JUMO DICON touch - Page 93

93
12 Configuration
If the actual value does not leave the monitoring band within this timeframe, an alarm signal is
generated. The alarm signal is maintained for as long as the maximum or minimum output level
is produced and the actual value is within the monitoring band.
An alarm may be caused by:
• Partial or total failure of heating elements or other parts in the control loop
• Reversal of the control direction (for example, "cooling" instead of "heating")
t
t
x
y
Dx
x
y
M
y
T
R
T
A
t1
t2
x Actual value Δx Monitoring band
y Output level y
M
Max. output level (for example, 100 %)
t1 Start of monitoring T
R
Response time
T
A
Alarm period t2 End of monitoring