Configure The Relays - Hach NA5600 sc Na+ Operations

• BILINEAR function
Option
SET LOW VALUE
SET HIGH VALUE
SET KNEE POINT VALUE
SET KNEE POINT CURRENT Sets the value of the current at the knee point value.

Configure the relays

If a relay(s) in the analyzer is connected to an external device, select the triggers that set the relay to
on (active). The relay status shows at the top-right corner of the measurement screen. Refer to
Figure 3 on page 6.
Note: The Normally Open (NO) and Common (COM) relay contacts are connected when the relay is on. The
Normally Closed (NC) and Common relay contacts are connected when an the relay is off.
1. Enable a relay as follows:
a. Push menu, then select SETUP SYSTEM > CONFIGURE ANALYZER > SETUP OUTPUTS
> RELAY SETUP > [select a relay].
b. Select SELECT SOURCE > [analyzer name].
2. Select an option.
Note: Select SET PARAMETER first, then SET FUNCTION and then ACTIVATION.
Option
ACTIVATION
SELECT SOURCE NONE—Sets the relay to disabled. [analyzer name]—Sets the relay to enabled.
SET PARAMETER Sets the channel represented at the relay.
SET FUNCTION
SET TRANSFER
FAIL SAFE
• ALARM function (refer to
Option
LOW ALARM
HIGH ALARM
Description
Sets the low endpoint (lower value) of the process variable range.
Sets the high endpoint (upper value) of the process variable range.
Sets the value at which the process variable range divides into another linear
segment.
Description
The ACTIVATION options change based on the SET FUNCTION setting. Refer to the
tables that follow to configure the relay.
Note: Do not select a channel that contains the symbol "~" (e.g., 4-~SAMPLE4).
Channels that contain the symbol "~" are not measured.
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 Set the error hold mode
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.
on page 21.
English 15