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Interpreting Error Messages
Different analog input errors can be identified by the
controller (Error handling). The defective input (X1, X2, T3)
will be displayed in the standard display mode (see Fig. 11)
after the corresponding value is selected.
Display if during power up
no sensor is connected
Standard
Display
and
and
and
Standard
Display Mode
Parameter
Selection Mode
This example describes the
adjustment of the compensation
change-over point W
comp
SEL
SEL
: Main Sensor X1 is defective
: Limitation or Cascade Sensor X2 is defective
: Compensation Temperature Sensor T3 is defective
Fig. 11. Error Handling
A
%
Push
simultaneously
for appr. 2sec
%
2x
B
(P03).
Fig. 12. Adjustment Example
R7426D UNIVERSAL INPUT CONTROLLER
Note: For the external CPA/SPA potentiometer input, no
error message is indicated if the potentiometer or wiring is
defective. In this case for control point or setpoint calculation
the following values are used:
•
for CPATYP 0 or 1
•
for CPATYP 2
Display after error identification during operation
Parameter
Adjustment Mode
Parameter
Selection Mode
SET
13
CPA value = 0
SPA value = control parameter W1
SEL
Standard
Display
SEL
X1 and X2 is displayed in
T3 is displayed in
B
Push
until n eeded
value is displayed
SET
SEL
A
EN1B-0204GE51 R0403
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