Endress+Hauser Liquiline CM442R - Page 22

Electrical connection Liquiline CM442R/CM444R/CM448R
22 Endress+Hauser
5.1.3 Connecting the supply voltage for CM444R and the CM448R
L N
+ RD
- BK
*
A0039668
 7 Connecting power supply with BASE2-E
* Assignment depending on power unit, make
sure to connect correctly
85
85
86
86
SD
Display
Sensor supply
+
+
–
Service
PK
GY
PK
GY
1
2
–
+
–
A
B
41
43
42
Alarm
31
31
32
32
0/4 ... 20 mA
+
+
–
–
HART
+
–
A
B
Sensor 2
Ethernet
87
88
97
98
87
88
97
98
BN
WH
GN
YE
BN
WH
GN
YE
Sensor 1
1
2
L/+
N/–
*
Power
L/+
N/–
PE
Power
(internal)
B
A0039624
 8 Overall wiring diagram for BASE2-E and
external power unit (B)
The two device versions may only be operated with the power unit supplied and the
power unit cable. Also pay attention to the information in the operating manual supplied
for the power unit.
NOTICE
Incorrect connection and cable run not separate
Interference on signal or display cable, incorrect measured values or failure of display may
occur!
‣
Do not connect the cable shield of the display cable to PE (terminal strip of device)!
‣
Run the signal/display cable in the control cabinet separately from live (current-carrying)
cables.