Alarm And Trip Display; Keypad Control Mode; Drive Reset; Second Motor Parameters - Control Techniques unidrive sp Advanced User's Manual

Parameter Keypad and
Parameter x.00
structure display
2.8

Alarm and trip display

In any mode an alarm flashes alternately with the data displayed on the
2nd row when one of the following conditions occur. If action is not taken
to eliminate the all alarms except "Auto tune" the drive may eventually
trip. Warnings are not displayed when a parameter is being edited.
Alarm string Alarm condition
Braking resistor (Pr 10.37 > 75.0% and the braking
br.rS
IGBT is active)
Motor overload (Pr 4.17 > 75% and the drive output
OVLd
current > Pr 5.07)
hot Heatsink or control board alarms are active
When a trip occurs the drive switches to status mode and "trip" is shown
on the 1st row and the trip string flashes on the 2nd row. The read only
parameters listed below are frozen until the trip is cleared. For a list of
the possible trip strings see Pr 10.20. Pressing any of the parameter
keys changes the mode to the parameter view mode. If the trip is HF01
to HF19 then no key action is recognised.
Parameter Description
1.01 Frequency/speed reference
1.02 Frequency/speed reference
1.03 Pre-ramp reference
2.01 Post-ramp reference
3.01 Frequency slaving demand/Final speed ref
3.02 Speed feedback
3.03 Speed error
3.04 Speed controller output
4.01 Current magnitude
4.02 Active current
4.17 Magnetising current
5.01 Output frequency
5.02 Output voltage
5.03 Power
5.04 DC bus voltage
7.01 Analog input 1
7.02 Analog input 2
7.03 Analog input 3
2.9

Keypad control mode

The drive can be controlled from the keypad if Pr 1.14 is set to 4. The
Stop and Run keys automatically become active (the Reverse key may
be optionally enabled with Pr 6.13). The frequency/speed reference is
defined by Pr 1.17. This is a read only parameter that can only be
adjusted in status mode by pressing the Up or Down keys. If keypad
control mode is selected, then pressing the Up or Down keys in status
mode will cause the drive to automatically display the keypad reference
and adjust it in the relevant direction. This can be done whether the drive
is disabled or running. If the Up or Down keys are held the rate of
change of keypad reference increases with time. The units used for to
display the keypad reference for different modes are given below.
Mode
Open loop
Closed loop
Servo
Unidrive SP Advanced User Guide
Issue Number: 7
Parameter Advanced parameter
description format descriptions
Unit
Hz
rpm
rpm
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Serial comms
Macros
protocol
2.10

Drive reset

A drive reset is required to: reset the drive from a trip (except some
"Hfxx" trips which cannot be reset); and other functions as defined in
Section 3. A reset can be performed in four ways:
1. Stop key: If the drive has been set up such that the stop key is not
operative then the key has a drive reset function only. When the stop
function of the stop key is enabled, a reset is initiated while the drive
is running by holding the Run key and then pressing the Stop key.
When the drive is not running the Stop key will always reset the
drive.
2. The drive resets after a 0 to 1 transition of the Drive Reset parameter
(Pr 10.33). A digital input can be programmed to change this
parameter.
3. Serial comms, fieldbus or applications Solutions Module: Drive reset
is triggered by a value of 100 being written to the User trip parameter
(Pr 10.38).
If the drive trips EEF (internal EEPROM error) then it is not possible to
reset the drive using the normal reset methods described above. 1233 or
1244 must be entered into Pr x.00 before the drive can be reset. Default
parameters are loaded after an EEF trip, and so the parameters should
be reprogrammed as required and saved in EEPROM.
If the drive is reset after a trip from any source other than the Stop key,
the drive restarts immediately, if:
1. A non-latching sequencer is used with the enable active and one of
run forward, run reverse or run active
2. A latching sequencer is used if the enable and stop\ are active and
one of run forward, run reverse or run is active.
If the drive is reset with the Stop key the drive does not restart until a not
active to active edge occurs on run forward, run reverse or run.
2.11

Second motor parameters

An alternative set of motor parameters are held in menu 21 which can be
selected by Pr 11.45. When the alternative parameter set is being used
by the drive the decimal point after the right hand digit in the 1st row is
on.
2.12

Special display functions

The following special display functions are used.
1. If the second motor map is being used the decimal point second
from the right of the first row is on.
2. When parameters are saved to a SMARTCARD the right-most
decimal point on the first row flashes for 2 seconds.
During power up one or more of the following actions may be required.
Each action may take several seconds, and so special display strings
are shown.
Display
Action
string
If a SMARTCARD is present with Pr 11.42 set to boot the
boot parameters from the card must be transferred to the drive
EEPROM.
If the drive is in auto or boot mode (Pr 11.42 set to 3 or 4) the
card drive ensures that the data on the card is consistent with the
drive by writing to the card.
It may be necessary for a Solutions Module to transfer
parameter information from the drive. This is only carried out
loading if the parameter information held by the Solutions Module is
for a different drive software version. The drive allows up to 5
seconds for this process.
Electronic Feature look-
Performance
nameplate up table
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