Hach sc100 User Manual page 38

Operation
4.9 System Setup Menu (continued)
Function set to FEEDER CONTROL
PHASE—"High" phase assigns the relay setpoint to respond to an increasing measured value; conversely, a "Low"
phase assigns the relay setpoint to respond to a decreasing measured value.
SET SETPOINT—Sets the value where the relay will turn on.
DEADBAND—Sets the range where the relay remains on after the measured value decreases below the setpoint value
(high phase relay) or increases above the setpoint value (low phase relay).
OVERFEED TIMER—Sets the time (0–999.9 minutes) to limit how long the relay can remain on.
OFF DELAY—Sets a time (0–999 seconds) to delay the relay from normally turning off.
ON DELAY—Sets a time (0–999 seconds) to delay the relay from normally turning on.
Function set to EVENT CONTROL
SET SETPOINT—Sets the value where the relay will turn on.
DEADBAND—Sets the range where the relay remains on after the measured value decreases below the setpoint value
(high phase relay) or increases above the setpoint value (low phase relay).
OnMax TIMER—Sets the time (0–999 minutes) to limit the time the relay can remain on.
OffMax TIMER—Sets a time (0–999 minutes) to delay the relay from normally turning off.
OnMin TIMER—Sets the time (0–999 minutes) to limit the time the relay can remain on.
OffMin TIMER—Sets the time (0–999 minutes) to limit the time the relay can remain off.
Function set to TIMER (RTC selected in SELECT SOURCE)
HOLD OUTPUTS—Set OUTMODE to select output hold operation and select channels that cause the outputs to be
held.
INTERVAL—Set the off time for the relay.
DURATION—Set the on time for the relay.
OFF DELAY—Set the time for additional hold/output time after the relay has been turned off.
Function set to WARNING CONTROL
WARNING LEVEL—Set the warning level that will trigger a relay. Range: 0–32. For example: If warnings 1–9 are active
on the instrument, set the warning level to 0 to allow all warnings to trigger the relay; set the warning level to 5 to allow
warnings 6 and above to trigger the relay. Set the warning level to 9 or greater to not trigger the relay on any warning.
Function set to PMW CONTROL
SET MODE—Auto or Manual
PHASE—Direct or Reverse
SET SETPOINT—Control Setpoint
DEAD ZONE—Zone around setpoint where output is off
PERIOD—3–60 second PMW period
MIN WIDTH—Minimum pulse width in 0.1 seconds
MAX WIDTH—Maximum pulse width in 0.1 seconds
PROP BAND—Proportional control band
INTEGRAL—Integral control setting (minutes)
Function set to FREQ CONTROL
SET MODE—Auto or Manual
PHASE—Direct or Reverse
SET SETPOINT—Control Setpoint
DEAD ZONE—Zone around setpoint where output is off
MIN WIDTH—0.001–200 pulses per minute
MAX WIDTH—0.001–200 pulses per minute
PROP BAND—Proportional control band (this is outside of the dead zone)
INTEGRAL—Integral control setting (minutes)
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