Hach-Lange SC 1000 - Manual (Page 93)

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Advanced Operations
Figure 56 Relay behavior, Feeder Control mode
1 Deadband (Phase=Low) 5 ON delay (with phase set low)
OFF delay (with phase set high)
2 Deadband (Phase=High) 6 Time (x-axis)
3 Set point 7 Source (y-axis)
4 OFF delay (with phase set low)/
ON delay (with phase set high)
Table 29 Color/line code for Figure 56
Selected source
Relay contact (phase low)
Relay contact (phase high)