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Hitachi SJ Series - Page 23

Hitachi SJ Series
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2-4
Chapter 2
Handling of This User’s Guide
*Alphabetical order
C
Name Description
CE logo
A logo used on the product that meets the
requirements of the applicable EC directives.
This is required for products sold within the
European Economic Area.
E
Name Description
EMC
Electromagnetic compatibility
Properties that neither cause errors in other
equipment nor cause errors due to noise.
I
Name Description
IGBT
Insulated gate bipolar transistor
One of switching devices of the inverter.
IM Induction motor
I/O Input/Output
L
Name Description
LAD
Lead to acceleration and deceleration.
Accelerate or decelerate the motor.
LD rated
Low duty: A type of load rating that indicates
overload capacity. This can drive a higher
current motor than ND but has a relatively
lower overload capacity. This can be used
for low load capacity.
M
Name Description
MFG No. Manufacturing No.
N
Name Description
ND rated
Normal Duty: A type of load rating that
indicates overload capacity. Generally this is
used in severe load conditions.
P
Name Description
PLC
Programmable logic controller
PMM
Permanent magnet synchronous motor
PM motor.
PM stands for permanent magnet.
PWM
Pulse Width Modulation
Pulse output method of the inverter.
R
Name Description
RTU
Remote terminal unit.
The Modbus protocol name here.
S
Name Description
SM
Synchronous motor.
PMM is a type of SM.
U
Name Description
UL
standards
Standards issued by Underwriters
Laboratories (Board of Fire Underwriters).
V
Name Description
VLD rated
Very low duty: A type of load rating that
indicates overload capacity. This can drive a
higher current motor than LD but has a
relatively lower overload capacity. This can
be used for lower load capacity than LD.

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