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102

Unidrive M702 User Guide

Issue Number: 3

7 Running the motor

This chapter takes the new user through all the essential steps to
running a motor for the first time, in each of the possible operating
modes.
For information on tuning the drive for the best performance, see

Chapter 8 Optimization on page 118

7.1 Quick start connections

7.1.1 Basic requirements

This section shows the basic connections which must be made for the
drive to run in the required mode. For minimal parameter settings to run
in each mode please see the relevant part of section 7.3

Quick start

commissioning / start-up

on page 107.

Table 7-1 Minimum control connection requirements for each

control mode

Table 7-2 Minimum control connection requirements for each

mode of operation

Speed feedback

Suitable devices are:
•

Incremental encoder (A, B or F, D with or without Z)

•

Incremental encoder with forward and reverse outputs (F, R with or
without Z)

•

SINCOS encoder (with, or without Stegmann Hiperface, EnDat or
SSI communications protocols)

•

BiSS absolute encoder

•

EnDat absolute encoder

•

Resolver

Speed and position feedback

Suitable devices are:
•

Incremental encoder (A, B or F, D with or without Z) with
commutation signals (U, V, W)

•

Incremental encoder with forward and reverse outputs (F, R with or
without Z) and commutation outputs (U, V, W)

•

SINCOS encoder (with Stegmann Hiperface, EnDat or SSI
communications protocols)

•

BiSS absolute encoder

•

EnDat absolute encoder

•

Resolver

7.2 Changing the operating mode

Changing the operating mode returns all parameters to their default
value, including the motor parameters.

User Security Status

(Pr

00.049

)

and

User Security Code

(Pr

00.034

) are not affected by this procedure).

Procedure

Use the following procedure only if a different operating mode is
required:
1. Enter either of the following values in Pr

mm.000

, as appropriate:

1253 (50 Hz AC supply frequency)
1254 (60 Hz AC supply frequency)

2. Change the setting of Pr

00.048

as follows:

The figures in the second column apply when serial communications are
used.
3. Either:
•

Press the red

reset button

•

Toggle the reset digital input

•

Carry out a drive reset through serial communications by setting
Pr

10.038

to 100 (ensure that Pr.

mm.000

returns to 0).

Ensure that no damage or safety hazard could arise from the
motor starting unexpectedly.

The values of the motor parameters affect the protection of
the motor.
The default values in the drive should not be relied upon.
It is essential that the correct value is entered in Pr

00.046

Rated Current

. This affects the thermal protection of the

motor.

If the drive is started using the keypad it will run to the speed
defined by the keypad reference (Pr

01.017

). This may not

be acceptable depending on the application. The user must
check in Pr

01.017

and ensure that the keypad reference

has been set to 0.

If the intended maximum speed affects the safety of the
machinery, additional independent over-speed protection
must be used.