Installation and Connection
page 39
rev. 00 / 12.04.2017
18 Transmitter Connection
18.1 Connection to the Terminal Blocks
All NivuFlow transmitters are equipped with push-in tension clamp terminals. The use of these
push-in tension clamp terminals enables an easy pre-installation of the transmitter.
This allows verifying individual sensors, input and output signals etc. as well as easy transmit-
ter replacement if required.
The tension clamp terminal blocks are suitable for the connection of single-wire and multiple
wire copper cables. These cables are vibration-proof.
Â
Ü
To open the contacts on the tension clamp terminal blocks, use gentle pressure with a slot
screwdriver on the front-side orange elements.
To connect the power supply push-in and screw-type tension clamp terminal blocks are used.
To connect the power supply, use a slot screwdriver with a blade width of 3.0 or 3.5 mm.
Important Note
Unplug and connect the tension clamp terminal blocks only in de-energised condition
disconnected from mains power.
WARNING
Risk of electric shock
Multiple wire cables (strands) of the AC power supply circuit as well as of relay connections
shall be equipped with ferrules featuring an isolated protective collar (plastic ferrule) to avoid
danger due to several protruding wires.
Non-observance may result in personal injuries.
Tension clamp terminal
block
Power sup-
ply
Bus/
Network
Terminals O/I
etc.
Air-US-sen-
sor OCL-L1
wire cross section,
rigid cables in [mm²]
0.2 ... 2.5
0.2 ... 0.5
0.14 ... 1.5
0.2 ... 2.5
wire cross section, fle
-
xible cable in [mm²]
only DC:
0.2 ... 2.5
0.2 ... 0.5
0.14 ... 1.5
0.2 ... 2.5
wire cross section fle
-
xible with ferrule blank
in [mm²]
only DC:
0.25 ... 2.5
0.25 ... 0.5
0.25 ... 1.5
0.25 ... 2.5
wire cross section fle
-
xible with ferrule with
plastic sleeve in [mm²]
0.25 ... 2.5
undefined
0.25 ... 0.5
0.25 ... 2.5
