Hitachi SH1 Series Basic Manual page 36

Chapter 2
Operation
No. Work
stage
12 Electrical
Installation
(a) connections
12 Electrical
Installation
(b) connections
12 Electrical
Installation
(c) connections
12 Maintenance Wiring
(d) for use Inspection
12 Installation
Setting
(e) Use
13 Use Operation
14 General General
15 General General

Installation, wiring, and setting work need to be performed by
specialized technicians.

When using the input terminal 024[SET] function, also check
.
the second settings
Target
Residual risk
section
Due to long wiring length, the
insulation of the motor
(D) DANGER
degraded by surge, which
eventually burns the motor.
By a motor is connected to
the different voltage class
(D) DANGER inverter, insulation of the
motor degraded, which
eventually burns the motor.
Due to unstable output
caused by imbalance of power
supply voltage, under voltage,
(D) DANGER extreme voltage drop, aging
of motor, the motor burns,
and eventually the inverter
fails.
The short circuit failure
caused by degradation of
motor insulation, cracking of
aged wires, etc., causes phase
(D) DANGER loss on inverter output, motor
cable, and motor. Driving the
inverter in such a condition
burns the motor, and
eventually the inverter fails.
By performing inappropriate
parameter settings, high
(D) DANGER
current flows in the motor,
causing it to burn.
The stopped motor
(D) DANGER
automatically starts running.
Damage and injury caused by
- DANGER
hidden risks.
Damage and injury caused by
- DANGER failure to obtain additional
information concerning risks.
2-25
Details of harm
If the wiring length exceeds 20m,
shorten the motor wiring length. Or
install the optional LCR filter and
output side AC reactor.
Match the voltage class of inverter
and that of motor.
Check the receiving voltage of
inverter, power receiving method, and
power supply capacity are
appropriate.
Check there is no phase loss by
inspection.
Set appropriate values for parameters
related to motor electronic thermal
function [bC110] to [bC225].
Set appropriate values for the settings
of base frequency, rated motor
voltage, motor constant, load type, DC
braking and control mode.
(representative parameters)
Motor-related parameters:
IM: [Hb102] to [Hb118]
SM (PMM): [Hd102] to [Hd118]
Control mode: [AA121]
Load type selection: [Ub-03]
DC braking: [AF101] to [AF109]
To restart the motor after stopping it
by a function, define it in the system.
Perform risk assessment on the
system, and check that the fail safe
function is incorporated into the
system.
Obtain the latest version of Basic
Guide so that necessary information
can be checked. Communicate
information to the end users as
necessary.
Installation and Wiring
Protective measure
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