While the J-DG supports 12-bit data input, 16-bit data input is possible with the SJ-DG.
When replacing J-DG with SJ-DG, match upper bit (MSB) and short lower 4 bit to the D4
terminal or input the same data as in D4.
D10 D11 D5
D8
D4
D9
D3
D7
D6 D2 D1
D10 D12 D11 D5
D8
D4
D15 D13 D9 D3
D7
D6 D14
D2 D1
SJ-DG
D0
D0
J-DG
Figure 16
Wiring when replacing
(6) J-CM (Communication PCB)
SJ300 has RS-485 serial communication interface as standard.
Item J-CM (J300) SJ300
Interface RS-485 1 port (Terminal) 1:N (Maximum 32 stations)
Communication
mode /
Synchronization
Half duplex / Synchronization
Transmission
speed
300/600/1200/4800/9600bps 2400/4800/9600/19200bps
Transmission
distance
Maximum 250m
Start convention One-way start from host device command
Chart 11
Communication method comparison chart
(7) J-HR (High resolution analog input PCB)
The SJ300 has analog input filter function as standard. With this function, the inverter can
operate by the input from O, O2, and OI terminal with the precision equivalent to that of J-HR.
Function code Setting Range
A016
Range n=1 to 30,
Where n = number of samples
for average
Chart 12
SJ300 analog input filter
It becomes equivalent to J-HR by increasing the filter setting to the maximum value of 30.
Calculation time of 10ms to 60ms is required for the filter setting of 1 to 30.
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