Omron SX-F, Инструкция по эксплуатации

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259
SECTION 12
Troubleshooting, Diagnoses and Maintenance
12-1 Trips, warnings and limits
In order to protect the variable speed drive the principal operating variables
are continuously monitored by the system. If one of these variables exceeds
the safety limit an error/warning message is displayed. In order to avoid any
possibly dangerous situations, the inverter sets itself into a stop Mode called
Trip and the cause of the trip is shown in the display.
Trips will always stop the VSD. Trips can be divided into normal and soft trips,
depending on the setup Trip Type, see menu [250] Autoreset. Normal trips are
default. For normal trips the VSD stops immediately, i.e. the motor coasts nat-
urally to a standstill. For soft trips the VSD stops by ramping down the speed,
i.e. the motor decelerates to a standstill.
“Normal Trip”
• The VSD stops immediately, the motor coasts to naturally to a standstill.
• The Trip relay or output is active (if selected).
• The Trip LED is on.
• The accompanying trip message is displayed.
• The “TRP” status indication is displayed (area D of the display).
• After reset command, the trip message will disappear and menu [
100
] will
be indicated.
“Soft Trip”
• The VSD stops by decelerating to a standstill.
During the deceleration.
• The accompanying trip message is displayed, including an additional soft
trip indicator “S” before the trip time.
• The Trip LED is blinking.
• The Warning relay or output is active (if selected).
After standstill is reached.
• The Trip LED is on.
• The Trip relay or output is active (if selected).
• The “TRP” status indication is displayed (area D of the display).
• After reset command, the trip message will disappear and menu [
100
] will
be indicated.
Apart from the TRIP indicators there are two more indicators to show that the
inverter is in an “abnormal” situation.
“Warning”
• The inverter is close to a trip limit.
• The Warning relay or output is active (if selected).
• The Trip LED is blinking.
• The accompanying warning message is displayed in window [722] Warn-
ing.
• One of the warning indications is displayed (area F of the display).