Status Indications; Displaying The Trip History; Behaviour Of The Drive When Tripped - Emerson Unidrive M400 User Manual

Safety Product Mechanical
information information installation
13.7

Status indications

Table 13-6 Status indications
Upper row string
The drive is inhibited and cannot be run. The SAFE TORQUE OFF signals are not applied to the SAFE
Inhibit TORQUE OFF terminals or Pr 06.015 is set to 0. The other conditions that can prevent the drive from
enabling are shown as bits in Enable Conditions (06.010).
The drive is ready to run. The drive enable is active, but the drive inverter is not active because the final
Ready
drive run is not active.
Stop The drive is stopped / holding zero frequency.
Run The drive is active and running.
Supply Loss Supply loss condition has been detected.
Deceleration The motor is being decelerated to zero frequency because the final drive run has been deactivated.
dc Injection The drive is applying dc injection braking.
Trip The drive has tripped and no longer controlling the motor. The trip code appears in the lower display.
Under Voltage The drive is in the under voltage state either in low voltage or high voltage mode.
Table 13-7 Option module and other status indications at power-up
First row string Second row string
Waiting For Power System
The drive is waiting for the processor in the power stage to respond after power-up.
Waiting For
The drive is waiting for the option module to respond after power-up
Uploading From
At power-up it may be necessary to update the parameter database held in the drive because an option module has changed. This may involve data
transfer between the drive and option module. During this period 'Uploading From Option' is displayed.
13.8

Displaying the trip history

The drive retains a log of the last ten trips that have occurred. Trip 0 (10.020) to Trip 9 (10.029) store the most recent 10 trips that have occurred
where Trip 0 (10.020) is the most recent and Trip 9 (10.029) is the oldest. When a new trip occurs it is written to Trip 0 (10.020) and all the other trips
move down the log, with oldest being lost. The date and time when each trip occurs are also stored in the date and time log, i.e. Trip 0 Date (10.041)
to Trip 9 Time (10.060). The date and time are taken from Date (06.016) and Time (06.017). Some trips have sub-trip numbers which give more detail
about the reason for the trip. If a trip has a sub-trip number its value is stored in the sub-trip log, i.e. Trip 0 Sub-trip Number (10.070) to Trip 9 Sub-trip
Number (10.079). If the trip does not have a sub-trip number then zero is stored in the sub-trip log.
If any parameter between Pr 10.020 and Pr 10.029 inclusive is read by serial communication, then the trip number in Table 13-2 is the value
transmitted.
NOTE
The trip logs can be reset by writing a value of 255 in Pr 10.038.
13.9

Behaviour of the drive when tripped

If the drive trips, the output of the drive is disabled so the load coasts to a stop. If any trip occurs, the following read only parameters are frozen until
the trip is cleared. This is to help diagnose the cause of the trip.
Parameter
01.001 Frequency reference
01.002 Pre-skip filter reference
01.003 Pre-ramp reference
02.001 Post-ramp reference
03.001 Final demand ref
03.002 Estimated frequency
03.003 Frequency error
03.004 Frequency controller output
04.001 Current magnitude
04.002 Active current
04.017 Reactive current
05.001 Output frequency
05.002 Output voltage
05.003 Power
05.005 DC bus voltage
07.001 Analog input 1
07.002 Analog input 2
07.037 Temperature nearest to trip level
If the parameters are not required to be frozen then this can be disabled by setting bit 4 of Pr 10.037.
192
Electrical Getting Basic Running
installation started parameters the motor
Waiting for power stage
Option Waiting for an option module
Option Loading parameter database
Description
NV Media Card Onboard
Optimization
Operation PLC
Description
Status
Advanced
Technical data Diagnostics
parameters
Unidrive M400 User Guide
Issue Number: 2
UL listing
information
Drive output
stage
Disabled
Disabled
Enabled
Enabled
Enabled
Enabled
Enabled
Disabled
Disabled