Instruction manual 91/121 V6.3
Commissioning
Overload Time
Minimum Maximum
Units of measure
0.0
60.0
Seconds
Time allowed for motor overload. The elapsed time count starts as the current in the motor exceeds that set by the parameter ”Con-
tinuous service Current“ (see page 36). When the time elapsed exceeds the time set with this parameter, the signaling of “Motor Over-
load Warning” can be associated with a digital output, or can block or limit the drive (see paragraphs below).
Drive Fault
By activating this mode, you can automatically stop the drive, generating a Fault with its alarm on the display (”Motor Overload“
page 74), when the “Motor Overload Warning” signal intervenes. It should be noted that when the alarm intervenes the drive disables,
the motor stops by inertia as for all the other alarms and the digital output DOK shuts down.
Autom. Curr. Lim.
By activating this mode, the drive automatically limits the current in the motor to the value of the parameter ”Continuous service Cur-
rent“ (see page 36) when the “Motor Overload Warning” is reported. The limiter remains active until the current drops below 90 % of
the rated current set.
Motor overtemp
Set of parameters to set the signal or block of the drive in case of overheating of the motor. For further explanations see paragraph
”Motor temperature“ on page 62.
Signal Mode
With this parameter you set the type of signal you want to do when the motor overheats. The motor temperature control is carried out
with a PTC sensor installed inside the motor. The possible selections are as follows:
•
DIG.OUT ONLY: This is the standard setting that was made to have compatibility with previous versions. In this case, when
the motor PTC contact opens (overheated motor), the drive does DO NOT
HING
and continues to operate regularly at infinite
time. On a selectable digital output (see paragraph ”Dig.Op. X source“ on page 44) you can send a signal to the CNC or PLC
so that it can make the necessary decisions for this anomaly: stop the machining or continue for a certain time.
•
DRIVE FAULT: By setting this mode the drive can disable the operation and signal the anomaly outside. As soon as the mo-
tor PTC contact opens (overheated motor) the drive causes a signal to appear on the display (see message ” Warning!!! Motor
overtemp.“ on page 76) and indicates on a selectable digital output (see section ”Dig.Op. X source“ on page 44) the over-
heating of the motor, but continues to operate regularly. From that moment the CNC or PLC must decide whether to stop the
machine or continue the machining; After the time set in the “Drive FLT delay” parameter, the drive locks and disables the
motor, signaling the alarm ”Motor Overtemperature“ and take to the logical level "0" the digital output "DOK”.
Drive FLT delay
Minimum Maximum
Units of measure
0
120
Minutes
This parameter sets the delay with which the drive disable to protect the motor’s overheating. This delay starts when the PTC sensor
installed in the motor opens; when the delay is over, the drive will disable and the motor stops by inertia. The display of the drive dis-
plays the alarm ”Motor Overtemperature“ and the digital output "DOK" is take to the logical level "0”.
Summing block
Group of parameters to verify the value of inputs and outputs from the summation function (see paragraph 5.6.10 on page 67).
Input 1
Minimum Maximum
Units of measure
-100,00
+100,00
%
Percentage value of input 1 of the summing block. This number
follows the associated analog input signal via the appropriate
I/O analog input configuration menu.
Input 2
Minimum Maximum
Units of measure
-100,00
+100,00
%
Percentage value of input 2 of the summing block. This number
follows the associated analog input signal via the appropriate
I/O analog input configuration menu.
Alter Elettronica s.r.l.
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