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1746-P2 Power Supplies (1746-P2 )
1746 Power Supplies

SLC 500 modular systems provide separate power supplies which must be mounted directly on the left end of the 1746 I/O chassis. Seven power supplies are available to meet your system power requirements: three AC -input power supplies and four dc-input power supplies.

Each chassis requires a power supply (which connects to the chassis without a separate cable) to provide power to the processor and each I/O slot. Consider future system expansion when selecting a power supply. Power supply features and benefits include:


  • All power supplies have an LED that indicates proper supply power; monitoring this LED can tell you at a glance whether your supply is operating properly.
  • Supplies have a hold-up time (the time the system is operational during a brief power loss) typically between 20 milliseconds and 3 seconds; power supplies are designed to withstand brief power losses without affecting the operation of the system. Actual duration of the power supply hold-up time depends on the number, type, and state of the I/O modules.
  • On AC power supplies, you can select either 120V or 240V operation by setting a jumper; no special wiring is required.

1746-P3 Power Supplies (1746-P3)
1746 Power Supplies

SLC 500 modular systems provide separate power supplies which must be mounted directly on the left end of the 1746 I/O chassis. Seven power supplies are available to meet your system power requirements: three AC -input power supplies and four dc-input power supplies.

Each chassis requires a power supply (which connects to the chassis without a separate cable) to provide power to the processor and each I/O slot. Consider future system expansion when selecting a power supply. Power supply features and benefits include:


  • All power supplies have an LED that indicates proper supply power; monitoring this LED can tell you at a glance whether your supply is operating properly.
  • Supplies have a hold-up time (the time the system is operational during a brief power loss) typically between 20 milliseconds and 3 seconds; power supplies are designed to withstand brief power losses without affecting the operation of the system. Actual duration of the power supply hold-up time depends on the number, type, and state of the I/O modules.
  • On AC power supplies, you can select either 120V or 240V operation by setting a jumper; no special wiring is required.

1746-P4 Power Supplies (1746-P4)
1746 Power Supplies

SLC 500 modular systems provide separate power supplies which must be mounted directly on the left end of the 1746 I/O chassis. Seven power supplies are available to meet your system power requirements: three AC -input power supplies and four dc-input power supplies.

Each chassis requires a power supply (which connects to the chassis without a separate cable) to provide power to the processor and each I/O slot. Consider future system expansion when selecting a power supply. Power supply features and benefits include:


  • All power supplies have an LED that indicates proper supply power; monitoring this LED can tell you at a glance whether your supply is operating properly.
  • Supplies have a hold-up time (the time the system is operational during a brief power loss) typically between 20 milliseconds and 3 seconds; power supplies are designed to withstand brief power losses without affecting the operation of the system. Actual duration of the power supply hold-up time depends on the number, type, and state of the I/O modules.
  • On AC power supplies, you can select either 120V or 240V operation by setting a jumper; no special wiring is required.

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