ACS 300 User’s Manual
67
Chapter 7 - Drive Parameters
TEMP” fault. The fault can be reset, when the motor has cooled
down to a safe temperature. The ACS 300 will continue to
calculate the motor temperature even if the motor is not running.
If the ACS 300 is disconnected from the mains, the overload
protection calculation is reset, and the motor is assumed to be at
ambient.
The motor thermal protection function is designed to protect
motors even at low speeds by decreasing the allowable operation
current. This is necessary as the motor´s cooling fan becomes
less efficient at low speeds.
For standard 50 Hz squirrel cage motors typical value for this
parameter is 35 Hz.
MOTOR I
Nominal motor current at full load as indicated on the motor
rating plate. See U/f RATIO, TEMP LIM and figure 7-6. This
parameter does not need to be set if TEMP LIM is set to OFF and
OPTIM U/f RATIO is not used. MOTOR I does not restrict the I
LIMIT parameter.
DIR
If DIR parameter is set to FWD ONLY, local and external direction
commands are disabled and the motor rotational direction is fixed
to forward.
AI-FAULT
This parameter allows you to disable Analogue Input signal fault
detection. If AI-FAULT is set to DISABLE and the reference
minimum is set to 2 V / 4 mA, CUSTOM or JOYSTICK 2 V/ 4 mA,
the reference is set according to 2V/ 4mA input when the control
signal is lost. Analogue input fault is not indicated and not stored
in Fault History.
1. RELAY
2. RELAY
This parameter allows you to select the information indicated with
Relay Output. Factory setting for RELAY 1 is fault function.
Factory setting for RELAY 2 is code number 7, “Motor is running”.
Summary of Contents for ACS 300
Page 14: ...xiv ACS 300 User s Manual Table of Contents ...
Page 24: ...10 ACS 300 User s Manual Chapter 1 Overview of This Manual ...
Page 28: ...14 ACS 300 User s Manual Chapter 2 Mechanical Installation ...
Page 50: ...36 ACS 300 User s Manual Chapter 4 Control Connections ...
Page 60: ...46 ACS 300 User s Manual Chapter 6 Control and Parameter Logic ...