Pro-EC44 2-Loop Graphical Profile Controller & Recorder
Pro-EC44 Product Manual - 59540-2 September 2014
Page 93
Power/Signal Lost Recovery Actions
If the power is cut or the input signal is lost while a profile is running, the instrument will use
the defined
Profile Recovery Method
once the signal / power returns. The profile recovery
method is set in the profile header.
The possible profile recovery options are explained below.
Possible Recovery Methods:
See
note
below
A
E
End the profile and maintain the setpoint value(s) from the time the power failed.
B
End the profile and use Controller Setpoint value(s).
C
End the profile with the Control outputs off -
setpoint value replaced by “OFF”.
D
Restart the profile again from the beginning.
E
Continue profile from the point it had reached when the power failed
Figure 55.
End, Abort and Recovery Actions
Note:
Recorder versions always use option E (Continue profile) if the
“off time” is
less than the Profile Recovery Time setting. If the
“off time” is longer, the defined
Profile Recovery Method is used.
Note:
With option E, after the power returns profile bar graph resets and shows
the remaining/elapsed time for the profile only since re-starting.
Controller SP
Run
(Start-on SP)
Power off or input lost
Power / input returns
= Control Off
Planned Profile
Off Time
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