Technical information

148
230V FX Series Positioning Drive Reference Manual
(2) Shorts Fault
The drive can detect if the motor stator or stator cable or bridge becomes shorted. If this
happens, the diagnostic display on the drive will indicate “2”. The bridge AC must be turned
off and the cause of the short circuit must be determined and repaired before a restart is
attempted. Contact Customer Support if the cause of the short circuit can not be determined
and repaired.
(3) Resolver Fault
The drive monitors the three resolver signals (REF, SIN, COS). If any of these signals are lost,
the drive will display a “3” on the diagnostics display. Check the resolver cable connections.
(4) Logic Supply Fault
The drive monitors its logic supplies to insure that they are above the minimum operating
level. If any power supply voltage drops below the minimum operating level, the drive will
display a “4” on the diagnostics display. The only way to clear a “4” fault is by turning power
OFF, then ON.
(5) Motor Temperature
There are two thermal switches in DX-316W to DX-6300W NPT type motors that can cause
a “5” fault. The first switch monitors the ambient temperature in the rear of the motor housing.
If the temperature is above 80°C (176°F) (limit of most low cost PVC wire), a “5” fault will
occur. If high temperature (105°C/221°F) wiring is used, then this switch can be disabled by
moving JP1 in the rear of the motor from the “Normal” to the “Disable” position. This
function is not available for DXM-8200 through DXM-8400 motors. (A DXM-8200 through
8400 requires a ETWF-XXX high temperature resolver cable.)
Note
This 80°C (176°F) thermal switch is installed only in the non-connectorized NPT type
motor.
The second thermal switch is common to all motors. It monitors the temperature of the motor
windings and causes a “5” fault if the winding temperature becomes excessive. This thermal
switch cannot be disabled. If this fault occurs, wait at least 30 minutes with power off to allow
the motor to cool down.
160 2.0
180 1.8
200 Peak 1.5
Percent of Continuous Current Approximate Time Before “1” Fault (seconds)