04/2012 www.krohne.com
15
ALTOSONIC V
ELECTRICAL INSTALLATION
3
Mains connection of the UFC-V (hazardous environment)
Use a 3 wire power cable with PE (protective earth conductor) in accordance with the Ex-
and possible local regulations.
The diameter of the power cable has to be in accordance with the nominal diameter of the
cable clamp.
For connection diagram refer to the addition to these instructions or see table below.
Only the PE conductor (protective earth conductor) shall be connected to the indicated PE
terminal in the signal converter housing.
Terminal
Description
Connect to
24V AC/DC (non SELV) 115 / 230V AC
UFC-V X1 PE
PE
System safety ground
UFC-V X1 N
N
External power supply neutral
UFC-V X1 L
L
External power supply….live
24V AC/DC (SELV)
UFC-V X1 FE
FE
Not connected
UFC-V X1 -
-
External power supply, neutral
UFC-V X1 +
+
External power supply, live
Mains connection of the UFP-V and the I/O rack (non-hazardous environment)
The mains connection terminals of the UFP-V and the I/O modules on the I/O rack are situated
on the back side of the rack. Use a 3 wire power cable with PE (protective earth conductor) in
accordance with local regulations. Only the PE conductor (protective earth conductor) shall be
connected to the indicated PE terminal in the signal converter housing.
Terminal
Description
Connect to
Mains voltage 115 / 230V AC
I/O-rack X10b with IEC socket
UFP-V via the IO-rack
UFP-V X10a IEC inlet
UFP-V I/O-rack X1 PE
PE
System safety ground
UFP-V I/O-rack X1 N
N
External power supply neutral
UFP-V I/O-rack X1 L
L
External power supply live
3.4
Connecting Flow Sensor to Flow Converter
The electrical connection between the Flow Sensor and the Flow Converter is by way of factory-
supplied sensor signal cables: refer to the connection diagrams. Use pre-certified EEx-d cable
glands.
An equipotential bonding shall be made between the UFS-V and the UFC-V. The connection
between the Flow Sensor UFS-V and the Flow Converter UFC-V consists of three sensor cables.
Each cable contains 4 coaxial cables with preassembled SMB connectors. The cables have to be
connected to the Flow Sensor UFS-V through the cable glands to connector X1. All cables are
numbered in the same way as the connector X1 is numbered. The cables must run through the
special shield connector in such way that the shield is connected to the shield connectors (see
picture below).
The shield shall be clamped to the ground rail using the provided connectors. (If applicable, two
of the coaxial cables preassembled with SMB connectors are for spare).
