Hach-Lange SC 200 Basic User Manual - Manual (Page 19)

4. Make connections with twisted-pair shielded wire and connect the shield 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 emission or 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 connections
Discrete input wiring connections
W A R N I N G
Potential Electrocution Hazard. Always disconnect power to the instrument when making electrical
connections.
W A R N I N G
Potential electrocution hazard. In order to maintain the NEMA/IP environmental ratings of the
enclosure, use only conduit fittings and cable glands rated for at least NEMA 4X/IP66 to route cables in
to the instrument.
Three discrete inputs are provided for switch closure inputs or logic level voltage inputs. Make wiring
connections and configure jumper settings to the controller as shown in
Figure 9 , Table 4 and
Figure 10 .
Note: Figure 9 shows the back of the controller cover and not the inside of the main controller compartment.
English 19