UNIFREM v.3.41x
10 May 2017
Page 28 from 180
5 WARNINGS
A sample disley
Description
F1-PWM Reset
Converter outputs are blocked. RESET sources can be a binary input or any signal
(see Reset source [704] (page 49)).
W2-DC charging
If this warning is present longer than 30 seconds after the converter start, the charging
relay probably did not switch, which can be caused by incorrect supply parameters, or
damaged charging circuit of the converter. For the duration of the warning, the value
of Voltage DC [46] (page 16) is displayed in FAULTS window.
W3-System problem
Software problem occurred. Please, contact the service.
W4-24V Overload
24V power supply voltage dropped under 22V. 24V supply is probably overloaded.
For the duration of the warning, the value of Voltage 24V [72] (page 23) is displayed
in FAULTS window.
F5-Power restriction
Power restriction after reaching critical temperature or an overload status. Power
restriction function is configured in the parameter Power restriction (PR) [766] (page
74). For the duration of the warning, the value of Power restriction [1092] (page 16) is
displayed in FAULTS window.
W6-Cooler
temperature
High cooler temperature. Cooler temperature Cooler temperature [74] (page 24)
exceeded the value defined by the parameter Cooler temperature warning [767]
(page 111). If the automatic power restriction Power restriction (PR) [766] (page 74)
function is turned on, the converter can restrict power. Life cycle of the device
decreases when the device is overheated excessively and very often. For the duration
of the warning, the value of Cooler temperature [74] (page 24) is displayed in
FAULTS window.
W7-CB temperature
Igh temperature of control board. CB temperature CB temperature [75] (page 24)
exceeded value of parameter CB temperature warning [204] (page 111). Life cycle of
the device decreases when the device is overheated excessively and very often. For
the duration of the warning, the value of CB temperature [75] (page 24) is displayed
in FAULTS window.
W8-DC
Undervoltage
Low voltage of the DC link. The value Voltage DC [46] (page 16) dropped under the
fault limit DC Undervoltage - control and evaluation of other faults is blocked. For the
duration of the warning, the value of Voltage DC [46] (page 16) is displayed in
FAULTS window.
W9- PWM saturation
Converter reached maximum voltage on the output. At actual voltage value of the DC
link, duty cycle of the PWM modulation is at maximum and the current controllers are
saturated. Quality of the regulation decreases. For the duration of the warning, the
value of Modulation index [768] (page 16) is displayed in FAULTS window.
W10-INV Overload
Converter is overloaded - converter integral Thermal integral INV [31] (page 24)
exceeded the 90% value and the fault " E8-Converter overload (page 32)" can occur
shortly, after which the converter is blocked for a longer time! If the automatic power
restriction Power restriction (PR) [766] (page 74) function is turned on, the converter
may restrict power. For the duration of the warning, the value of Thermal integral INV
[31] (page 24) is displayed in FAULTS window.
W11-Fan error
Fans on the converter cooler are damaged or clogged by debris. If the problem is not
eliminated, converter overheating and other faults and warnings can occur.
W12-Replace
the
battery
Voltage of the 3V battery of the control card dropped under the 2.7V value. If the
battery is not replaced, loss of settings and saved history settings is impending. For
the duration of the warning, the value of Battery voltage [773] (page 23) is displayed
in FAULTS window.
W13-External
temperature
Cooler temperature ETP Temperature [869] (page 23) exceeded the value defined by
the parameter ETP Warning [865] (page 105). For the duration of the warning, the
value of ETP Temperature [869] (page 23) is displayed in FAULTS window.
W14-IGBT
Overheating
Power module is thermally overloaded. Converter operates at high current on high
switching frequency. For the duration of the warning, the value of the maximal IGBT
current is displayed in FAULTS window.
W15-Set date and
time
Date and time have not been set.
W16-
Uncommissioned
The converter has not been fully commissioned yet.
