Fuji Electric FRENIC-Ace series, User Manual

Page: 390 / 788

5.3 Description of Function Codes
5-220
■
Input/output terminal functions
Table 5.3-24 Input Terminal Functions
Terminal
function
Terminal
command
Description
Activate the limit
switch at start point
“LS”
This is used when the inverter corrects the current position data from the
preset position data (Z point) specified by function codes J76 and J77.
When the inverter detects that the Z signal is turned from Low to High first
after the
“LS”
terminal command is turned from OFF to ON, it triggers the Z
point correction.
In any other conditions, the
“LS” terminal command does not produce any
effect.
Start/reset “S/R”
This enables or disables the positioning control.
ON: Enable
OFF: Disable
Switch to the serial
pulse receiving
mode
“SPRM”
This enables or disables the serial pulse receiving mode.
When the serial pulse input shares an input terminal with other functional
pulse inputs (when the positioning control is concurrently enabled with
frequency control with pulse rate input and/or speed control with PG) by
function code setting, the inverter counts input pulses from the PG to
determine the stop position only when the “SPRM” terminal command is
ON.
ON: Enable
OFF: Disable
However, If the serial pulse receiving is exclusively assigned to the digital
input terminal for the PG input, the inverter counts the input pulses for the
stop position, regardless of the “SPRM” status.
Turning the
“SPRM”
ON resets to zero the pulse count (E point data
previously specified by J81 and J82).
Enter the return
mode
“RTN”
Starting the positioning control with the “RTN” terminal command being ON
enables the return mode in which the inverter moves the control object in the
reverse direction while keeping the S and E point data.
Using the
“RTN” enables the reciprocal positioning control; moving from S
to E points and returning from E to S points.
ON: Enable
OFF: Disable
The resets to zero function of the received pulse count (E point specified by J81 and J82), which can be
triggered by turning the SPRM from OFF to ON, is always enabled. Take care not to reset to zero the E
point mistakenly.
When the positioning control is enabled concurrently with the speed control with PG or frequency control
with pulse rate input, the specifications of terminals [XA], [XB], [XZ], [YA], [YB], and [YZ] differ from the
ones listed above. For details, refer to Table 5.3-30 of “

Assignment of PG Terminals When Shared.”