Environmental Friendliness - Hitachi SJ700 Series Manual

Global standards
Conformity to global standards
CE, UL, c-UL, RCM approvals.
Logic input & output Terminal
apply sink & source logic
Wide Input power voltage range
Input voltage 240V for 200V class and 480V
for 400V class as standard.

Environmental Friendliness

Micro Surge Voltage suppress
function
Hitachi original PWM control method limits motor terminal
voltage to less than two of inverter DC bus voltage.
Lower than Hitachi motor Max. insulation voltage (1,250V)
(During regeneration, the motor terminal voltage may exceed the motor
maximum insulation voltage (1,250V))
Motor terminal voltage
1,250V
E=650V, cable=100m
EU RoHS compliant
EU RoHS compliant
(except solder in power module)
Improvement of environment
Varnish coating of internal PC board & plating of main circuit
copper bus bar are standard.
Versatile Functions
Instantaneous Power Failure
Disregard Function
The SJ700 ignores instantaneous power failure when power
fluctuation happens frequently, as long as DC bus voltage
remains higher than under-voltage trip level.
Emergency stop
Shuts down the inverter by hardware, bypassing
the CPU, to achieve a reliable, emergency stop function.
Intelligent input terminal and output
terminal ON/OFF delay function
Helps simplify external circuits.
Active frequency matching function
Motor frequency match restart function operates
effectively even without motor residual voltage.
Controlled deceleration and stop
on power loss
Analog Input Disconnection
Detection Function
The SJ700 (L700) outputs a disconnection signal when
frequency command through analog input is lost.
Acceleration/ Deceleration curve
functions
The curve shape (five kinds, such as S-curve, etc.) can be
chosen according to the application requirements.
Analog Command Holding
Function (AHD)
Output frequency can be changed with UP/DOWN Function,
or with an analog signal as reference value. The set
frequency at power shutdown can be saved, too.
Pulse train input function
Pulse train input for Frequency reference or PID
feed back signal, with SJ-FB (speed feed back card option).
Integrated Input Electric Power
monitor
Input electric power (kW) and Integrated input electric
power for monitoring energy saving.
Automatic Carrier Frequency
Adjustment Function
The SJ700 detects motor current and automatically reduces
carrier frequency according to the current.
The resolution of analog outputs
(voltage, current) is improved to 10 bits.
Hitachi Industrial Equipment
Systems Co., Ltd. NARASHINO
division is certified for ISO 14001
(standard of environmental
management system) and ISO
9001 (standard of quality
assurance management system).
JQA-1153
JQA-EM6974
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