NSK MEGATORQUE M-ESB-YSB2020AB300 - Page 9

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1.2. Conditions to Conform With EC Directives
The wiring example shown below should be referred for the conformity to the EC Directives.
Figure 1: Recommendation example for wiring
Resolver
ESB Driver Unit
AC power
source
Protective
ground
Main
power
TB1
Control
power
CN4
CN3
MC1
Noise
filter
MC1
Circuit
breaker
Thermal sensor
(Normally closed)
L
N
L
N
Inside of
control
panel
CN1
N
N
Handy
Terminal
Ferrite
core
(2 turns)
Ferrite
core
(1 turn)
Ferrite
core
(
1 turn
)
Ferrite
core
(1 turn)
YSB Series
Megatorque Motor
Motor
u Environmental conditions
The Driver Unit must be used in the environmental condition of Pollution Degree1 or 2 as specified
on IEC60664-1. The Driver Unit shall be installed into a control panel with the structure that does not
allow penetration of water, oil or dust (IP54).
u Power source
The ESB Driver Unit shall be used in environmental condition of “Over-voltage category III” as
specified on IEC60664-1.
u Circuit breaker
Install a circuit breaker that conforms to IEC standard and UL safety standard between the power
source and the Driver Unit.
u Noise filter
Install a noise filter between the power source and the Driver Unit.
u Ferrite core
Ferrite cores for signal cable shall be set to the power cable, the Motor cable and the sensor cable.
u Protective Grounding
Be sure to ground the protective grounding terminal of the ESB Driver Unit to the protective ground
(PE) of the control panel for a measure against electrical shock