In this case adhere to the distances between the units.
The following applies to identical VS2000 Exi units:
• Distance = 0 mm when operated with U
NOM
(see Technical data / Operating volt-
age).
• Distance = at least 10 mm when operated with U
NOM
+10%.
For units from other companies the permissible distance is to be determined by
measurements.
• Prevent the penetration of conductive or other dirt during installation and wiring.
Mounting of the sensors:
Adhere to the mounting instructions enclosed to the sensor.
4. Electrical connection
The unit must only be connected by a qualified electrician.
Isolate from mains supply before wiring!
Check if the relays are connected to voltages of external power supplies.
The rules and regulations for the installation and operation of electrical equipment
in hazardous areas must be observed.
Terminal connection:
Voltage supply
AC voltage:
According to Technical data (see page 13) / Type label ± 10% at the terminals 18 (L1)
and 17 (N), frequency range 47...63Hz.
DC voltage:
24 V DC ± 10 %, at the terminals 18 (+) and 17 (-).
Page 4
R2
R1
N
L1
L-
L+
AC
DC
15
13
14
16
17
18
21
19
20
1
2
3
7
8
9
2/WH
3/BU
1/BN
4/BK
5/GY
Core colours:
BN = brown, BU = blue, BK = black,
WH = white, GY = grey
R1 = relay flow monitoring
R2 = relay wire monitoring