Running The Motor; Quick Start Connections; Changing The Operating Mode - Emerson Unidrive M400 User Manual

Safety Product Mechanical
information information installation
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 75.
Ensure that no damage or safety hazard could arise from the
motor starting unexpectedly.
WARNING
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 00.006
CAUTION
Motor 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
CAUTION
has been set to 0.
If the intended maximum speed affects the safety of the
machinery, additional independent over-speed protection
must be used.
WARNING
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 73.
Table 7-1 Minimum control connection requirements for each
control mode
Drive control method
Terminal mode
Keypad mode
Serial communications
Table 7-2 Minimum control connection requirements for each
mode of operation
Operating mode
Open loop mode
RFC – A mode
(without speed feedback)
Unidrive M400 User Guide
Issue Number: 2
Electrical Getting Basic Running
installation started parameters the motor
Requirements
Drive enable
Speed / Torque reference
Run forward / Run reverse
Drive enable
Drive enable
Serial communications link
Requirements
Induction motor
Induction motor without speed
feedback
NV Media Card Onboard
Optimization
Operation PLC
7.2

Changing the operating mode

Procedure
Use the following procedure only if a different operating mode is
required:
1. Ensure the drive is not enabled, i.e. terminal 31 & 34 are open or
Pr 06.015 is OFF (0)
2. Change the setting of Pr 00.079 as follows:
Pr 00.079 setting
The figures in the second column apply when serial communications are
used.
3. Either:
Press the red reset button
Carry out a drive reset through serial communications by setting
Pr 10.038 to 100 (ensure that Pr mm.000 returns to 0).
NOTE
When the operating mode is changed, a parameter save is carried out.
Advanced
Technical data Diagnostics
parameters
Operating mode
1 Open-loop
2 RFC-A
UL listing
information
71