Starting Up The Product; Initial Startup; Electrical Connection; Terminal Connection - Grundfos DID Instrucciones De Instalación Y Funcionamiento

5. Starting up the product

5.1 Initial startup

WARNING
Electric shock
- Switch off the power supply before startup.
- 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.
- Initial startup must be carried out by qualified and
authorised persons.
1. Connect all sensors to the CU 382 control unit. See also
section 6.2 Connecting the sensors to the CU 382 control
2. Slowly open the inlet valve.
3. Check the hydraulic system of the DID for leakages.

6. Electrical connection

6.1 Terminal connection

WARNING
Electric shock
- Switch off the power supply of the DID and all
devices you plan to connect before terminal
connection.
- Terminal connection must be carried out by
qualified and authorised persons.
6.1.1 Connecting the terminals
1. Remove the two cross-head screws on the terminal
compartment of the CU 382 control unit.
2. Open the terminal compartment.
3. Connect the terminals according to the terminal connection
plan.
90...240 VAC
RS485
Valve
Clean in
4/20 #1
4/20 #2
4/20 #3
4/20 ln #1
ln #1
ln #2
Flow #1
RS485
MOD 1
MOD 1
MOD 2
MOD 2
Relay 1
Relay 2
Err
Err
Fig. 3 Terminal connection plan
unit.
90...240 VAC
RS485
12 V Out
GND
4/20 #1
4/20 #2
4/20 #3
4/20 ln #1
4/20 ln #1
ln #1
ln #2
Flow #1
RS485
MOD 1
MOD 1
MOD 2
MOD 2
Relay 1
Relay 2
Err
Err
Description and use of the terminals
Terminal Description
1 Phase
2 Neutral
3 PE
4 PE
5-8 Unused, can be used to connect S::CAN sensors
9 12 V output
Cleaning valve output (provides
10
power for the valve +12 V)
GND, for cleaning valve and
11
external trigger
12 External trigger for cleaning valve
13 4-20 mA output #1 (+)
14 4-20 mA output #1 (-)
15
Shield connections (optional)
16
17 4-20 mA-output #2 (+)
18 4-20 mA-output #2 (-)
19
Shield connections (optional)
20
21 4-20 mA-output #3 (+)
22 4-20 mA-output #3 (-)
Power supply for 4-20 mA input
23
(only for passive sources)
24 4-20 mA-input #1 (-)
25 4-20 mA-input #1 (+)
26 Shield connection (optional)
Digital input #1 (+), relay to switch
27
on/off or as pulse source
28 Digital input #1 (-)
Digital input #2 (+), relay to switch
29
on/off or as pulse source
30 Digital input #2 (-)
Flow #1, flow switch of bypass flow
31
cell, pre-wired in BF1/BF3
Flow #1, flow switch of bypass flow
32
cell, pre-wired in BF1/BF3
33 RS485 A-
34 RS485 B+
35 RS485 GND
36 RS485 shield
37-46 Unused, for later add-ons
Relay 1-NO, switches on/off or
47
provides pulse frequency
48 Relay 1-C, common connector
Relay 2-NO, switches on/off or
49
provides pulse frequency
50 Relay 2-C, common connector
Error relay NO
51
Relay closes on alarm
52 Error relay C, common connector
Error relay NC
53
Relay opens on alarm
Error relay C, common connector,
54
duplication of 52
Use
Power supply
(100-240 V,
50-60 Hz)
Cleaning valve
control
Analog outputs
Analog input
Digital inputs
Flow cell - flow
switch
Modbus to
upper controls
(CU 382 is
slave)
Digital output
(with relays)
Error relay
7