Connecting The Sensors To The Cu 382 Control Unit; Connecting The Valve For Automatic Cleaning; Connecting Further Inputs And Outputs; Connecting The Cu 382 To The Power Supply - Grundfos DID Montage- Und Betriebsanleitung

6.2 Connecting the sensors to the CU 382 control unit

All sensors for the DID have plugs.
Sensors for immersion have fixed cables with plugs.
1. Make sure that the sensor plug and the socket of the CU 382
control unit are dry and clean.
– Otherwise communication errors may occur and the DID
might be damaged.
2. Connect the sensor to a compatible socket on the CU 382
control unit using the connection cable provided.
3. Cover the connectors that are not used with protective caps.

6.3 Connecting the valve for automatic cleaning

Only DID with sensor for tank immersion with valve for automatic
cleaning:
• Connect the valve to terminals 10 ("Valve", "12 VDC") and 11
(GND). See fig. 3.
• If an external cleaning signal is used, connect the signal line to
terminal 12 ("Clean In", minimum 5 V).

6.4 Connecting further inputs and outputs

Observe the supplier manuals when connecting actuator devices,
such as dosing pumps or regulators.

6.5 Connecting the CU 382 to the power supply

WARNING
Electric shock
- Switch off the power supply before connecting the
CU 382 control unit.
- IP65 only applies, if the housing cover and the
terminal compartment of the CU 382 are properly
closed, and the appropriate cable glands or
dummy caps are fitted.
- Electrical connection must be carried out by
qualified and authorised persons.
• Install an earth leakage circuit breaker for the power supply.
• If the installation is in an area prone to lightning strikes, install
surge protection.
• Use an AC power supply with an earthed conductor wire.
– PE: protective earth
• Connect the process medium (e.g. waste water) to the same
earth ground with less than 0.5 Ohm.

6.6 Start-up of the operating software

If the CU 382 control unit is connected to the power supply, it
starts up and shows the s::can logo for 5 seconds. At first start-up
or if the internal settings have been reset to default, the CU 382
control unit starts with the selection of the language. See also
Select language...
section 9.4.7
After this, the parameter screen is shown and the most recent
information is displayed.

6.7 Sensor initialisation

Every sensor that is connected to the CU 382 control unit must be
installed and initiated individually. This can be done using the
software-supported initialisation process.
• Connect only the sensor you want to initialise to the CU 382.
– An individual address is allocated to the initialised sensor.
If no sensor was connected before, the CU 382 jumps into the
"Add s::can Sensor..." menu to check for connected sensors,
right after setting the language.
8
.

7. Storing and handling the product

• Before storing the DID, empty all pipes, hoses and flow cells,
remove the sensors and pack them separately.
• Observe the permissible ambient conditions. See section
12. Technical data.
• Do not expose the DID to strong impact, mechanical loads or
vibrations.
• Keep the DID away from corrosive substances, vapours of
organic solvents, nuclear radiation and strong electromagnetic
radiation.
• Use the original packaging or equivalent to protect the DID
during storage.