Hach Polymetron 9611sc PO43-LR Operation Manual page 15

Option
SET FUNCTION
SET TRANSFER
FAIL SAFE
Relay activation options
1. Push menu and select SETUP SYSTEM>SETUP OUTPUTS>RELAY SETUP.
2. Select the applicable relay.
3. Select ALARM in the FUNCTION menu and then select the applicable options in the
ACTIVATION menu.
Option
LOW ALARM
HIGH ALARM
LOW DEADBAND Sets the range where the relay stays on after the measured value increases above the
HIGH DEADBAND Sets the range where the relay stays on after the measured value decreases below the
OFF DELAY
ON DELAY
4. Select FEEDER CONTROL in the FUNCTION menu and then select the applicable options in the
ACTIVATION menu.
Option
PHASE
SET SETPOINT
DEADBAND
OVERFEED TIMER Sets the maximum amount of time to get to the process setpoint. When the time
OFF DELAY
ON DELAY
Description
Selects a function. ALARM—The relay starts when the upper or lower alarm value is
triggered. FEEDER CONTROL—The relay shows if a process value is larger or falls
below a setpoint. EVENT CONTROL—The relay toggles if a process value reaches an
upper or lower limit. SCHEDULER—The relay switches at certain times independently of
any process value. WARNING—The relay shows warning and error conditions in
probes. PROCESS EVENT—The relay switches when the analyzer does a specified
operation.
Selects active or inactive.
Selects yes or no.
Description
Sets the value to set the relay to on in response to the decreasing measured value. For
example, if the low alarm is set for 1.0 and the measured value drops to 0.9, the relay
starts.
Sets the value to set the relay to on in response to the increasing measured value. For
example, if the high alarm is set for 1.0 and the measured value increases to 1.1, the
relay starts.
low alarm value. For example, if the low alarm is set for 1.0 and the low deadband is set
for 0.5, the relay stays on between 1.0 and 1.5. The default is 5% of the range.
high alarm value. For example, if the high alarm is set for 4.0 and the high deadband is
set for 0.5, the relay stays on between 3.5 and 4.0. The default is 5% of the range.
Sets a delay time (0–300 seconds) to set the relay off (default = 5 seconds).
Sets a delay time (0–300 seconds) to set the relay on (default = 5 seconds).
Description
Specifies the relay status if the process value is larger than the setpoint. HIGH (default)
—sets the relay to on when the process value is larger than the setpoint. LOW—sets
the relay to on when the process value falls below the setpoint.
Sets the process value for the relay to toggle between the high and low value (default =
10).
Sets a delay so that the relay will be stable as the process value converges to the
setpoint.
expires and the relay does not show the setpoint, the relay is set to off. After an
overfeed alarm occurs, reset the timer manually.
Sets a delay time to set the relay to off (default = 5 seconds).
Sets a delay time to set the relay to on (default = 5 seconds).
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