Chapter 6 - Parameter Description [I/O]
6-51
I/O-74: FDT (Frequency Detection) Level
I/O-75: FDT Bandwidth
These functions are used with I/O-76-79 [Multi-
function Auxiliary Contact Output] when set to FDT-#.
See [FDT-#] in I/O-76~79.
I/O-76~79: Multi-function Auxiliary Contact Output
mode 1, 2, 3, 4 define (Ax-Cx)
Terminals A1-C1, A2-C2, A3-C3, and A4-C4 are Form
A relays that are programmable to the functions listed
in the table below. The auxiliary contact will close
when the defined condition has occurred. Each
terminal can be programmed to a different function. In
the following descriptions AX-CX is used to represent
any one of the relay output terminals.
LCD
Setting Range
Description
None None
FDT-1
Reference frequency detection
level – (At speed)
FDT-2
Specific frequency level
detection
FDT-3 Frequency detection bandwidth
FDT-4
Frequency detection 1 with
contact closure
FDT-5
Frequency detection 2 with
contact closure
OL Overload detection
IOL Inverter overload detection
Stall Stalling
LCD
Setting Range
Description
OV Over voltage detection
LV Low voltage detection
OH Inverter overheat detection
Lost Command Lost command detection
Run Inverter running detection
Stop Inverter stop detection
Steady Steady speed detection
INV line
Exchange signal outputs
COMM line
Search Speed search mode detection
Ready Drive ready detection
MMC Used for MMC operation
OH Warn
Over Heat Warning–See FUN-
80, Over Heat Warning Level
FAN Signal Closes when Fan On-See I/O-84
RMT Status Closes when in Remote Control
[FDT-1]
When the output frequency reaches the reference
frequency (target frequency), AX-CX terminal is
CLOSED.
Detecting Condition: Value (Ref. Freq-Output Freq)<=
Freq Detection Bandwidth (I/O-75)/2
AX-CX configured as ‘FDT-1’
*AX: A1~A4, CX: C1~C4
I/O►
FDT freq
74 30.00 Hz
Factory Default: 30.00 Hz
I/O►
FDT band
75 10.00 Hz
Factory Default: 10.00 Hz
I/O►
Aux mode 1
76 None
Factory Default: None
AX-CX
CLOSED
Output Frequency
Time
Time
I/O-75/ 2
Ref. freq
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