Inovance MD800 Series Function Guide

Parameter Group
-294-
2.10 F9: Fault and Protection
F9-00
AC drive overload protection
Address:
63744
Min.:
0
Unit:
-
Max.: 1 Data type: UInt16
Default:
0
Change:
At once
Value Range:
0 to 1
Description
This parameter specifies whether to enable or disable the motor overload protection function. The AC
drive determines whether the motor is overloaded according to the inverse time delay curve. When
motor overload is detected, the AC drive will report an overload fault.
0: Disabled
Motor overload protection is disabled. If this parameter is set to 0, install a thermal relay before the
motor for protection starts.
1: Enabled
Motor overload protection is enabled.
F9-01
Motor overload protection gain
Address:
63745
Min.:
0.20
Unit:
-
Max.: 10.00 Data type: UInt16
Default:
1.00
Change:
At once
Value Range:
0.20 to 10.00
Description
The motor overload protection gain is calculated according to the percentage of time during which
the motor runs continuously at a certain overload threshold without reporting an overload fault.
It is used to adjust the actual overload fault report time of the AC drive when motor overload occurs.
F9-02
Motor overload pre-warning coefficient
Address:
63746
Min.:
50
Unit:
%
Max.: 100 Data type: UInt16
Default:
80
Change:
At once
Value Range:
50% to 100%
Description
The motor overload pre-warning coefficient is calculated according to the percentage of time during
which the motor runs continuously at a certain overload threshold without reporting overload pre-
warning. A pre-warning signal is sent to the control system through DO before motor overload
protection starts.
This signal is used to determine how early to send the pre-warning signal before the motor overload
protection starts. The larger the value is, the later the pre-warning signal is sent.
When the accumulative output current of the AC drive is greater than the overload time (value Y of the
motor overload protection inverse time delay curve) multiplied by the motor overload pre-warning
coefficient (F9-02), the multi-functional DO terminal of the AC drive outputs a motor overload pre-
warning signal.

Inovance MD800 Series Specifications

General

Brand	Inovance
Model	MD800 Series
Category	DC Drives
Language	English