Name: Hach sc200
Brand: Hach
Rating: 5 (1 reviews)

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W A R N I N G

Potential electrocution hazard. AC mains powered controllers (115 V–230 V) are designed for relay

connections to AC mains circuits (i.e., voltages greater than 16 V-RMS, 22.6 V-PEAK or 35 VDC).

The wiring compartment is not designed for voltage connections in excess of 250 VAC.

24 VDC powered controllers

W A R N I N G

Potential electrocution hazard. 24 V powered controllers are designed for relay connections to low

voltage circuits (i.e., voltages less than 16 V-RMS, 22.6 V-PEAK or 35 VDC).

The 24 VDC controller relays are designed for the connection to low voltage circuits (i.e., voltages

less than 30 V-RMS, 42.2 V-PEAK or 60 VDC). The wiring compartment is not designed for voltage

connections above these levels.

The relay connector accepts 0.82 to 1.31 mm

(18 to 16 AWG) wire (as determined by load

application). Wire gauge less than 18 AWG is not recommended. Make sure that the field wiring

insulation is rated 80 °C (176 °F) minimum.

The Normally Open (NO) and Common (COM) relay contacts will be connected when an alarm or

other condition is active. The Normally Closed (NC) and Common relay contacts will be connected

when an alarm or other condition is inactive (unless the Fail Safe is set to Yes) or when power is

removed from the controller.

Most relay connections use either the NO and COM terminals or the NC and COM terminals. The

numbered installation steps show connection to the NO and COM terminals.

English 17

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