Hitachi Sewing Machine SJ700B Manual De Usuario

Field replacement of cooling fan(s) and DC bus capacitors 

can be accomplished in a fraction of the time. 

Using Logic terminal move to SJ700 without wiring change.

Read SJ300 Parameter by SRW remote operator and write 

them in to SJ700

Allows display of only parameters changed from default.

CE, UL, c-UL, C-Tick approvals.

Input voltage 240V for 200V class and 480V 

for 400V class as standard.

A serial RS-485 Modbus-RTU port is standard.

The SJ700 can communicate with DeviceNet, 

PROFIBUS-DP, and other networks with communication 

options.

-DeviceNet is a trade mark of Open DeviceNet Vender Association, Inc. 

-PROFIBUS-DP is a registered trade mark of PROFIBUS Nutzer 

Organization

Design lifetime 10 Years or more for DC bus capacitors & 

Cooling Fan.

Cooling Fan ON/OFF control function for longer fan life.

*Ambient temperature: Average 40 deg C (SJ700B: 30 deg C)

 (no corrosive gases, oil mist or dust)

Design lifetime is calculated, and not guaranteed.

Perform preventive maintenance before a failure occurs 

using the Lifetime Warning function.

DC bus capacitor, cooling fan, heat sink temperature and 

motor temperature can be monitored in order to replace 

components prior to failure.

Easy-removable

DC bus Capacitors

(SJ700: above 15kW

  SJ700B: above 18.5kW)

Easy-removable 

Cooling Fan

SJ300series

SJ700series

Parameter 

read write

Removable Control circuit terminals

(Move to SJ700 without rewiring)

-The direct input of function code selection is possible rather 

than scrolling through the list.

-Holding down the function key for 3 seconds, causes the 

display to jump to output frequency monitor (d001) mode 

from any menu location.

Basic display mode for commonly used parameters.

Display of up to 12 User Defined Parameters U001 to U012.

Basic

mode

Chose Basic

Parameter

Indication only 

Basic Parameter

Motor terminal voltage

E=650V, cable=100m

EU RoHS compliant 

(except solder in power module)

Varnish coating of internal PC board & plating of main circuit 

copper bus bar are standard.

The SJ700 ignores instantaneous power failure when power 

fluctuation happens frequently, as long as DC bus voltage 

remains higher than under-voltage trip level.

Shuts down the inverter by hardware, bypassing 

the CPU, to achieve a reliable, emergency stop function.

Helps simplify external circuits.

Motor frequency match restart function operates 

effectively even without motor residual voltage.

The SJ700 (SJ700B) outputs a disconnection signal when 

frequency command through analog input is lost.

The curve shape (five kinds, such as S-curve, etc.) can be 

chosen according to the application requirements.

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 for Frequency reference or PID 

feed back signal, with SJ-FB (speed feed back card option).

Input electric power (kW) and Integrated input electric 

power for monitoring energy saving.

The SJ700 detects motor current and automatically reduces 

carrier frequency according to the current.

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))

Simple & Low cost wiring, Ease of installation and replacement

*1 Control circuit terminals comparison table

Series

Input terminals

SJ700

SJ700B

SJ300
L300P

Output terminals

5terminals

(Open collector outputs)

2terminals

(Relay outputs)

9terminals

(Intelligent 8terminals,FW)

6terminals

(Intelligent 5terminals,FW)

3

4