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Chapter 4
4.2.64 Over-torque signal (OTQ)
The inverter outputs the over-torque signal when it detects that
the estimated motor output torque exceeds the specified level.
To enable this function, assign function "07" (OTQ: over-torque
signal) to an intelligent output terminal.
This function is effective only when the V/F characteristic curve
selection selected with function "A044" or "A244" is the sensorless vector control, 0Hz-range sensorless vector control,
or vector control with sensor. With any other V/F characteristic curve selection, the output of the OTQ signal is
unpredictable.
When using the inverter for a lift, use the OTQ signal as the trigger to stop braking. Use the frequency-arrival signal as
the trigger to start braking.
Item
Terminal function
Alarm relay terminal function
Over-torque (forward-driving) level
setting
Over-torque (reverse regenerating)
level setting
Over-torque (reverse driving) level
setting
Over-torque (forward regenerating)
level setting
(NOTE)<>:applied for 75 to 150kW
4.2.65 Alarm code output function (AC0 to AC3)
The alarm code output function allows you to make the inverter output
a 3- or 4-bit code signal as the trip factor when it has tripped.
Specifying "01" (3 bits) or "02" (4 bits) for the alarm code output (C062) forcibly assigns the alarm code output
function to intelligent output terminals [11] to [13] or [11] to [14], respectively.
The following table lists the alarm codes that can be output:
Intelligent output terminals
14
13
12
11
AC3
AC2
AC1
AC0
0
0
0
0
0
0
0
1
0
0
1
0
0
0
1
1
0
1
0
0
0
1
0
1
0
1
1
0
0
1
1
1
1
0
0
0
1
0
0
1
1
0
1
0
1
0
1
1
1
1
0
0
Function code
C021 to C025
C026
C055
C056
C057
C058
When "4 bits" is selected
Factor code
Cause of tripping
Normal
Normal operation
E01 to E03,E04 Overcurrent protection
Overload protection
E05, E38
Low-speed overload
protection
Overvoltage/input
E07, E15
overvoltage protection
E09
Undervoltage protection
Instantaneous power failure
E16
protection
E30
IGBT error
Braking resistor overload
E06
protection
EEPROM, CPU, GA
E08, E11, E23
communication, or main
E25
circuit error
E10
CT error
External trip, USP error,
E12, E13, E35,
thermistor error, or braking
E36
error
E14
Ground-fault protection
Invalid instruction in easy
sequence
Nesting error in easy
E43, E44, E45
sequence
Easy sequence execution
command error
Explanation of Functions
Related code
A044/A244/A344: V/F characteristic curve selection,
1st/2nd/3rd motors
C021 to C025: Terminal [11] to [15] functions
C055: Over-torque (forward-driving) level setting
C056: Over-torque (reverse regenerating) level setting
C057: Over-torque (reverse driving) level setting
C058: Over-torque (forward regenerating) level setting
Set value
07
OTQ: Over-torque signal
Threshold level to output the OTQ signal
during forward powering operation
CT mode :
Threshold level to output the OTQ signal
0. to 200. (%)
during reverse regeneration operation
<0. to 180.(%)>
VT mode :
Threshold level to output the OTQ signal
0. to 150. (%)
during reverse powering operation
<0. to 150.(%)>
Threshold level to output the OTQ signal
during forward regeneration operation
C021 to C025: Terminal [11] to [15] functions
C062: Alarm code output
Factor code
Normal
E01 to E03, E04
E05
E07, E15
E09
E16
E30
－
－
－
－
－
－
4-65
Description
Related code
When "3 bits" is selected
Cause of tripping
Normal
Overcurrent protection
Overload protection
Low-speed overload
protection
Overvoltage/input
overvoltage protection
Undervoltage protection
Instantaneous power
failure protection
IGBT error
Other error
－
－
－
－
－
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