Emotron VSB Series User Manual

Emotron VSB Instruction Manual Chapter 3 Installation and wiring
Disconnect the grounding connection of equipment may avoid this misoperation and/or
faults
 Sensitive equipment and signal lines shall be mounted as far away from drive as possible.
 Signal lines should be provided with shielded layer and reliably grounded. Alternatively,
signal cable could be put into metallic conduits between which the distance shall be no
less than 20cm, and shall be kept as far away from drive and its peripheral devices, cables
as possible. Never make signal lines in parallel with power lines or bundle them up.
 Signal lines must orthogonally cross power lines if this cross inevitable.
 Motor cables shall be placed in thick protective screen like more than 2mm-thick pipelines
or buried cement groove, also, power lines can be put into metallic conduit and grounded
well with shielded cables.
 Use 4-core motor cables of which one is grounded at close side of the drive and the other
side is connected to motor enclosure.
 Input and output terminals of drive are respectively equipped with radio noise filter and
linear noise filter. For example, ferrite common mode choke can restrain radiation noise of
power lines.
3.11.2 Grounding
Recommended ground electrode is shown in the figure below:
Fig. 3-16 Ground
 Use to the fullest extent the maximum standard size of grounding cables to reduce the
impedance of grounding system;
 Grounding wires should be as short as possible;
 Grounding point shall be as close to the drive as possible;
 One wire of 4-core motor cables shall be grounded at the drive side and connected to
grounding terminal of motor at the other side. Better effect will be achieved if motor and drive
are provided with dedicated ground electrodes;
 When grounding terminals of various parts of system are linked together, leakage current
turns into a noise source that may influence other equipment in the system, thus, grounding
terminals of the drive and other vulnerable equipment should be separated.
 Grounding cable shall be kept away from inlet & output of noise-sensitive equipment.
3.11.3 Leakage Current Suppression
Leakage current passes through the line-to-line and ground distributed capacitors at input &
output sides of drive, and its size is associated with the capacitance of distributed capacitor and
变频器
其它设备
PE PE
Drive
Other
Devices
- 33 -

Emotron VSB Series Specifications

General

Brand	Emotron
Model	VSB Series
Category	Controller
Language	English