Model 5600ACO2 Automatic Changeover Unit
3. HOW TO OPERATE THE AUTOMATIC CHANGEOVER
Figure 3-1: Model 5600ACO2 Front Panel Layout
The front panel controls consist of three recessed rocker switches to select the operating mode of the
changeover and 56 LED status indicators.
3.1. AN OVERVIEW OF THE STATUS INDICATORS
There are 48 status indicators located on the front panel that show operational status of the 5600ACO2
at a glance.
3.1.1. Operating Mode Indicators
AUTO This green LED will be On when the unit is operating in the Automatic control mode.
MANUAL This green LED will be On when the unit is operating in one of the two manual control
modes.
GPI This green LED will be On when the unit is operating in the Manual GPI control mode.
The LED will be Off when the unit is in the Manual Front Panel or Automatic control
mode.
FRONT PANEL This green LED will be On when the unit is operating in the Manual Front Panel
control mode. The LED will be Off when the unit is in the Manual GPI or Automatic
control mode.
A This green LED will be On when the unit is operating in the Manual Front Panel control
mode and that Master A is selected. The LED will be Off when Master B is selected or
the unit is not in the Manual Front Panel control mode.
B This green LED will be On when the unit is operating in the Manual Front Panel control
mode and that Master B is selected. The LED will be Off when Master A is selected or
the unit is not in the Manual Front Panel control mode.
ACTIVE OUTPUT These two green LEDs indicate whether Master A or Master B is currently
selected.
OPERATION
Revision 1.3 Page 3-1
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