Safety
Information
Product
Information
Mechanical
Information
Electrical
Information
Getting
Started
Menu 0
Running
the motor
Optimisation Macros
Advanced
Parameters
Technical
Data
Diagnostics
UL Listing
Information
204 Unidrive User Guide
www.controltechniques.com Issue Number: 9
12.1.1 HF - Hardware fault trip codes
HF trips are internal hardware faults within the drive. Powering the drive
down and re-applying power could clear the fault. Resetting the drive will
not clear a HF trip.
Below is a full list of hardware fault trip codes on Unidrive.
N
If a HF trip occurs, the Drive Healthy relay will open to indicate this.
The serial communications will not function during a HF trip.
The only HF trip that can be caused by the user is a HF82 trip where a
large option module is removed while the drive is powered up. The drive
should be powered down, the module re-fitted correctly and the power
reapplied to clear the trip.
If the drive persistently trips on a HF trip, contact the supplier of the
drive.
12.2 Alarm indications
If a critical condition is detected, the drive continues operating and the
lower display shows an alarm indication in place of the status indication.
If the condition is not rectified, the drive could trip.
The alarm indication flashes alternately with the normal display
indication.
12.3 Status indications
When the drive is in normal operation, the lower display indicates the
status of the drive.
12.4 Displaying the trip history
The drive retains a log of the last 10 trips that have occurred, in Pr 10.20
to Pr 10.29. Pr 10.20 is the most recent trip (or current trip if the drive is
in the trip state) and Pr 10.29 is the oldest. When a trip occurs all the
parameters move down one, such that the current trip is put in Pr 10.20
and the oldest trip is lost off the bottom of the log.
If any parameter between Pr 10.20 and Pr 10.29 inclusive is read by
serial communications, then the trip number in section 12.1 Trip
indications on page 198 is the value transmitted.
HF81 Software Error (odd address word)
HF82 Large option module removed
HF83 Power Board Code Failure
HF84 Current Offset Trim Failure
HF85 A to D failure (ES-CC step)
HF86 Interrupt Watchdog failure
HF87 Internal ROM check error
HF88 Watchdog Failure
HF89 Unused Interrupts (nmi as source)
HF90 Stack Overflow
HF91 Stack Underflow
HF92 Software Error (undefined op code)
HF93 Software Error (protection fault)
HF94 Software Error (odd address word)
HF95 Software Error (odd address inst.)
HF96 Software Error (illegal ext bus)
HF97 Level 1 Noise
HF98 Interrupt Crash
HF99 Level 1 Crash
Lower
display
Description
Air Control PCB ambient temperature near maximum limit
The ambient temperature around the control PCB has
reached 90°C (194°F) and the drive will trip OA if the
temperature continues to rise (see the OA trip).
br.rS Braking resistor overload
The braking-resistor [I x t] accumulator in the drive has
reached 75% of the value at which the drive will be
tripped.
hot
Heatsink temperature near maximum limit
The drive heatsink has reached 90°C (194°F) and the
drive will trip Oh2 if the temperature continues to rise
(see the Oh2 trip).
OVLd Motor overload
The motor [I x t] accumulator in the drive has reached
75% of the value at which the drive will be tripped.
NOTE
Lower
display
Description
Drive output
stage
Act Regeneration mode active
Enabled
Regen mode> The Regen drive is
enabled and synchronised to the
supply.
ACUU AC Supply loss
Enabled
The drive has detected that the
AC
supply has been lost and is
attempting to maintain the
DC bus
voltage by decelerating the motor.
dc DC applied to the motor
Enabled
The drive is applying
DC injection
braking.
dEC Decelerating
Enabled
The drive is decelerating the motor.
inh
Inhibit
Disabled
The drive is inhibited and cannot be
run.
Drive enable signal not applied to
terminal 30 or Pr 6.15 is set to 0.
POS Positioning
Enabled
The drive is positioning/orientating the
motor shaft.
rdY Ready
Disabled
The drive is ready to be run.
run
Running
Enabled
The drive is running.
SCAn Scanning
Enabled
OL> The drive is searching for the
motor frequency when synchronising
to a spinning motor.
Regen> The drive is enabled and is
synchronising to the line.
StoP Stop or holding zero speed
Enabled
The drive is holding the motor at zero
speed.
Regen> The drive is enabled but the
AC voltage is too low, or DC Bus
voltage still rising or falling.
triP Trip condition
Disabled
The drive has tripped and is no longer
controlling the motor. The trip code
appears on the upper display.
To Next Page
Loading...
Need help?
General
