Power And Output Wiring - Hach sc200 User Manual

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These industrial Ethernet switches can be powered from the same DC source that is used

to power your other devices. A voltage in the range of 10 to 30 VDC needs to be applied

between the P1 (plus) terminal and the Minus terminal as shown in the diagrams on the

next page. The chassis screw terminal should be tied to panel or chassis ground. To

reduce down time resulting from power loss, these industrial Ethernet switches can

optionally be powered redundantly with a second power supply as shown in the diagrams.

The managed models also have an "OK" output that can be tied to a PLC input or other

device to indicate when there is a power loss. When ON, this output will source the same

voltage that is applied to the switches power terminals. See the wiring diagrams on the

Screw Torque

When tightening the screws be careful to tighten to a max. torque of 5 in/lb (0.57 Nm).

BEFORE PERFORMING ANY WIRING TO THESE SWITCHES MAKE SURE ...

SHORTING THE

POWER TO THE

BLOCK BEFORE

UL Requirements

Sixnet Slim Line Switch Installation Guide

Power and Output Wiring

THE AREA IS CURRENTLY NONHAZARDOUS (ESPECIALLY WHEN

WORKING IN CLASS I, DIV 2 OR ZONE 2 HAZARDOUS LOCATIONS)

TO TURN OFF THE POWER TO THE SWITCH

TO UNPLUG THE SCREW TERMINAL BLOCK (This is especially important on

the units that have a metal case as shown below. Connecting or disconnecting

wires to the screw block when it is in place and the power is turned on can

allow the screwdriver to short the power to the case.)

To meet the requirements for UL you must do one of the following:

1. Install a 3.33 Amp maximum fuse at the input of the switch.

2. Use a Class 2 rated power supply to power the switch.

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