Celduc Temperature controller ECOM - Manuel (Page 69)

70 ECOM0010 - User manual
Pv
Comand Spv
Alarm Spv
Off
On On
Hysteresis
parameter
$+< > 0
Time
Alarm
output
Comand Spv Comand Spv Comand Spv Comand Spv
Alarm Spv Alarm Spv
Value of alarm setpoint less
than “0” and hysteresis value
greater than “0” (Par.20
D+<
> 0).
N.B.: With hysteresis less
than “0” (
D+<
< 0) dotted
line moves under the alarm
setpoint.
10 Error fl ags
If the system shows malfunctions, the controller switches off
the control output and reports the error fl ags on word 1009.
For example, the controller will report a defective
thermocouple by fl ashing alternately red/yellow LED and
setting to 1 the bit 0 of the word 1009.
For other signals see table below:
Cause What to do
BIT2
Error programming the
EEPROM
Call assistance
BIT0
Cold junction sensor
failure or room
temperature OFF the
limits
Call assistance
BIT3
Incorrect confi guration
data. Possible loss of
calibration values
Check that confi guration
parameters are correct
BIT1
Broken thermocouple
or temperature OFF the
limits Check the connection
with the sensors and their
integrity
BIT4 Missing calibration Call assistance