This parameter defines the time between preset reference changes when Pr 1.15 is set to 9. If Pr 1.48 is set to 1 then the preset counter and timer are

reset and preset 1 will be selected.

1.17

Keypad control mode reference

Bit

Coding

Range

±MAX_SPEED_REF rpm

Default

0.0

Update rate

4 ms read

The drive can be controlled from the keypad if Pr 1.14 {SE05, 0.26} is set to 4. The Stop and Run keys automatically become active (the Reverse key

may be optionally enabled with Pr 6.13). The speed reference is defined by Pr 1.17. This is a read only parameter that can only be adjusted in status

mode by pressing the Up or Down keys. If keypad control mode is selected, then pressing the Up or Down keys in status mode will cause the drive to

automatically display the keypad reference and adjust it in the relevant direction. This can be done whether the drive is disabled or running. If the Up

or Down keys are held the rate of change of keypad reference increases with time. The units used for to display the keypad reference for different

modes are given below.

See also Pr 1.51 on page 33 (Power-up keypad control mode reference).

1.18

Precision reference coarse

Bit

Coding

Range

±MAX_SPEED_REF rpm

Default

0.0

Update rate

Background read

See below.

1.19

Precision reference fine

Bit

Coding

Range

0 - 0.099 rpm

Default

0.000

Update rate

Background read

The speed reference resolution is restricted to 0.1 rpm from normal parameters, but the resolution can be improved by using the precision reference.

Pr 1.18 defines the coarse part of reference (either positive or negative) with a resolution of 0.1 rpm and Pr 1.19 defines the fine part of the reference

(always positive) with a resolution of 0.001 rpm. The final reference is given by Pr 1.18 + Pr 1.19. Therefore Pr 1.19 increases positive references

away from zero, and decreases negative references towards zero.

1.20

Precision reference update disable

Bit

Coding

Default

Update rate

Background read

When this bit is at 0 the precision reference parameters are read and stored in internal memory. Because the precision reference has to be set in two

parameters, this bit is provided to prevent the drive reading the parameters while the reference is being updated. Instead, the drive uses the value

stored in memory preventing the possibility of data skew.