Lenze S94P01G Position Servo - Manual (Page 38)

S94P01G
36
Interface
Nominal Bus Voltage (Vbus)
The Nominal Bus Voltage can be calculated by multiplying the Nominal AC mains
voltage supplied by 1.41. When using a model with the suffix “S1N” where the mains
are wired to the “Doubler” connection, the Nominal Bus Voltage will be doubled.
Example:
If the mains voltage is 230VAC, Vbus = 230 x 1.41 = 325V
This value is the initial voltage for the drive and the correct voltage will be
calculated dynamically depending on the drive’s incoming voltage value.
Rotor Moment of Inertia (Jm)
From motor manufacturer or nameplate.
NOTE
Round the calculated result to 3 significant places.
Maximum Motor Speed in RPM
This is also listed as “Speed @ Vt” (motor speed at the terminal voltage rating). The
maximum motor speed will typically be a round even value between 1000 - 6000 RPM.
Number of Poles
This is a positive integer number that represents the number of motor poles, normally
2, 4, 6 or 8.
4.6.3.2 For Incremental Encoder - Equipped Motors Only
Encoder Line Count
The Encoders for servomotors normally have Line Counts of 1000, 1024, 2000, 2048,
4000, or 4096. The Encoder Line Count must be a positive integer and must be pre-
quadrature.
Index pulse offset. Enter 0 (zero)
Index marker pulse position. This field is reserved for backward compatibility. All
PositionServo drives determine actual marker pulse position automatically.
Halls Order
Each hall signal is in phase with one of the three phase-phase voltages from the motor
windings. Hall order number defines which hall sensor matches which 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 the motor data sheet or by making a request to the motor manufacturer. A
sample phase diagram is illustrated in Figure S912.
S912