Hach LXV525.99A15551, User Manual

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Option Description
Function Sets the function value. Setup options change based on the selected function.
• Alarm—Operates the relays in response to the measured parameter.
• Feeder control—Operates the relays in response to the measured parameter.
• 2 point control—Operates the relays in response to the measured parameter with two
setpoints.
• Warning—Operates the relays when the controller finds a SC device warning. Shows the
warning and error condition of the selected devices.
• Pulse width control—Lets the relays give a pulse width modulated output.
• Frequency control—Lets the relays operate in a cyclic manner at a frequency between
the minimum pulses for each minute and maximum pulses for each minute.
• Timer—Lets the relays to operate at set times independently of the process value.
• System error—Shows if a device has an internal error or warning.
Transfer Sets the transfer value. Options: Relay is energized or Relay is de-energized. (default).
Input value Shows the process value read from the selected source after the internal formula parser
sends the process value (if prompted).
Data logger
interval Sets the interval at which the controller saves the shown value to the data logger. Options:
OFF (default), 5 minutes, 10 minutes, 15 minutes, 20 minutes or 30 minutes.
3. Complete the settings based on the Function setting.
Alarm function
Option Description
Phase Sets the relay condition when the process value is out of the controlled band.
Options: Direct control or Reverse
High alarm Sets the maximum value of the controlled band in the selected parameter unit.
Low alarm Sets the minimum value of the controlled band in the selected parameter unit.
High deadband Sets the hysteresis value used at the upper limit.
Low deadband Sets the hysteresis value used at the lower limit.
Timer on delay Sets a delay time for the relay to stay on.
Timer off delay Sets a delay time for the relay to stay off.
Relay contact status Displays and logs the status of the relay contact (ON or OFF).
Feeder control function
Option Description
Phase Sets the relay condition if the process value is more than the setpoint. Options: Value
above the limit or Value below the limit.
Relay setpoint Set the process value at which the relay condition changes.
Deadband Sets a hysteresis so the relay will not swing unregulated when the process value
converges to the setpoint.
OnMax TIMER Sets a maximum period of time. During this period the relay stays on when passing the
setpoint. When the time expires, the relay changes to OFF regardless of the process
value.
Timer on delay Sets a delay time for the relay to stay on.
Timer off delay Sets a delay time for the relay to stay off.
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