39
4
4.6.3 Frequency command with sign (FR-A700
series only)
By frequency command with sign, start command (forward rotation/reverse rotation) can be inversed to operate.
Make selection of sign for the frequency command from RWw1.
Relationship between the start command and sign
Parameter Numbers
Name
Initial Value Setting Range
541
Frequency command sign selection (CC-Link)
0
0, 1
Speed setting using
Pr.37
and
Pr.144
Pr.541
Setting
Sign
Setting Range
Actual Frequency Command
Not used
0
Not used 0 to 40000
0 to 400.00Hz
1
With
-32768 to 32767 (two's complement) -327.68 to 327.67Hz
With
0
Not used 0 to 65535
It depends on
Pr.37, Pr.144, Pr.811
.
(in 1 or 0.1 increments)
1
With
-32768 to 32767 (two's complement)
Start command Sign of the Frequency Command
Actual Run Command
Forward rotation
+
Forward rotation
-
Reverse rotation
Reverse rotation
+
Reverse rotation
-
Forward rotation
REMARKS
When
Pr.541
= 1(with sign)
•
When EEPROM write is specified with the RYE, write mode error (error code H01) will occur.
•
When concurrent execution of both RYD and RYE is enabled (when a value other than 0 is set in
Pr.544
) and both
RYD and RYE are turned on, RYD has precedence.
•
When power is turned on (inverter reset), the initial setting status of the sign bit is "positive" and the set frequency
is "0Hz". (EEPROM value is not reflected.)
Note that the operation mode when power is turned on (inverter reset) is PU or external combined operation (
Pr.79
= 1, 3), the set frequency is EEPROM value.
•
When set frequency is written with the instruction code of HED and HEE, the sign of the frequency command is not changed.
•
Setting "1 or 11" in
Pr.811
Set resolution switchover
changes the increments to 0.1 r/min for vector control.
