HX7+ ASD Installation and Operation Manual
197
Alarms
lists the alarm codes that may be displayed during operation of the
HX7+ ASD
. Each alarm code
listed is accompanied by a description and a possible cause. In the event that the source of the malfunction
cannot be determined, contact your the
Toshiba Customer Support Center
for further information on the
condition and for an appropriate course of action.
The
Alarms
are listed in the top-down order that they are checked for activation. Only the first to be
detected will be displayed on the
screen.
Table 18. HX7+ ASD Alarms.
Keypad
Display
Function
Description
Possible Causes
CM1
Comm1 Error
Internal communications error.
• Improperly programmed ASD.
• Improper communications settings.
• Improperly connected cables.
CM2
Comm2 Error
External communications error.
EMG
Emergency Off
Output signal from the ASD is
terminated and a brake may be
applied if so configured.
• Stop|Reset pressed twice at the keypad.
• EOFF command received remotely.
• ASD reset required.
MOFF
Main
Undervoltage
Undervoltage condition at the
3-phase AC input to the ASD.
• Low 3-phase commercial power voltage too low.
OC
Over Current
ASD output current greater than
setting.
• Defective IGBT (U, V, or W).
• ASD output to the motor is connected incorrectly.
Disconnect the motor and retry.
• ASD output phase-to-phase short.
• The ASD is starting into a spinning motor.
• Motor/machine jammed.
• Mechanical brake engaged while the ASD is starting or
while running.
• Accel/Decel time is too short.
• Voltage Boost setting is too high.
• Load fluctuations.
• ASD operating at an elevated temperature.
*OH
Overheat
ASD ambient temperature
excessive.
• ASD is operating at an elevated temperature.
• ASD is too close to heat-generating equipment.
• Cooling fan vent is obstructed (see
• Cooling fan is inoperative.
• Internal thermistor is disconnected.
OJ
Timer
Run-time counter exceeded.
•
Type Reset
required; select
Clear run timer
.
*
Reset ignored if active.
Содержание HX7+ ASD
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