Fuji Electric FRENIC-Multi Series, Instruction Manual

Page: 29 / 40

7-5
Table 7.4 Symbol Details (Continued)
Symbol Name
Function
code
Descriptions
ET
End timer J84
This specifies the waiting time from when the control object stops at E point
until the inverter can receive the next positioning control signal.
After completion of positioning, when this waiting time has elapsed or when
0.5 second has elapsed if ET < 0.5 second, the inverter issues the
"Positioning completed" signal PSET or "Stop point alarm" signal OT .
Turning the run command OFF when the ET is counting interrupts the
counting, so the inverter does not issue PSET or OT .
The inverter ensures that PSET and OT signals are kept ON for at least
100 ms.
7.4.2 Input/output terminal functions
Table 7.5 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 for 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 produces nothing.
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) with function code setting, the
inverter counts input pulses only from the PG for the stop position when the SPRM
terminal command is ON.
ON: Enable
OFF: Disable
If the serial pulse receiving is exclusively assigned to the digital input terminal for
the PG input, however, the inverter counts the input pulses for the stop position,
regardless of the SPRM status.
Turning the SPRM ON zero-clears 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 zero-clear 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 zero-clear 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 Section 7.8
"Assignment of PG Terminals When Shared." (Refer to the description of function code
o01.)