S−LINK Control UnitFP04 − 94.4 Sequence of Turning on Power Supplies4.4 Sequence of Turning on Power SuppliesWhen turning on the power supplies to the S−LINK control unit, follow the sequenceoutlined below.Procedure:1. Turn on the power supply to the S−LINK I/O devices connected to theS−LINK system.2. Turn on the external power supply to the S−LINK.3. Last, turn on the power supply to the S−LINK control unit itself.1. Power supply of S−LINK I/O devices: on2. External power supply for S−LINK: on3. Power supply of S−LINK control unit: onIf using the power supply of booster, start up the booster before the external powersupply for S−LINK.When turning off the power supplies, reverse the order of the sequence noted above.