Projecta IM2000 Instrucciones de operaciones descargar pdf (Pagina 27)

Figure 6.1 A & B: Per Phase Winding Inductance

The per phase winding inductance specified may be different than the per phase

inductance seen by your IM483 driver depending on the wiring configuration

used. Your calculations must allow for the actual inductance that the driver will

see based upon the wiring configuration.

Figure 6.1A shows a stepper motor in a series configuration. In this configura-

tion, the per phase inductance will be 4 times that specified. For example: a

stepping motor has a specified per phase inductance of 1.47mH. In this

configuration the driver will see 5.88 mH per phase.

Figure 6.1B shows an 8 lead motor wired in parallel. Using this configuration

the per phase inductance seen by the driver will be as specified.

Using the following equation we will show an example of sizing a motor for a

IM483 used with an unregulated power supply with a minimum voltage (+V)

of 18 VDC:

.2 X 18 = 3.6 mH

The recommended per phase winding inductance we can use is 3.6 mH.

Maximum Motor Inductance (mH per Phase) =

.2 X Minimum Supply Voltage

NOTE: In calculating the maximum phase inductance, the

minimum supply output voltage should be used when using

an unregulated supply.

PHASE A

PHASE B

8 Lead Stepping Motor

Series Configuration

8 Lead Steppin

Motor

Parallel Confi

uration

PHASE A

PHASE B

(Note: This example also

applies to the 6 lead motor

full copper configuration and

to 4 lead stepping motors)

(Note: This example also

applies to the 6 lead motor

half copper configuration)

Specified Per Phase

Inductance

Specified Per Phase

Inductance

Actual Inductance

Seen By the Driver

Actual Inductance

Seen By the Driver

1 2 ... 22 23 24 25 26 27 28 29 30 31 32 ... 76 77

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Projecta IM2000 Instrucciones de operaciones Pagina 27

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