Hach-Lange SC 200 Active 4-20 mA Output Module User Manual - Manual (Page 4)

N O T I C E
Potential Instrument Damage. Delicate internal electronic components
can be damaged by static electricity, resulting in degraded performance
or eventual failure.
Three isolated analog outputs (output 1–output 3) are provided. Such
outputs are commonly used for analog signaling or to control other external
devices. Each output is loop powered and requires a customer supplied
12 to 24 VDC power supply or the use of internal module power. To install
the module and connect the outputs, refer to the
Illustrated steps
on page 6 and either Table 1 or Table 2 .
Table 1 Wiring information for module powered
Output Connection Connector pin number
Output C (+) IN 1
— — 2
Output C (–) IN 3
Output B (+) IN 4
— — 5
Output B (–) IN 6
Output A (+) IN 7
— — 8
Output A (–) IN 9
Table 2 Wiring information for external customer powered
Output Connection Connector pin number
Output C (–) IN 1
Output C (+) IN 2
— — 3
Output B (–) IN 4
Table 2 Wiring information for external customer powered
(continued)
Output Connection Connector pin number
Output B (+) IN 5
— — 6
Output A (–) IN 7
Output A (+) IN 8
— — 9
1. Disconnect controller power.
2. Open the controller cover.
3. Feed the twisted-pair shielded wire through the strain relief.
4. Adjust the wire as necessary and tighten the strain relief.
5. Connect the shield at the power supply side. The power supply positive
polarity connects to the (+) terminal, and the negative polarity connects
to the (-) terminal (
Figure 1 or Figure 2 ).
• Do not connect the shield at both ends of the cable.
• Use only shielded cable to minimize radio frequency emissions and
susceptibility.
• External loop resistance may be required ( Table 3 or Table 4 ).
6. Close the controller cover and tighten the cover screws.
7. Connect controller power.
8. Configure outputs in the controller.
4 English