Hach sc200 User Manual

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Hach sc200 User Manual Manual pdf 24 page image

Analog output connectionsW A R N I N GPotential Electrocution Hazard. Always disconnect power to theinstrument when making electrical connections.W A R N I N GPotential electrocution hazard. In order to maintain the NEMA/IPenvironmental ratings of the enclosure, use only conduit fittings andcable glands rated for at least NEMA 4X/IP66 to route cables in to theinstrument.Two isolated analog outputs (1 and 2) are provided (Figure 8). Suchoutputs are commonly used for analog signaling or to control otherexternal devices.Make wiring connections to the controller as shown in Figure 8 andTable 3.1ote Figure 8 sKoZs tKe EacN of tKe controller cover and not tKe inside of tKePain controller coPpartPent.Table 3 Output connectionsRecorder wires Circuit board positionOutput 2– 4Output 2+ 3Output 1– 2Output 1+ 11. Open the controller cover.2. Feed the wires through the strain relief.3. Adjust the wire as necessary and tighten the strain relief.4. Make connections with twisted-pair shielded wire and connect theshield at the controlled component end or at the control loop end.• Do not connect the shield at both ends of the cable.• Use of non-shielded cable may result in radio frequency emissionor susceptibility levels higher than allowed.• Maximum loop resistance is 500 ohm.5. Close the controller cover and tighten the cover screws.6. Configure outputs in the controller.Figure 8 Analog output connectionsDiscrete input wiring connectionsW A R N I N GPotential Electrocution Hazard. Always disconnect power to theinstrument when making electrical connections.W A R N I N GPotential electrocution hazard. In order to maintain the NEMA/IPenvironmental ratings of the enclosure, use only conduit fittings andcable glands rated for at least NEMA 4X/IP66 to route cables in to theinstrument.18 (nglisK