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VH[N], VL[N] - High and Low Reference Limit

Purpose:

Define the drive’s minimum and maximum speed and position reference limits.

Software commands beyond these values are not accepted, and are truncated to VL[N] and

VH[N].

Speed limits are restricted by the TS value according to the following:

For analog encoders, resolvers, tachometers, potentiometers and digital halls:

SpeedLimit = minimum between 80,000,000 and 8e9/TS.

For quadrature encoder:

SpeedLimit = minimum between 20,000,000 and 8e9/TS.

 The reference to the speed controller is limited to the [VL[2]…VH[2]] range.

 The reference to the position controller is limited to the [VL[3]…VH[3]] range.

Attributes: Type: Command/Parameter, Integer

Source: Program, RS-232, CANopen

Restrictions: MO=0

VH[N] > VL[N] for all entries

Default values: VH[2]=15,000,000, VH[3]= 999,999,990

VL[2]=-15,000,000, VL[3]=-999,999,990

(RS), Non-volatile

Range: 0 < VH[2] < +Speed Limit

- Speed Limit < VL[2] < 0

-2

< VH[3] < 2

– 1

-2

< VL[3] < 2

– 1

Unit modes: VH[2], VL[2]: UM=2, 3, 4, 5

VH[3], VL[3]: UM=3, 4, 5

Activation: Immediate

In position modes (UM=4, 5) motor movement is enabled in both directions within

the defined position reference range. If feedback has been extended beyond those

limits, the motor can be enabled by the user (MO=1) but the motion can only be in

the direction towards the reference limit range.

VH[2] is used to determine the maximum and minimum allowed speed for PWM

reference generator in 50% and 100% PWM modes.

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Elmomc SimplIQ Command Reference Manual do Utilizador Página 164