2

Power Supply Installation

After setting the rack number selection jumpers, install the power supply as instructed in its datasheet. An AC power supply installs directly in the leftmost slot of the rack. For DC power supplies, a Power Supply Adapter installs in the leftmost slot. The DC power supply itself can either be installed on the side of the rack or used as a freestanding module up to 20 inches from the adapter module.

Power Supply Switch

On an AC power supply, the switch on the front of the power supply controls power to the rack. With the switch in the up (ON) position, the power supply is on and power flows to the rack. With the switch down (OFF), power is disconnected from the rack.

With a DC power supply, an external switch must be installed to control input power.

Caution

Power must be off when installing or removing modules.

Power Supplied to Two Racks

The120/240VAC 55±Watt, 24VDC 90±Watt,and120/240VAC 100±Watt power supplies can be used to supply power to two racks. The 125VDC, 60±Watt supply cannot provide power for two racks.

Connect the rack with the power supply to the second rack using the two±rack power extension cable (catalog number IC697CBL700). Plug the cable into the connectors on the left side of each rack. When using a DC power supply mounted on the side of the rack, the power extension cable must be installed first; the DC power supply will block access to the connector on the side of the rack.

Maximum cable length between two racks that share a power supply is 3 feet (1 meter).

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INSTALL CABLE

 

SO THAT THE

 

INDICATED END

POWER

IS SUPPLYING

SUPPLY

POWER

 

FIRST

RACK

TWO

RACK

POWER

CABLE

FACE

PLATE

SECOND

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Series 90±70 Remote I/O Scanner User's Manual ± July 1992

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GE GFK0579B user manual Power Supply Installation, Power Supply Switch, Power Supplied to Two Racks

GFK0579B specifications

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