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Table 7.2
Built-in type options
Classifica-
Item
tion
Computer interface
BCD code input/12 bit binary input
function
Speed feedback controller
Multi-option
Output for line/inverter switching
printed wiring
Model
VF3X-0887B
Built-in
board
Overload warning output
type
Analog output
Pulse input
7 -speed run and acc./ dec. 1 and 2
runs simultaneous operation
96 times frequency signal output
Output voltage regulator
Model
Order
Cooling fin structure
Model
Order
1)
Multi-option printed wiring board.
A optional printed wiring board is equipped with built-in following functions.
a)
Computer interface
A link with a host computer can be established by using the RS-232C interface, enabling
operation and adjustments to be made from the host computer, as well as monitoring of
inverter status.
b)
BCD code input/12 bit binary input
Operating frequencies can be set with a 3-column BCD code or a 12-bit binary input.
• c)
Speed feedback control
Enables speed feedback control by use of the feedback signals from TG (generator for
Speed meter) and PG (pulse generator). Its control pricision is approximately 0.5% at the
maximum.
d)
Output for line/inverter switching
ON and OFF control signals (open collector) of contactor which are used for switching
between the commercial run and the inverter's run are output.
e)
Overload warning output
A digital frequency meter displays "L" (overload warning) to inform the inverter's output
overloading. To combine with the putout Signals (open collector) externally.
f)
Analog output
Analog signals of current and frequencies can be output.
g)
Pulse input
The pulse input 16 times as many as the inverter's set frequency enable you to set frequency.
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