Post-Connection Check - Endress+Hauser Cerabar PMP11 Operating Instructions Manual

Electrical connection
20
6.3.1 Load (for 4 to 20 mA devices )
In order to guarantee sufficient terminal voltage in two-wire devices, a maximum load
resistance R (including line resistance) must not be exceeded depending on the supply
voltage U of the supply unit.
B
1 Power supply 10 to 30 V DC for intrinsically safe device versions
2 R maximum load resistance
Lmax
U Supply voltage
B
6.3.2 Load resistance (for 0 to 10 V devices)
The load resistance must be ≥ 5 [kΩ].
6.3.3 Shielding
You achieve optimum shielding against disturbances if the shielding is connected on both
sides (in the cabinet and on the device). If potential equalization currents are expected in
the plant, only ground shielding on one side, preferably at the transmitter.
When using in hazardous areas, you must observe the applicable regulations. Separate Ex
documentation with additional technical data and instructions is included with all
Ex systems as standard.
6.4

Post-connection check

 Is the device or cable undamaged (visual check)?
 Do the cables comply with the requirements ?
 Do the cables have adequate strain relief?
 Are all the cable glands installed, firmly tightened and leak-tight?
 Does the supply voltage match the specifications on the nameplate?
 Is the terminal assignment correct ?
 If required: Has protective ground connection been established ?
R Lmax
[ ] W
870
435
U
30
10 20
B
[V]
1
U 10V
-
B
2 R max
£
L
23mA
Cerabar PMP11, PMP21, PMP23
Endress+Hauser
A0029452