R7426D UNIVERSAL INPUT CONTROLLER
13
EN1B-0204GE51 R0403
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.
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 CPA value = 0
•
for CPATYP 2 SPA value = control parameter W1
Standard
Display
and
and
and
: Main Sensor X1 is defective
: Limitation or Cascade Sensor X2 is defective
: Compensation Temperature Sensor T3 is defective
T3 is displayed in
X1 and X2 is displayed in
Display if during power up
no sensor is connected
Display after error identification during operation
Standard
Display
SEL
SEL
SEL
SEL
Fig. 11. Error Handling
B
A
SET
Standard
Display Mode
Push
simultaneously
for appr. 2sec
2x
SET
Push
until needed
value is displayed
Parameter
Selection Mode
Parameter
Adjustment Mode
Parameter
Selection Mode
A
B
SEL
%
%
Fig. 12. Adjustment Example
This example describes the
adjustment of the compensation
change-over point
W
comp
(P03).
