31
Troubleshooting
Symptom
Power (Green LED) light does not come on
Motor makes noise but is not moving (Stalled)
Motor is not making any noise and is not moving
(no power to motor)
Circuit Breaker trips when power applied to VXM
Circuit Breaker trips while running motor for a short
time
Circuit Breaker trips while running motor for a long
time
Controller is too hot to touch (It is normal for
Controller and Motor do get very warm when
running continuously)
Motor runs erratically (at lowest speeds goes either
direction, and has low torque at mid speeds)
Motor always goes opposite direction
VXM resets itself and sends “ËB” to the host.
VXM continuously resets itself (flashes power light
slowly) and sends “ËB”s to the host.
Power (Green LED) light flashes rapidly and
continuously on power-up
On-Line light flashing continuously (yellow LED)
Power and On-Line light flash rapidly and VXM
sends “ËM” to the host.
Power and On-Line light flash rapidly and VXM
sends “ËL” to the host.
Power and On-Line light flash rapidly and VXM
sends “ËJ” to the host.
Power and On-Line light flash rapidly and VXM
sends “ËC” to the host.
Possible Cause
Power supply not connected or AC cord not
attached. Power switch not on. Circuit breaker
tripped (white center protruding from breaker.)
VXM not configured for Motor, speed too high,
broken wiring, or jammed mechanism/motor.
Limit switches not connected or set for wrong
type switches
Voltage > 28 volts or polarity reversed
Wrong motor selected. Shorted wiring.
Wrong motor setting. Shorted wiring. Controller
overheating from lack of ventilation or ambient
temperature too high
Wrong motor setting. Lack of ventilation or
ambient temperature too high. NOTE: Motor
should always be mounted for heat conduction.
Broken wire to motor or broken connector pin
Directions were inverted with the “setDM”
command. Refer to the “getDM and “setDM”
command.
A motor 3 or 4 command was sent to the VXM
when there is not a second VXM connected to
the VXM bus.
A master VXM attempts communication with a
Slave that is off.
Run, Stop, or a Jog input is pulled low. The VXM
does not allow button Jog inputs to be activated
at power up.
RS-232 overrun error, host sent commands
while VXM was busy sending requested data
(release button/input to recover.)
(power off/on to recover.)
Program memory is full (send “K” to recover.)
More than 10 nested Loop commands
encountered per run (send “K” to recover.)
More than 4 nested "JMx"s encountered per run
(send “K” to recover.)
When "U9x" missing or motor not the same
when continuous indexing (send “K” to recover.)
30
Specifications
Physical:
Weight.(VXM-1)...2.6 lbs (1.2 kg)
Weight.(VXM-2)...2.9 lbs (1.3 kg)
Height .................3.27” (83 mm)
Width ..................4.37” (111 mm)
Length ................6.89” (175 mm)
AC Power Supply
Weight.................1.0 lbs (0.45kg)
Height .................1.57” (40 mm)
Width ..................2.72” (69 mm)
Length ................5.14” (131 mm)
Electrical Requirements:
AC Power Supply....... 100-240VAC 2A 50-
60Hz
VXM Controller ........ 24VDC 2.5A
Environmental:
Operating Temperature .... 35°-95° F (2°-
35° C)
Relative Humidity..... 10%-90%
(noncondensing)
Basic Models:
VXM-1 (one motor version)
VXM-2 (two motor version, one motor
operates at a time)
Velmex COSMOS Software
The COSMOS software for Windows is the easiest way to configure, program, and
become familiar with the features of the VXM controller. COSMOS has the following
capabilities:
1. Test serial port for communications
2. Retrieve and update setup information
3. Display status and error messages
4. Enter commands directly into the VXM
COSMOS is included on the VXM CDROM.
RS-232 Port Configuration: 8 Data, No Parity, 1 Stop, 9600 baud rate default
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