Appendix - Hitachi L700 SERIES Instruction Manual

Upgrading from the L300P Series
The SJ300 series inverter is upwardly compatible with the L700 series inverter. Therefore, you can:
- mount the control circuit terminal block board of the L300P series in the L700 series without removing the
connected cables,
- copy the parameter settings from the L300P series into the L700 series, and
- use the option boards mounted in the L300P series for the L700 series without removing the connected
cables.
(1) Control circuit terminal block board
You can mount the control circuit terminal
block board of the L300P series into the
L700 series. Note, however, that the
backing plate is incompatible.
(Procedure for replacing the control circuit
terminal block board)
As shown in the figure on the right, the
fixing screw locations on the control circuit
terminal block board are common to the
L300P and L700 series.
To remove and install the control circuit
terminal block board, follow the steps 1) to
5) described below.
Precautions:
Use care to prevent the control circuit terminal block board from twisting when removing or mounting it.
Otherwise, the board guide pins and connector pins may be damaged.
Do not pull the cables connected to the control circuit terminal block board when you remove the
board from the L300P series.
Do not forcibly insert the board into the mounting slot. Make sure that the board is correctly fitted onto
the board guide pins and the connectors are correctly fitted to each other.
L300P series
Removing the control circuit terminal block board from the
L300P series
1) Remove two fixing screws from the control circuit terminal
block board.
2) Pull the control circuit terminal block board straight toward
you to remove it from the L300P series.
Precautions:
Pull out the board slowly.
Be careful not to bend the connector pins.
Be careful not to break the board guide pins.
Control circuit terminal block board mounted in the
L300P/L700 series (front view)
Fixing screw (M3) x 2
Board guide pin
Connector
Fixing screw
(60 poles)
L700 series
Mounting the removed control circuit terminal block board in
the L700 series
3) Remove the original control circuit terminal block board
from the L700 series beforehand (as instructed in steps
1) and 2)).
4) Insert the control circuit terminal block board removed
from the L300P series straight into the slot along the
board guide pins and connector pins until it touches the
fixing-screw seats.
Precautions:
Push in the board slowly.
Be careful not to bend the connector pins.
Be careful not to break the board guide pins.
5) Secure the control circuit terminal block board with two
fixing screws.
Precaution:
Be sure to fix the board with the two fixing screws.
A - 1

Appendix

Board guide pin x 2
Board guide pin
Fixing screw