Current Input - Grundfos Oxiperm OCD-164 Montage- Und Betriebsanleitung

7.3.1 Batch mode
Activating the operation mode "Others"
• In the "Operation mode" menu, switch to the "Others" menu
using the [F1] key.
Batch mode
activated
• Use the [Enter] and [Escape] key to return to the "System
choice" menu.
Ensure that the level contacts of the batch containers
Note are connected and correctly set up. Faulty settings
may result in error messages in the batch mode.
Setting the concentration
• Use the [Escape] key to switch to the "Main menu", display
page 2.
Main menu
1 System choice
2 Basic settings
3 Service mode
• Use the [F3] key to switch to the "Service mode" menu.
Service mode
1 Venting
2 Startup mode
3 Test mode
• In the "Service mode" menu, switch to the "Startup mode"
menu using the [F2] key.
Startup mode
1 Batch concentration
2 Bypass water
3 Start
• Use the [F1] key to switch to the "Batch concentration" menu.
Batch concentration
3.0 g/l ClO
2
The default batch concentration is 3.0 g/l.
Note
• Any concentration in the range of 2 to 3.3 g/l ClO
entered.
• Press the [F1] key to select the concentration input field.
• Enter the value by pressing the [UP] or [DOWN] buttons
(to change the number) and the [LEFT] and [RIGHT] arrow
buttons (to change the input position).
• Press the [Enter] key to confirm the entry.
• Use the [Enter] and [Escape] key to return to the "Startup
mode" menu.

7.3.2 Current input

• In the "Operation mode" menu, switch to the "Current input"
menu using the [F2] key.
Selection
[F1] key
[F2] key
[F3] key
When selecting the [F1] (0-20 mA) key, for example, the display
shows:
Current input
added
Max. flow
0000.0 m³/hb
The quantity (ppm) of ClO added, and the max. flow in the main
2
water line are entered in this menu.
<
>
can be
2
0-20 mA
4-20 mA
Others
0.00 ppm
H O
2
>
The value for the amount of ClO
value", which does not necessarily have to
correspond to a ClO
Note
the system, because the control calculation is unable
to factor in consumption in the solution line.
• Switch to the variable field "0.00" using the [F1] key.
• Use the [UP] and [DOWN] keys to change the numerical
value, and the arrow [LEFT] and [RIGHT] keys to change the
input field.
• Enter the value to be added.
• Use the [F1] key to switch to the variable field "Max. flow H
and enter the max. volume of water.
• Confirm using [Enter] key.
• Use the [Enter] key again to switch to the menu:
Current input
0 g/h =
9 g/h =
The requisite system capacity is now calculated here, relative to
the amount to be added (ppm) and the existing max. flow rate of
H O.
2
Example:
Default quantity of ClO :
2
Main water quantity:
Max. system capacity:
If the calculated system capacity is greater than the
Note size of the system, only the max. possible system
capacity (e.g. 10 g/h) can be dosed.
• Use the [Enter] key to switch to the menu:
Current input
Flow of H O
2
Max
Min
The max. and min. volume of water, which can be supplied with
ClO through the set quantity to be added (ppm), and the
2
installation size are specified in this menu. The system switches
off below the min. water quantity (system capacity < 2.5 %).
• Activate the operation mode using the [Enter] key.
Current input
0-20 mA
activated
• Use the [Enter] key to return to the "Operation mode" menu.
• Press the [Escape] key twice to return to the main menu.
Analogous procedure for "4-20 mA" and the "Others" current
input.
In the case of the "Others" current input, current input signals
between 0 and 20 mA can be variably set.
Basic load setting
Current input
0 g/h =
9 g/h =
Use the [F1] key to switch to the variable field 0 g/h, and set a
basic load.
The basic load depends on the system type. It is
bigger than 2.5 % of the system capacity.
Note
For example, for the system type OCD-164-1000 the
basic load is bigger than 0.25 g/h.
added is a "starting
2
measurement downstream of
2
O"
2
<
0 mA
20 mA
0.3 ppm
30 m³/h
0.3 ppm x 30 m³/h = 9 g/h
<
0 mA
xxx.x m³/h
xxx.x m³/h
<
0 mA
20 mA
27