CUM 750 / CUS 70
Electrical connection
Hauser
15
4.3.4 Switch contacts connection
The measuring system is designed to control up to four relays.
Connection is by means of two 6-pin PHOENIX plug-in connectors (for two relays).
Connecting the X3 terminal block
Pin No.
Description
1
Relay 1 NO contact (NO)
2
Relay 1 NC contact (NC)
3
Relay 1 common (C)
4
Relay 2 NO contact (NO)
5
Relay 2 NC contact (NC)
6
Relay 2 common (C)
Connecting the X4 terminal block
Pin No.
Description
1
Relay 3 NO contact (NO)
2
Relay 3 NC contact (NC)
3
Relay 3 common (C)
4
Relay 4 NO contact (NO)
5
Relay 4 NC contact (NC)
6
Relay 4 common (C)
4.3.5 Connecting the pumps
The measuring system is designed to control up to two pumps.
They are connected by means of two 4-pin PHOENIX plug-in connectors.
Connecting pumps 1 – 2
Pumps 1 and 2 are connected via the terminal blocks X5 and X6 in the transmitter.
There is one pump connection (X5) with the One channel version and two pump connections
(X5 and X6) with the Two channel version.
Connecting the X5 terminal block (Pump 1)
Pin No.
Name
Description
1
L
Phase
2
N
Neutral
3
PE
Pump 1 earth
4
PE
Instrument protective
earth
Connecting the X6 terminal block (Pump 2)
Pin No.
Name
Description
1
L
Phase
2
N
Neutral
3
PE
Pump 2 earth
4
PE
not connected
