7
UK
Terminal
Connection
Description
7
IN 2
Process value input 2
8
GND 2
5.2.1 Wiring of the sensors 1...4 (S1...S4) according to the sensor
Sensor input
Usage
S1 S2 S3 S4
VSA
VSP
IEPE
0���20 mA
9
16 20 24
BN
Sensor supply 9 V
Do not use Do not use
Do not use
10 15 19 23
WH
Current input 0���10
mA
WH
current
input
IEPE
Current input
0���20 mA
11 14 18 22
BU
GND
BK GND
GND IEPE
GND
12 13 17 21
BK
Self-test output
Do not use Do not use
Do not use
►
Protect the supply voltage externally (max� 2 A)�
The ground GND of the DC supply is directly connected with the ground
GND of the sensor supply� The SELV criteria must therefore be met for the
DC supply (safety extra-low voltage, circuit electrically isolated from other
circuits, not grounded)�
If the DC circuit is to be grounded (e�g� due to national regulations),
the PELV criteria must be adhered to (safety extra-low voltage, circuit
electrically isolated from other circuits)�
5.3 Connection of the sensors
►
Adhere to the SELV criteria when the sensors are connected so that no
dangerous contact voltages are applied to the sensor or transferred to the
device!
Sensor and diagnostic electronics supply are not electrically isolated�
5.3.1 Monitoring the sensor cable
In case of wire break, short circuit or faulty measuring cell:
• the output [OU 1] provides 22 mA (± 2%) analogue or
