MT6M15962a
© Fuji Electric Co., Ltd. All rights reserved.
3.2 Optocoupler for alarm signal output and temperature warning output
3.2.1 Optocoupler rating
A general-purpose optocoupler can be used but an optocoupler with the following characteristics is
recommended.
• 100% < CTR < 300%
• Single channel type
Example:
TLP781-1-GR rank or TLP785-1-GR rank by Toshiba
Pay attention to safety standards such as UL and VDE.
The reliability and characteristics of these optocouplers are not guaranteed by Fuji Electric.
4-10
3.2.2 Input current limiting resistance
The current limiting resistor for the primary side of optocoupler is built in the X-IPMs.
The resistance is
R
ALM
=1.3kΩ. When the optocoupler is directly connected to
V
CC
=15V, IF flows about
10mA. Therefore, external current limiting resistors are unnecessary.
If a large current
I
out
> 10mA is required for the optocoupler output side, it is necessary to increase the
optocoupler’s CTR value in order to supply the required current.
3.2.3 Wiring between optocoupler and IPM
Note that a high d
v
/d
t
will be applied to the optocoupler for alarm signal output and temperature
warning output, please take the same precautions as in section 3.1.3.
4. Connector
For the
connector’s electrode surface material (plating, etc.), select the same material as the IPM
control terminal plating material.
Connectors that conform to the shape of control terminals of X-IPM are commercially available.
For P630: MA49-19S-2.54DSA and MA49-19S-2.54DSA (01) by Hirose Electric
For P631: MDF7-25S-2.54DSA by Hirose Electric
Furthermore, please contact the connector manufacturer for the details of reliability and use of these
connectors.
Please note that the reliability and the characteristics of these connectors are not guaranteed by Fuji
Electric.
