Toshiba Tosvert VF-S15 Series Instruction Manual page 55


Frequency setting from the computer
Setting range: 0 to maximum frequency (fh)
This frequency command value is enabled only when the frequency command by communication is
enabled. To make frequency commands from the computer valid, set the frequency setting mode
selection parameter (fmod) to RS485 communication (communication No. 0004: 3 (RS485
communication input) or select the "Command priority" option (bit 14 of FA00 : 1 (enabled)). In this
case, frequency commands by communication will be enabled independent of fmod setting.
However, enabled commands and frequencies are given the priority if "48 (49): Forced switching
from communication to local," is set by input terminal function selection (f1o4, f108, f110
to f115).
Once enabled, this frequency setting will be enabled till disable is set (0 setting), power is turned off
or is reset, or factory default setting (typ) is selected.
Set a frequency by communication hexadecimal in Communication Number FA01. (1=0.01Hz (unit))
Example: Operation frequency 80Hz command RS485 communication (PFA011F40)
 Motor speed command setting from the computer
Setting range: 0 to 24000min
The number of motor poles is selected by to f856.
The motor speed command can be set from FA13.
The output frequency is converted from the motor speed command by the following calculation for-
mula.
If the output frequency is more than fh, Inverter return the error to the computer and the motor
speed command is ignored.
Output frequency [0.01Hz] = (Output motor speed [min
This frequency command is enabled only when the frequency command by communication is en-
abled by setting "RS485 communication ("4" for Communication Number 0004) by the speed com-
mand selection parameter (fmod) or setting command priority (Bit 14 of Communication Number
FA00 to "1" (enable)) by the communication command. In this case, frequency command by
communication will be enabled independent of fmod setting. However, enabled commands and
frequencies are given the priority if "48: Forced change from communication to local," "52: Forced
operation," or "53: Fire speed" is set by input terminal function selection (f1o4, f108, f110
to f118).
Once enabled, this frequency setting will be enabled till disable is set (0 setting), power is turned off
or is reset, or standard shipment setting (typ) is selected.
Set a speed by communication hexadecimal in Communication Number FA13. (1 = 1min
Example: f856=2: 4 poles, Speed command is 1800min
60.00 Hz = (1800 min
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com
80Hz=80÷0.01=8000=1F40H
-1
-1
x 4 poles ) ÷ 120
"Communication Number: FA01"
(communication number: FA13)
-1
] x poles [f856] ) ÷ 120
-1
(PFA130708) CR
54
E6581913
CR
-1
(unit))