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38
PFMOdE
LASt
MANUAL
AUtO
MAN.MAN
OP ---
AUt.AUt
OP ---
OFFSEt
---.-
AUt.AUt
OP ---
MAN.MAN
OP ---
Power Failure Mode
Select the default power fail mode required following a power interruption or failure:
LASt
–
restart in the
same mode
existing prior to power failure.
MANUAL
–
restart in
Manual mode
.
AUtO
–
restart in
Auto mode
.
Manual-to-Manual Power Fail Output:
is the control output value required when power-down state is Manual and power-up state is
Manual.
Set the control output value (or valve position) required following a power failure, between 0 and
100% in increments of 1%, or
LASt
. If
LASt
is selected the percentage control output present
prior to the power failure is retained.
Auto-to-Auto Power Fail Output:
is the control output value required when power-down state is Auto and power-up state is Auto.
On power-up the controller presets the Integral component to give bumpless operation on power-
up, at the selected output value, using the current process variable and set point values. If
AUtO
is selected the Integral component is not preset.
Set the control output value (or valve position) required following a power failure, between 0 and
100% in increments of 1%, or
LASt
.
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4.3.2
Set Up Control Page (power-fail mode)
Information.
• Programmable power-up mode.
• Programmable output (or valve position) values.
…4
CONTROL CONFIGURATION LEVEL
Table 4.1 Power-up and Power-down Control Modes