walther Systemtechnik GmbH
– D 76726 Germersheim
Telefon: +49 (0)7274-7022-0 Telefax: +49 (0)7274-7022-91
http://www.walther-2000.de
Limit Monitoring (Li1, Li2)
The device has two functions for limit value monitoring (Li 1, Li 2) with eight different alarm functions (AF1 to
AF8) each. Both outlet signals are available in the binary functions.
ConF
->
L1
,
L2
->
Parameter
Value
Description
Alarm function
FnCt
0
Limit value monitoring turned off
1
AF1: limit value above and below the desired value (moni-
toring tape); symmetrical or unbalanced
2
AF2: as AF1, outlet signal inverted
3
AF3: limit value below desired value
4
AF4: as AF3, outlet signal inverted
5
AF5: limit value above desired value
6
AF6: as AF5, outlet signal inverted
7
AF7: fixed limit value (separate from desired value)
8
AF8: as AF7, outlet signal inverted
Limit value
AL, AL2
-1999 ...
0
...
+9999
Limit value to be monitored when limit value is unbal-
anced: AL is below desired value, AL2 above desired
value. Limit value range for AF1 and AF2: 0 ... 9999
Switch differential
HySt
0 ...
1
...
9999
Switch differential for limit value
Behavior for Out-of-Range / Sym-
metry of limit value
ACrA
0
Off / symmetrical (only AL active)
Behavior for Out-of-Range / Sym-
metry of limit value
ACrA
Turn-on delay
tOn
1
On / symmetrical (only AL active)
2
Off / unbalanced (AL and AL2 active)
3
On / unbalanced (AL and AL2 active)
Switching status for exceeding or falling short is measur-
ing range (Out-of-Range) / Symmetry for alarm functions
AF1, AF2
0 … 9999
Turn-on delay of outlet signal (in seconds)
Actual value
AFPr
2
Signal to be monitored;
2 = actual value
"Analog Se-
lector", page 15
Desired value
AFSP
3
Desired value for limit value monitoring (reference signal
for AF1 to AF6);
3 = current desired value
