Schneider Electric 840 USE 106 0 manual 5Operation, Preconditions, Starting

Using a Quantum IEC Hot Standby System

7.5Operation

Starting Your Hot Standby System

Preconditions

Note: Start one controller at a time.

Be sure

the controller you are starting first has been fully programmed;

lthe function keyswitch on the CHS 110 module is in the Run position;

the designation slide switches on CHS 110 modules are in opposite positions.

Starting the	The first controller to power up, automatically becomes the Primary controller,
System	regardless of its designation as A or B.
	Step	Action
	1	Turn on power to the first backplane.
	2	Start the controller in that backplane.
	3	Turn on power to the second backplane.
	4	Transfer the program from the Primary to the Standby controller by putting the
		keyswitch in transfer position and pressing the update push button on the
		Standby’s CHS module (refer to Using a Quantum 984 HSBY System, p. 67).

138 840 USE 106 00 January 2003