Grundfos Conex DIA-1 Montage- Und Betriebsanleitung Seite 40

Setting the alarm values
1. Select the line "alarm values" using the [Up] and
[Down] buttons. Press [OK] to switch to the
"alarm on/alarm off" submenu.
– If "alarm off" is selected, the device will return
to the "alarm" menu if [OK] is pressed.
2. Press [OK] to switch to the "alarm on/alarm off"
submenu.
Setting the upper and lower switching point
(limits)
1. Select the line "alarm value 1" or "alarm value 2".
Press [OK] to confirm and switch to the desired
menu.
alarm value 1
0.00 mg/l
switching point1
2. Set switching points between 0 and the upper
limit of the measuring range defined earlier using
the [Up] and [Down] buttons (in the unit of the
measured value, the resolution depends on the
selected measuring value and measuring range).
See section 8.4 Measuring
3. Press [OK] to switch to the "eff. direction" menu.
Options: alarm message in the event of
upward/downward violation of the selected switching
point.
4. Select the desired line using the [Up] and [Down]
buttons.
5. Press [OK] to return to the "alarm values" menu
automatically.
6. Select the line "hysteresis" in the "alarm values"
menu, and press [OK] to switch to the
corresponding submenu.
alarm values
0.00 mg/l
hysteresis
7. Set the hysteresis to a value between 0 and half
of the measuring range using the [Up] and
[Down] buttons.
The hysteresis ensures that the relays switch less
frequently in the event of upward or downward
violation of the limits.
40
ranges.
8. Press [OK] to return to the "alarm values" menu.
9. Select the line "alarm delay" in the "alarm values"
menu, and press [OK] in the corresponding
submenu.
alarm values
0 sec
alarm delay
10. Set the alarm delay to a value between 0 and 300
seconds using the [Up] and [Down] buttons.
11.7.1 Dosing time monitoring
This function can be used to monitor the dosing
process (exception: three-position controller). If the
dosing flow remains at a constant level of 100 %
during a selected period, an alarm message is
triggered.
dos.time monit.
10 min
max. dosing time
1. Select the line "dos.time monit." in the "alarm"
menu, and press [OK] to switch to the
corresponding submenu.
In the "dos.time monit." menu, the monitoring
function can be switched on or off.
• If "off" has been selected, the device returns to
the "alarm" menu.
• If "on" has been selected, the "dos.time monit."
submenu is displayed.
2. Set the maximum dosing time to a value between
0 and 600 minutes using the [Up] and [Down]
buttons.