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ABB ACS55-01N-01A4-2 [53/55] What this chapter contains
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53
ACS55 motor overload protection
ACS55 motor overload protection
What this chapter contains
This chapter describes the motor overload protection function in ACS55 drive.
Description
ACS55 estimates motor temperature based on measured output current and motor
I
nom
setting, and automatically protects the motor from overheating by tripping. The
trip time depends on the extent of the overload (I
out
/I
nom
), the output frequency and
nominal motor frequency. If the motor cables are long they cause large capacitive
currents.
Running at low speed (under 35 Hz break point) motor overload (I
2
t overload) takes
place. See Figure 25.
To avoid unnecessary overload tripping due to long motor cables or low speed, set
the MOTOR I NOM potentiometer to the maximum value. This will disable the motor
overload fault. Note that after this setting the motor overheat protection in no longer
in use and will not protect the motor from overheating. The motor overload
protection can also be disabled via DriveConfig by setting the parameter 3005
MOTOR THERMAL PROTECTION to DISABLED.
To reduce large capacitive currents with long motor cables, use output choke
(ACS-CHK-X).
Figure 25. Trip time
By setting the motor nominal speed to 60 Hz by dip switch, the break point in Figure
25 is set to 42 Hz instead of 35 Hz. If the motor nominal frequency is set by
DriveConfig software, the break point is raised from 35 Hz to 42 Hz if the motor
nominal frequency is over 55 Hz.
Содержание
- Driveware 1
- User s guide driveconfig 1
- Driveconfig 3
- User s guide 3
- Table of contents 5
- Compatibility 9
- Contents 9
- Introduction to the manual 9
- Reader 9
- Safety instructions 9
- What this chapter contains 9
- Product and service inquiries 10
- Product training 10
- Providing feedback on abb drives manuals 10
- Driveconfig 11
- Overview of driveconfig 11
- What this chapter contains 11
- Computer requirements 13
- Delivery check 13
- Getting started 13
- What this chapter contains 13
- Assembling the spare pin headers 14
- Connecting drive and pc 15
- Installing driveconfig 16
- Usb drivers for rfdt 02 16
- Win2000 and winxp 16
- Usb converter with driveconfig 17
- Starting driveconfig 19
- Set parameter language 21
- Drive status 23
- Drive status panel 23
- What this chapter contains 23
- Status bar 24
- Parameter browser 25
- Parameters 25
- What this chapter contains 25
- Configuring parameter file 26
- Handling parameter files 26
- Parameters and actual signals 26
- To open a dcp file and read the parameters 26
- To read the parameter values from the drive 26
- To save parameter names and values in a dcp file 26
- To transfer the parameter file to the drive 27
- Compare parameters 28
- How to restore factory settings 31
- Restore factory settings 31
- What this chapter contains 31
- Drive control panel 33
- Operation 33
- What this chapter contains 33
- Button function 35
- Drive monitoring 35
- Figure 20 monitor toolbar 35
- Monitoring is controlled using the monitor toolbar to show the monitor toolbar click monitor in the driveconfig main window the monitor window appears with the monitor toolbar at the top of it 35
- Operation 35
- Table 5 monitor toolbar buttons 35
- The monitor toolbar has the following buttons 35
- This chapter describes how to use driveconfig to monitor the operation of the connected drive 35
- What this chapter contains 35
- You can use driveconfig to monitor the operation of your connected drive the operational values can be shown in both graphical and numerical format and monitoring data can be saved to a file for later use 35
- Monitoring settings 36
- After you have selected the signals they are displayed in the drop down menu select the signal to define the signal specific settings for it in the figure above signal 0102 output freq is selected 37
- Dialog item meaning 37
- Drive monitoring 37
- Figure 22 select signals to be monitored 37
- Table 6 global monitoring settings 37
- Dialog item meaning 38
- Drive monitoring 38
- File operations 38
- Note the monitor window must be active when saving or loading the monitor data 38
- Table 7 signal specific monitoring settings 38
- To load a dcm file select file open 38
- To save the monitoring data to a driveconfig monitoring dcm file select file save 38
- Loading drive firmware 39
- Loading the firmware 39
- What this chapter contains 39
- Communication port 41
- Confirmation and options 41
- Settings 41
- What this chapter contains 41
- Error messages 43
- Possible causes and what to do possible causes and what to do 43
- Table 8 acs55 related error messages 43
- The fault messages received from the acs55 drive are also displayed in driveconfig the acs55 related fault messages are listed in the following table 43
- This chapter lists the driveconfig pc tool error messages 43
- What this chapter contains 43
- Drive status 44
- Error message cause solution 44
- Error messages 44
- Parameter browser 44
- Parameter browser related error messages are listed in the following table 44
- Table 10 drive status related error messages 44
- Table 9 parameter browser related error messages 44
- The drive status related error messages are listed in the following table 44
- Communication 45
- Communication related error messages are listed in the following table 45
- Drive identification 45
- Drive identification related error messages are listed in the following table 45
- Error message cause solution 45
- Error messages 45
- Table 11 drive identification related error messages 45
- Table 12 communication related error messages 45
- Commissioning wizard related error messages are listed in the following table 46
- Error message cause solution 46
- Error messages 46
- Monitor 46
- Monitoring related error messages are listed in the following table 46
- Table 13 commissioning wizard related error messages 46
- Table 14 monitoring related error messages 46
- Actual signals and parameters of acs55 47
- Fault history 47
- Operating data 47
- Parameters and actual signals 47
- Reference 47
- Select 47
- Terms and abbreviations 47
- The parameters and actual signals used in the short parameter mode are displayed on the panel in the following order 47
- This chapter describes the parameters and actual signals of acs55 47
- What this chapter contains 47
- Actual signals and parameters of acs55 48
- Analog inputs 48
- Constant speeds 48
- Limits 48
- Relay outputs 48
- Accel decel 49
- Actual signals and parameters of acs55 49
- Motor control 49
- Start stop 49
- Actual signals and parameters of acs55 50
- Protections 50
- Start up data 50
- Frequency 51
- Output 51
- Actual signals and parameters of acs55 52
- Acs55 motor overload protection 53
- Description 53
- What this chapter contains 53
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