Fuji Electric FRENIC-VG Series, Руководство пользователя

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6.11 DI Interface Card OPC-VG1-DI
6.11.1 Product overview
The OPC-VG1-DI option allows use of input including speed settings,
torque commands, torque current commands, and torque limits as 16-bit
digital data.
Two DI interface cards may be installed at once by choosing DIA or DIB
with a switch on each card. In this way, it is possible to perform control
with 16-bit digital input for speed settings and torque limits at the same
time.
(1) Photocoupler
insulation
The input interface uses photocoupler insulation. Signal wires can be
up to dozens of meters long.
(2) Sink/source
The input interface can be switched between current sink output ("sink") and current source output
("source"). Typically, sink interfaces are commonly used in Japan and the U.S. Such interfaces are
characterized by a voltage of 0 V when the signal is active. By contrast, source interfaces are often
used in Europe. In such interfaces, active signals result in a positive voltage. When the PLC
terminal is used with a circuit that manipulates the inverter's built-in digital input terminals (FWD,
REV, X1 to 9), the OPC-VG1-DI cannot be used. Please contact Fuji for more information.
(3) I/O check function
Regardless of whether DIA or DIB has been selected, the state of each input signal can be checked
on the keypad and via the unit's communications interfaces (RS-485, T-link, CC-Link, SX bus,
Fieldbus, UPAC, etc.).
(4) Option function codes
Option function codes allow selection of binary input (0000 0000 0000 0000) or BCD input (7999).
Additionally, functionality for holding data values based on contact input is provided to allow
elimination of variation in the lower bits of digital data when signals are relayed via an external A/D
converter.