4.4
Electrical connection of Mycom CPM 152
Warning:
•
Only appropriately trained
personnel is allowed to work on
the instrument when the system
is live and is connected to the
mains.
•
A mains disconnection device
must be installed near the
instrument and must be identifed
as the mains disconnecting
device for the CPM 152
(see EN 61010-1).
•
Do not start up the instrument
until a protective wire has been
connected!
•
Before connecting the instrument
to the mains, make sure the
mains voltage matches the
voltage rating on the nameplate!
•
When an instrument with
explosion protection is being
connected, it is vital that the
appropriate regulations are
observed (see chapter 4.4.2).
Caution:
•
All lines conducting signals are
to be shielded according to
VDE 0165 and run separately
from other control lines.
Note:
•
Immunity against interference can
only be guaranteed if the
transmitter is earthed and the
screen ground line is kept as
short as possible (do not solder
an extension onto the screen)!
•
The earthing happend with the
earth terminal or the inner
PE-terminal block
•
If the instrument is being installed
on a post, grounding the post is
also recommended.
Instrument connections
• Undo the four screws in the bottom third of
the front of the housing.
• Remove the cover of the connection
compartment.
• A connection diagram and information
about the specific module connections can
be found folded up in the cover.
• Replace the plugs by additional cable
glands if required.
• Feed the cable through the cable glands
into the connection compartment.
Use metal cable gland for pH- / Redox
signal line.
• Connect the cables in accordance with the
connection diagrams on the following
pages.
• Tighten the cable glands securely to make
sure the connections are provided with the
necessary strain relief.
Warning:
In the non-Ex area, the output
contacts can also be connected to
the instrument’s power supply.
To do this, the thin section provided
in the separating wall on the
connection compartment lid must be
broken out with a pair of pliers.
Now a cable connection between
the right and left parts of the
connection compartment can be
established by attaching the cable
carefully and without forming a loop
in the cable clip provided.
For this purpose the supply
connection has a second terminal
»L« resp. »L+«.
pm152e04.chp
mycom CPM 152
Installation
Hauser
9