Set Up Outputs Page - ABB 4690 User Manual

4690 Series
Turbidity systems

8.4 Set Up Outputs Page

IM/4690–EN Rev. A
Set Up Outputs
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Alarm 1 Action
For 'Fail-safe' alarm operation the relay's alarm state must be the same as the power-down state,
(the relay is de-energized).
For high alarm operation the relay must be Energized Below (EB) the alarm set point.
For low alarm operation the relay must be Energized Above (EA) the alarm set point.
The alarm LEDs are lit in the alarm condition.
Select the required alarm 1 action from the following table:
Alarm Action LED Condition
for Input Above
Set Point
EB
EA OFF
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. 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
Using the and keys, set the alarm 1 set point to any value within the selected display span
– see on page 27. The set point value is subject to hysteresis as detailed above.
Display Span
Alarm 2 Action
Note. Displayed only if
Test Cleaner
automatically to Wiper Unit Failed Alarm if
Repeat as for
Alarm 1 Action
Alarm 2 Set Point
Note. Displayed only if
Test Cleaner
automatically to Wiper Unit Failed Alarm if
Repeat as for
Alarm 1 Set Point
Retransmission Type
Using the and keys, select the retransmission current output range required, from 0 to 10,
0 to 20 or 4 to 20 mA.
The current output range is assigned to the selected display span – see
Continued on next page.
LED Condition
for Input Below
Set Point
ON OFF
ON
is not set to YES – see
is set to YES).
Test Cleaner
above.
is not set to YES – see
is set to YES).
Test Cleaner
above.
8 Configuration and Electrical Calibration
Relay Condition Relay Condition
for Input Above for Input Below
Set Point Set Point
De-energized Energized
Energized De-energized
on page 28 (set
Test Cleaner
on page 28 (set
Test Cleaner
on page 27.
Display Span
29