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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
