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4. Grounding
Grounding is of particular importance for reliable, stable operation. Communication
system characteristics may vary from system to system, depending on the system
environment and grounding method used. The PBDP-110 Profibus interface is
provided with a “Shield GND” terminal on the bottom of the unit. The “Shield GND”
terminal is directly connected to the metallic housing of the DB9 connector, which
should in turn be connected to the shield of the Profibus network cable through the
Profibus connector. To ground the network cable shield, therefore, connect a wire to
the Shield GND terminal, and then connect the other end of the wire to an
appropriate ground. For specific requirements regarding protective grounding and
the Profibus network, refer to the Profibus Standard (EN 50 170, part 1).
Please be sure to consider the following general points for making proper ground
connections:
Grounding method checkpoints
1. Make all ground connections such that no ground current flows through the case
or heatsink of a connected drive.
2. Do not connect the PBDP-110 Shield GND terminal to a power ground or any
other potential noise-producing ground connection (such as a drive’s “E”
terminal).
3. Do not make connections to unstable grounds (paint-coated screw heads,
grounds that are subjected to inductive noise, etc.)
5. Environmental Specifications
Item
Specification
Operating Environment
Indoors, less than 1000m above sea level, do not
expose to direct sunlight or corrosive / explosive gasses
Operating Temperature
-10 ∼ +50°C (+14 ∼ +122°F)
Storage Temperature
-40 ∼ +85°C (-40 ∼ +185°F)
Relative Humidity
20% ∼ 90% (without condensation)
Vibration
5.9m/s
2
{0.6G} or less (10 ∼ 55Hz)
Grounding
According to EN 50 170, part 1
Cooling Method
Self-cooled