Lenze IMSS500+ Simple Servo 500 600 i1000 User Manual

Page 42

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SimpleServo 500/600/i1000 User Manual Rev 3.4

Note
The motors that are entered in this database should have Nominal Bus Voltage between

90 V and 340V. Do not enter motors with terminal voltages below 90 V.



Mechanical constants tab.

Rotor Moment of Inertia (Jm).

Must be set for moment of inertia (not inertia!) in kilogram-meters squared (kg-m

2

). The rotor

moment of inertia for many motors will be given in English units such as pound-inches squared
(lb-in

2

) or ounce-inches squared (oz-in

2

). These must be converted to metric as follows:

To convert lb-in

2

to kg-m

2

, multiply by 2.93x10

-4

To convert oz-in

2

to kg-m

2

, multiply by 1.83x10

-5

To convert lb-in-sec

2

to kg-m

2

, multiply by 0.113

To convert oz-in-sec

2

to kg-m

2

, multiply by 7.06x10

-3


Note
Round the calculated result to 3 significant places.



Maximum Motor Speed in RPM.

This is also listed as Speed @ V

t

(motor speed at the terminal voltage rating). The maximum

motor speed will typically be a round even value between 1000 and 6000 RPM.



Feedback tab.

Number of Poles.

This is a positive integer number represents number of motor’s poles which is normally 2, 4,6 or 8.


Encoder Line Count

The Encoders for servomotors normally have Line Counts of 1000, 1024, 2000, or 2048. The
Encoder Line Count must be a positive integer.


Z Position. Enter 0 (zero)

Zero marker pulse position. This field is reserved for backward compatibility. All SimpleServo
drives determine actual marker pulse position automatically.


Halls Order.

Each hall signal is in phase with one of the three phase-phase voltages from motor winding. Hall
order number defines which hall sensor match to what phase-phase voltage. Motor phases are
usually called R-S-T or U-V-W or A-B-C. Phase-Phase voltages are called Vrs, Vst, Vtr. Halls are
usually called HALL-A, HALL-B, HALL-C or just Halls 1, 2, 3. A motor’s phase diagram is supplied
by motor vendor and usually can be found in motor datasheet or making a request to motor
vendor. A sample phase diagram is shown below.

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