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Connecting
5.4 Step 3: Connecting terminal box and transmitter
SITRANS F M TRANSMAG 2
30
Operating Instructions, 11/2009, A5E00102775-07
①
Lock nut
②
Clamp
③
Cable shield
④
Threaded bush
Figure 5-7
Remote connection
Terminal Designation
Cable color for sensors with
IP68 degree of protection
5
Magnetic field current 1
brown
6
Magnetic field current
white
7
Potential equalization/PE
green-yellow
Magnetic field
current cable
29
SmartPLUG supply (-5 V)
green
22
Measuring ground
red
23
Electrode 1
brown
24
Electrode 2
white
30
SmartPLUG-supply (+5 V)
blue
55
Reference voltage
black
66
Reference voltage
yellow
Electrode cable
To guarantee the IP67 degree of protection, please use cables with the following external
diameters:
Cable glands M16 x 1.5
6 to 10 mm
Cable glands M20 x 1.5
6 to 12 mm
Cable glands 1/2" NPT
5 to 9 mm
The magnetic power cable must be shielded and fitted with a wire gauge of at least 3 x 1.0
mm
2
. For the Transmag 2 (7ME5034), the cable must be of a suitable dimension for the
connected mains voltage.
The protective conductor must be marked green-yellow, and must be connected such that it
is the last cable to come loose when pulled.
The electrode cable (including the SmartPLUG supply voltage) must also be shielded and
should have a wire gauge of 7 x 0.5 mm
2
, (e.g. LIYCY).