Instruction manual 91/121 V6.3
Commissioning
Set the maximum current that the motor can withstand during its operation as indicated on the plate or by the motor manufacturer. Too
high a value can cause the motor to overheat and cause a failure.
Note that the above parameter is set automatically equal to the “Continuous service Current" whenever the latter parameter is
changed.
Motor pole
Minimum Maximum
Units of measure
Displayed only with
2
30
n.
Brushless motor
Set the number of poles of the motor as indicated on the plate.
If this data is not written on the motor plate, it can be calculated from the rated frequency and rated speed (if indicated on the motor
plate) using the following formula:
X
=
f
⋅
120
n
n = Nominal speed [RPM]
f = Nominal frequency [Hz]
X = Number to be rounded to the nearest equal to calculate the number of poles
Example:
The motor plate shows the following data: Rated speed = 1532 RPM, Nominal frequency = 53 Hz. With the above formula
X = 4,15 is calculated and rounded to the nearest integer we get that: number of poles = 4.
Maximum speed
Minimum Maximum
Units of measure
100
9000
RPM
Set the maximum speed that the motor must make when the speed reference is at most.
Normally this speed corresponds to the 10Vcc reference on analogue input 1 (AI1) if configuration or scaling has not been changed.
To check the value of the speed reference (analog or digital), you can check the parameter “Diagnostic → Speed Demand” (see page
45) while the drive is enabled and the motor runs regularly. On page 54 paragraph ”Motor speed adjustment“ there is a complete ex-
planation of the precise calibration procedure of this parameter.
If the speed written on the motor plate is expressed in ‘Radiant
s /second’ (Rad/s)
, the following formula may be used to calculate the
corresponding speed in rpm (RPM):
Speed
[
RPM
]=
9,55
×
Speed
[
Rad
/
s
]
..
Feedback Type
Select the type of transducer mounted in the motor, choosing from the available ones:
•
TTL encoder
: always available (input on X4 connector).
•
Resolver
: Selection possible only with optional 01/324 card (input on X14 connector) and brushless motor.
•
Sin-Cos
: Selection possible only with optional 01/325 card (input on X14 connector) and brushless motor.
•
EnDat
: Selection possible only with optional 01/327 card (input on X14 connector) and brushless motor.
•
Tacho Br.
: selection possible only with optional 01/333 card (input on X14 connector) and brushless motor.
•
Tacho 10V
: selection possible only with optional 01/333 card (input on X14 connector) and brushless motor.
•
Tacho
D.C.
: Selection possible only with optional card 01/333 (input on connectorX14b) and DC motor.
NOTE:
The selection of a certain transducer with this parameter involves the appearance or disappearance of some menus de-
pending on the utility or not with the selected transducer (see NOTE on 22 page ”Menu structure”).
Encoder Lines
Minimum Maximum
Units of measure
Displayed only with
100
10000
PPR
TTL encoder, Sin-cos.
Set the number of pulses per turn (ppr) of the encoder mounted in the motor.
Resolver Pole
Minimum Maximum
Units of measure
Displayed only with
2
16
N.
Resolver
Set the number poles of the transducer resolver.
Tachogenerator
Minimum Maximum
Units of measure
Displayed only with
0,01
370,00
V/krpm
Tacho-generator
Set the voltage generated by the tachometer dynamo (brushless, 10V or direct current) when the motor turns at a speed of 1000 RPM.
This data is indicated on the plate of the motor or tachometer dynamo.
Alter Elettronica s.r.l.
37
