Connections; Grounding - Toshiba Tosvert-130 Installation Manual

2. Connections

2.1 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. A ground connection with an impedance of less than 100Ω should be
used. Please be sure to consider the following points for making proper ground connections:
Grounding method checkpoints
1) Make solid ground connection to the 'E' terminial on the inverter.
2) Ensure that the metal stand-off which is located near the ModBus+ connector has a good
mechanical connection to the chassis of the inverter as well as to the option card.
3) Use copper wire with a cross-sectional area of 2mm
sectional area of 2.6mm
2
or larger for grounding.
8
2
or larger, or aluminum wire with a cross-