IMO VXSM75-1 Instruction Manual page 53

Torque polarity [B/D]
The polarity of the torque calculated inside the
inverter is judged and the driving/braking torque
discrimination signal is output.
When the calculated torque is positive/driving,
an OFF signal is output, and when it is
negative/braking, an ON signal is output.
Torque limiting [TL]
When the torque limit is set, a stall prevention
function automatically functions to change the
output frequency automatically; the torque
limiting signal is output externally to reduce the
load or to indicate an excessive load at the
monitor.
The ON signal is output during torque limit,
regeneration avoidance operation and current
limit.
Auto restarting [IPF]
An event of momentary power failure, start-up of
restart mode after momentary power failure,
and automatic synchronization and recovery are
reported to the outside.
When the power
synchronization starts after a momentary power
failure, an ON signal is output, and the signal
changes to the OFF signal after the frequency
before the momentary power failure is achieved.
In the startup at the starting frequency mode,
completion of restart is assumed at the time of
power recovery, and the signal is turned off in
this timing. (Refer to the description for F14.)
Overload early warning [OL]
An overload early warning level before thermal
protection trip (electronic thermal overload
relay) of the motor is judged and an ON signal is
output.
Either the electronic thermal overload forecast
or output current overload forecast can be
selected for overload forecast judgement.
For the setting method, refer to Overload early
warning (Operation selection) (E33) and
Overload early warning (Operation level) (E34).
Note) This function is effective only for motor 1.
Life time alarm [LIFE]
Life judgement output for main circuit capacitor
Refer to section 8-2 (1) "Capacity measurement
of main circuit capacitor" for description.
Frequency level detection 2 [FAR2]
This is a frequency level detection (detection
width) signal where function code E29
"Frequency level detection delay" takes effect.
Detection level of the frequency is detected at
the output frequency before the torque limiter.
5-24
is recovered and
E29 Frequency level detection delay
E30 FAR function signal (Hysteresis)
•
Adjust the hysteresis and signal output delay
for achievement of the output frequency to
the set frequency (operation frequency).
The delay is valid only for FAR2 and it can be
adjusted between 0.01 and 10.0 seconds.
The hysteresis can be adjusted in a range of
0 to +/-10 Hz of the output frequency.
The output frequency changes according to the
torque limiting operation. When the frequency
exceeds the setting range (width), the signal
is turned off in a mode (FAR: E20, 21 set to
"1") or it is not turned off in another mode
(FAR2: E20, 21 set to "9").
E29: Setting range: 0.01 to 10.0 s
E30: Setting range: 0.0 to 10.0 Hz
An ON signal can be output from the terminal
within the detection range (width).
E31
FDT function signal (Level)
E32
FDT function signal (Hysteresis)
•
Determine the operation (detection) level of
the output frequency and the hysteresis width
for operation cancellation. When the output
frequency exceeds the set operation level, an
ON signal can be output from the terminal.
Setting range: (Operation level): 0 to 400 Hz
(Hysteresis width): 0.0 to 30.0 Hz
Selecting Functions