ETS-Lindgren 2090 Controller - Manual (Page 160)

Appendix C: Model 2090 Error Code Reference Model 2090 Multi-Device Controller
normally, but the display does not change, or changes
uld
e taken to insure that the device is not moved far
If so, the Model 2090
hould again report an E002 after a few seconds.
If the device does not move at all when commanded, it
may be overloaded. To verify that this is a device
failure, first remove or reduce the load and attempt
motion again. If the device operates correctly, verify
at the applied load is within the specifications of the
device.
to reset this circuit.
randomly, this usually indicates a failure of the encoder,
its electrical connection to the interface and control
board, or the mechanical linkages between the encoder
and the motor. Note that these linkages also typically
drive the mechanical limits, if equipped, so care sho
b
enough to cause mechanical damage when the Model
2090 is not indicating motion.
If this is not the case, make sure that the Model 2090 is
actually indicating that device motion is allowed. The
associated indicator should light with the UP/CW or
DOWN/CCW key is pressed.
s
th
If the device will not move at all with the load removed,
check the power to the motor. Some devices (heavy-
duty turntables, etc.) have separate circuit breakers for
the motor and control electronics. There may also be
separate breakers in the facility wiring which could be
tripped. In addition, some variable speed devices have
variable frequency drives with their own overload safety
trips. It may be necessary to cycle the power on a
variable speed device
If the device has power, listen for a hum or buzz from
the motor when the device is commanded to move.
This may indicate that the device is mechanically stalled,
or that there is a power problem to one or more of the
motor windings. Depending on the device, this could
include failed solid state relays (a possible side effect of
storms or power surges), a bad start capacitor, a bad leg
of a three phase power system, or a bad winding in the
motor itself.
Finally, it’s possible that the low voltage control signals
from the interface and control board are not getting to
the motor control relays or drive.
160 © ETS-Lindgren– April, 2006
Revision G– P# 399199