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SJ300 Inverter
Motor Control
Accessories
5–5
Expansion Cards The SJ–FB Encoder Feedback Board installs in
the inverter’s expansion bay, which can accept
up to two expansion cards. The encoder card
accepts two-channel incremental encoder
signals. Position feedback is essential for certain
torque-control algorithms, and is useful for
improving low-speed performance. The card can
also generate linear acceleration/deceleration
ramps for velocity control.
All wiring associated with this card connects to
its PWB connectors as shown. Some related
signals may be assigned to the intelligent I/O
terminals, as described in Chapter 4. For more
information, refer to the SJ–FB manual.
The SJ–DG Digital Input Card installs in the
inverter’s expansion bay. This card accepts up to
eight digital input signals, in addition to the intel-
ligent inputs on the inverter’s control terminal
connector. All wiring associated with card
connects to its PWB connectors as shown.
The SJ–DN DeviceNet Interface Card (not shown) installs in the inverter’s expansion bay. It
connects directly to a DeviceNet network. Inverter parameters P044 to P049 configure the card.
Only one DeviceNet card may be installed in an inverter. For more information, please refer to
the DeviceNet Expansion Card Instruction Manual.
PWB connector
to external wiring
SJ–FB Encoder Feedback Card
PWB connector
to external wiring
SJ–DG Digital Input Card