246 H9 ASD Installation and Operation Manual
Alarms
Table 13 lists the alarm codes that may be displayed during operation of the H9 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 TIC Sales Representative 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 Frequency Command screen.
Table 13. H9 ASD Alarms.
LED
Screen
LCD
Screen
Description Possible Causes
CM1 Comm1 Error Internal communications error. • Improperly programmed ASD.
• Improper communications settings.
• Improperly connected cables.
CM2 Comm2 Error
External communications error.
E Emergency Off Output signal from the ASD is
terminated and a brake may be
applied if so configured.
• Stop|Reset pressed twice at the EOI.
• EOFF command received remotely.
• ASD reset required.
MOFF Main Under-Voltage Under-voltage condition at the
3-phase AC input to the ASD.
• Low 3-phase commercial voltage.
OC Over-Current ASD output current greater than
F601
setting.
• Defective IGBT (U, V, or W).
• ASD output to the motor is connected incorrectly.
• 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 Mounting the ASD
on pg. 15).
• 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.
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.ctiautomation.net - Email: info@ctiautomation.net
To Next Page
Loading...
