25
5 0 0
A1 Setpoint
A1 Action EB
— — — — —
EA
SET UP OUTPUTS
— — — — —
A2 Action EB
— — — — —
EA
A2 Setpoint
1 5 0
RTX Type 4-20
0-20
0-10
— — — — —
.
Hold Outputs NO
— — — — —
0
.
0
Test Retrans
(%)
.
YES
Test Cleaner
set to
YES
6
PROGRAMMING & ELECTRICAL CALIBRATION…
6.4
Set Up Outputs Page
Alarm 1 Action
For 'Fail-safe' alarm operation the relay's alarm state must be the same as the power-down
state, i.e. the relay is de-energized.
For high alarm operation the relay must be
Energized Below
the alarm set point (
EB
).
For low alarm operation the relay must be
Energized Above
the alarm set point (
EA
).
The alarm LEDs are illuminated in the alarm condition.
Select the required alarm 1 action from the following table:
The set point band is defined as the actual value of the set point plus or minus the hysteresis
value. The hysteresis value is
1% of the set points displayed in the
Set Up Parameter Page
– see Section 6.3. Alarm action occurs if the input value is above or below the set point band.
If the input moves within the set point band the last alarm action is maintained.
Alarm 1 Set Point
The alarm 1 set point can be set to any value within the display span selected. The set point
value is subject to hysteresis as detailed above.
Set the alarm set point to the required value.
Alarm 2 Action
Repeat as for Alarm 1 Action above.
Becomes
Failed Wiper
Alarm if
Test Cleaner
is set to
YES
in the
Set Up
Parameter Page
.
Alarm 2 Set Point
Repeat as for Alarm 1 Set Point above.
Retransmission Output Assignment
Select mA current output, from 0 to 10, 0 to 20 or 4 to 20 mA, using the
and
keys.
The current output range is assigned to the display span selected.
Hold Outputs during Calibration
The retransmission and alarm outputs can be held to prevent inadvertent operation during a
calibration procedure.
Select either
YES
or
NO
.
Continued on next page.
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Содержание 4670 Series
Страница 1: ...Turbidity Systems 4670 Series User Guide IM 4670_13 ...
Страница 49: ...47 NOTES ...
Страница 50: ...48 NOTES ...
