Power Failure Mode - ABB COMMANDER 1900 Series Programming Manual

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...4 CONTROL CONFIGURATION LEVEL
4.3.2 Set Up Control Page (power-fail mode)
Information.
• Programmable power-up mode.
• Programmable output (or valve position) values.
PFMOdE
LASt
MANUAL
AUtO
MAN. M AN
OP ---
AUt. A Ut
OP ---
OFFSEt
---. -
AUt. A Ut
OP ---
MAN. M AN
OP ---
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38

Power Failure Mode

Select the default power fail mode required following a power interruption or failure:
LASt
restart in the
MANUAL
restart in
AUtO
restart in
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
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
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
Continued on page 40.
Continued on opposite page.
Continued on opposite page.
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Table 4.1 Power-up and Power-down Control Modes
existing prior to power failure.
same mode
.
Manual mode
.
Auto mode
LASt
. If
LASt
is selected the percentage control output present
LASt
.
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