Analog Output Connections - Hach sc200 User Manual

Analog output 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.
Two isolated analog outputs (1 and 2) are provided
outputs are commonly used for analog signaling or to control other external
devices.
Make wiring connections to the controller as shown in
Table 3.
Note: Figure 8 shows the back of the controller cover and not the inside of the main
controller compartment.
Table 3 Output connections
Recorder wires
Output 1+
Output 1-
Output 2+
Output 2-
1. 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 the
shield at the controlled component end or at the control loop end.
• Do not connect the shield at both ends of the cable.
(Figure 8). Such
Figure 8 and
Circuit board position
1
2
3
4
• 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
English 15