Indicator Lights; Terminals; Potentially Explosive Environments - Grundfos CU 3 Serie Instrucciones De Instalación Y Funcionamiento

Warning
If the CU 3X2 is used in a manner not
specified by the manufacturer, the
protection provided by the CU 3X2 may be
impaired.
CU 362
1
Fig. 1 Example of CU 3X2
Pos. Description
1 LCD display
Changes to next column in menu
2
structure.
3 Changes to help text.*
4 Goes up in lists.
5 Goes down in lists.
Increases the value of a selected
6
parameter.
Reduces the value of a selected
7
parameter.
8 Goes one display back.
9 Goes back to menu "Status".
10 Saves a value.
11 Green indicator light (operation)
12 Red indicator light (alarm)
Changes the brightness of the
13
display.
* Some help texts apply to the entire display, other
texts to the individual lines of the display.
6
2
3
5
4
6
7
8
9
10
11
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2.1 Indicator lights

The CU 3X2 has one green and one red indicator
light.
The green indicator light is on when the power
supply has been switched on.
The red indicator light is on when the system is in
alarm mode.

2.2 Terminals

13
1
2
3
4
5
0V 12V
6 7 8 9 10
Fig. 2 Back of the CU 3X2
Pos. Description
1 Nameplate
2 Terminals for digital output relays
3 Terminals for analog inputs
4 Service connection
5 Ethernet (RJ45)
6 Voltage indicator
7 Terminals for digital inputs
8 Terminals for backup battery
9 Terminals for CIM module (optional)
10 Cable clamps for GENIbus connections
11 Internal GENIbus connection
12 Terminal for power supply
13 Label for backup battery
14 USB port
For further information, see section
groups.

2.3 Potentially explosive environments

The CU 3X2 must not be installed in explosive
environments, but may be used together with
Grundfos pumps approved for installation in
potentially explosive environments.
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9.12 Terminal