Toshiba VF-PS1 - Low Torque Detection Signals

E6581386
F-59
6
6.28 Low torque detection signals
 : Undertorque detection selection

: Undertorque detection level during power running

: Undertorque detection level during regenerative braking

: Undertorque detection time

: Undertorque detection hysteresis
• Function
If the torque remains below the level specified with  or  for a period longer than that
specified with , the inverter will be tripped. Then the trip message “” appears.
=: Alarm signal output (No tripping)
With an output terminal function selection parameter, the inverter can be set so as to issue an
undertorque alarm.
The output terminal function number is 142 or 143 (reverse video).
=: Trip signal output
If the torque is found to be below the value set with  or for a period longer than that set
with , the inverter will be tripped. (FL activated under a fault signal)
Title Function Adjustment range Default setting
 Undertorque detection selection
: Alarm mode
: Trip mode


Undertorque detection level during
power running
~ % 

Undertorque detection level during
regenerative braking
~ % 
 Undertorque detection time ~ sec. 
 Undertorque detection hysteresis ~ % 
<Example of operation>
Output terminal function: 142 (Low torque detection
)
= (Alarm output)
Ex.) When outputting low torque detection signals through output terminal OUT1
Title Function Adjustment range Example of setting
 Output terminal function selection 1(OUT1) ~ 
Note:To put out signals to the terminal OUT2, select the parameter .
Time [sec]
 + 

Output torque [%]
Low torque
signal output

ON
OFF
less than

OFF
+When = (tripping), the inverter will trip if low torque lasts for the period of time set with . After
tripping, the low torque signal remains ON.