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8. Commands and monitoring from the computer
Across the network, instructions (commands and frequency) can be sent to each inverter and the
operating status of each inverter can be monitored.
8.1. Communication commands (commands from the computer)
■ Communication command (Communication number: FA00)
Commands can be executed on inverter frequencies and operation stop through communications.
The VF-S11 series can enable command and frequency settings through communications irrespec-
tive of settings of the command mode (
) and frequency mode (). However, if “48:
Forced change from communication to local,” “52: Forced operation,” or “53: Fire speed” is set by in-
put terminal function selection (
to ), a change to a command other than communica-
tion and to a frequency command is feasible through a contact on the terminal board.
Once the communication command (FA00) is set to enable communication command priority and
frequency priority, both priorities will be enabled unless OFF is set, power is turned off or is reset, or
standard shipment setting (
) is selected. Emergency stop, RY terminal output hold and OUT
terminal output hold are always enabled even though communication command priority is not set.
Table 1 Data construction of communication commands (communication number: FA00)
bit Specifications 0 1 S7 S9/nC1/S11 Remarks
0 Preset speed operation
frequencies 1
9
1 Preset speed operation
frequencies 2
2 Preset speed operation
frequencies 3
3 Preset speed operation
frequencies 4
Preset speed operation is disabled or
preset speed operation frequencies (1-
15) are set by specifying bits for preset
speed operation frequencies 1-4.
(0000: Preset speed operation OFF,
001-1111: Setting of preset speed
operation frequencies (1-15))
9
Preset speed operation can be
disabled or a preset speed op-
eration frequencies (1-15) can
be specified by combining 4 bits
variously.
4 Motor selection (1 or 2)
(THR 2 selection)
Motor 1
(THR 1)
Motor2
(THR2)
- 9 THR1 : PT=set value, vL, vb, tHr
THR2 : PT=0, F170, F172, F173
5 PI control Normal operation PI OFF - 9
6 Acceleration/deceleration
pattern selection (1 or 2)
(AD2 selection)
Accelera-
tion/deceleration
pattern 1 (AD1)
Accelera-
tion/deceleration
pattern 2 (AD2)
9
9 AD1 : ACC, DEC,
AD2 : F500, F501
7 DC braking OFF Forced DC braking
9
9
8 Jog run OFF Jog run
9
9
9 Forward/reverse run
selection
Forward run Reverse run
9
9
10 Run/stop Stop Run
9
9
11 Coast stop command Standby Coast stop
9
9
12 Emergency stop OFF Emergency stop
9
9 “E” trip
13 Fault reset OFF Reset
9
9 No data is returned from the
inverter.
14 Frequency priority selec-
tion
OFF Enabled
9
9 Enabled regardless of the set-
ting of
15 Command priority selec-
tion
OFF Enabled
9
9 Enabled regardless of the set-
ting of
Note: For the reset command, no data will be returned.
Ex.: Forward run: (PFA008400) CR
1 is specified for bit 15 (communication command: enabled) and bit 10 (operation command).
BIT15 BIT0
1000010000000000
Ex.: Reverse run: (PFA008600) CR, (PFA00C600) CR
8600H : To disable frequency instructions from the computer
C600H : To enable also frequency instructions from the computer
FA00:
004
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