4
ELECTRICAL CONNECTIONS
44
OPTISWIRL 4200
www.krohne.com
02/2022 - 4003930810 - MA OPTISWIRL4200 R10 en
4.2 Connecting the signal converter
Steps for connecting the signal converter:
•
Unscrew the housing cover
1
of the electrical terminal compartment.
•
Feed the connection cable through the cable entry in the housing.
•
Connect the cable according to the terminal diagrams below.
•
Connect the grounding to the terminal
7
. Alternatively use the ground terminal
8
on the
connection piece between the flow sensor and the signal converter.
•
Tighten the cable glands.
•
Turn the housing cover and gasket back onto the housing and tighten it by hand.
DANGER!
All work on the electrical connections may only be carried out with the power disconnected.
Take note of the voltage data on the nameplate!
INFORMATION!
When using the binary output M1...M4 as pulse output and frequencies above 100 Hz, shielded
cables are to be used in order to reduce effects from electrical interferences (EMC).
Figure 4-1: Connecting the signal converter
1
Open the housing cover of the electrical terminal compartment using the key
2
Signal converter supply and 4...20 mA loop
3
4...20 mA current input, - external transmitter, optional
4
Terminal M1 binary (high current)
5
Terminal M3 binary (NAMUR)
6
Terminal M2/4 binary, common minus connection
7
Ground terminal in housing
8
Ground terminal on connection piece between flow sensor and signal converter
INFORMATION!
Both grounding terminals
7
and
8
are equally effective from a technical point of view.
INFORMATION!
Ensure that the housing gasket is properly fitted, clean and undamaged.
Before closing the housing cover refer to Maintaining the O-rings on page 101.
