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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.
Parameter Numbers
541
Speed setting using
Pr.37 and Pr.144
Not used
With
Relationship between the start command and sign
Start command Sign of the Frequency Command
Forward rotation
Reverse 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.
Name
Frequency command sign selection (CC-Link)
Pr.541
Sign
Setting
0
Not used 0 to 40000
1
With
-32768 to 32767 (two's complement) -327.68 to 327.67Hz
0
Not used 0 to 65535
1
With
-32768 to 32767 (two's complement)
+
-
+
-
Initial Value Setting Range
0
Setting Range
Actual Run Command
Forward rotation
Reverse rotation
Reverse rotation
Forward rotation
INVERTER SETTING
0, 1
Actual Frequency Command
0 to 400.00Hz
It depends on Pr.37, Pr.144, Pr.811.
(in 1 or 0.1 increments)
4
39
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