14
GROUND FAULT (5)
This message indicates a leakage to ground on the output of the inverter.
The "Ground Fault Trip" LED (D2) on the interface board will be
illuminated and the "Inverter OK" LED on the interface board will be
out. This fault will also be present if the programming card on the
interface board is not installed. To remedy this fault, check the output
wiring and motor for ground faults. This fault returns a "Trip Locked".
Also see Ground Fault Trips, page 37.
OVER TEMP (6)
This message indicates that the unit's heatsink temperature or the unit's
internal ambient temperature has exceeded permissible limits. This
fault may also be caused by a trip received from the optional external
temperature sensor if a sensor has been connected to terminal MK15
on the interface board. The interface board LED's indicate the nature
of the specific trip. In all cases below the "Inverter OK" LED will be out.
"Over Temperature Trip" LED (D3) only indicates the unit's heatsink
sensor has caused the trip. "Over Temperature Trip" LED (D3) and
Internal Over Temperature" LED (D109) illuminated indicates the thermal
sensor located on the interface board has detected high ambient
temperature within the unit and caused the trip. "Over Temperature
Trip" LED (D3) and "External Over Temperature" LED (D108) illuminated
indicates the external temperature sensor has caused the trip. To
remedy this fault, correct the over-temperature condition. This fault
returns a "Trip". Also see Overtemp Trips, page 39.
INVERT TIME (7)
This message indicates the unit has delivered greater than 105% of
the unit's continuous current rating for too long (inverse time function).
Prior to this fault condition the "Invert Time" warning will be displayed.
An indication from the interface board status LED's does not apply. To
remedy this fault, reduce the motor load to at or below the unit's
continuous current rating. This fault returns a "Trip Locked". During
the trip the counter will count down. Upon reaching 90%, the "Trip
Locked" will change to "Trip".
MOTOR TIME (8)
This message indicates the motor has consumed greater than 116% of
the motor's nominal current rating for too long as entered in parameter
107. This fault may also be caused from running the motor at a low
speed and high current for too long a period of time. This trip will only
occur if the "Motor Thermal Protection" has been activated in parameter
315. Prior to the trip the "Motor Time" warning will be displayed. In
addition, this fault may be displayed if an external thermistor has been
connected to input 16 and is defective, disconnected or indicating an
over-temperature condition. Also note that by selecting "Thermistor" in
parameter 400 in error will result in a "Motor Time" fault. An indication
from the interface board status LED's does not apply. To remedy this
fault, reduce the load on the motor or raise the motor's speed. This
fault returns a "Trip Locked". During the trip the counter will count
down. Upon reaching 0% the "Trip Locked" will change to "Trip".
ALARM MESSAGES
(continued)