Hach NA5600 sc Na+ Mode D'emploi page 16

Option
SET FUNCTION
SET TRANSFER
FAIL SAFE
• ALARM function (refer to
Option
LOW ALARM
HIGH ALARM
LOW DEADBAND Sets the range where the relay stays on after the measured value
HIGH
DEADBAND
OFF DELAY
ON DELAY
16 English
Description
ALARM (default)—Sets the relay to on when the measurement value is
more than the high alarm value or less than the low alarm value. FEEDER
CONTROL—Sets the relay to on if a measurement value is more (or less)
than the setpoint value. EVENT CONTROL—The relay toggles if a process
value reaches an upper or lower limit. SCHEDULER—Sets the relay to on
at selected times regardless of the measurement value. WARNING—Sets
the relay to on when there is a warning or error condition. PROCESS
EVENT—Sets the relay to on when the analyzer does a selected operation.
Sets the relay to active (on) or inactive (off) when an error occurs if the
ERROR HOLD MODE setting is set to TRANSFER OUTPUTS. The default
setting is INACTIVE (off). Refer to
YES—Sets the normal condition for the relays to be active (on). NO—Sets
the normal condition for the relays to be inactive (off).
Figure 5)
Description
Sets the value where the relay is set to on in response to decreasing
measured value. For example, if the low alarm is set for 1.0 and the
measured value drops to 0.9, the relay activates.
Sets the value where the relay is set to on in response to increasing
measured value. For example, if the high alarm is set for 1.0 and the
measured value increases to 1.1, the relay activates.
increases above the 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.
Sets the range where the relay stays on after the measured value
decreases below the 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.
Sets a delay time for the relay to be set to off.
Sets a delay time for the relay to be set to on.
Set the error hold mode on page 22.