3:3
Install the Enclosed Controller
1. Refer to documentation
supplied inside the enclosure
for mounting dimensions.
2. Make sure the controller
enclosure will have at least 4
inches clearance from the top
and bottom of the enclosure to
adjacent nonheat producing
equipment for air ventilation.
3. Make sure the door or other
components do not hinder
service access.
4. In the location selected, mount
the enclosed controller.
Install the Motor
Note:
If the motor has been in
storage or subjected to adverse
moisture conditions, dry it
thoroughly before installation.
1. Verify the motor is the
appropriate size to use with the
controller.
Note:
If motor leads U, V, and W
are shorted together, it will be very
difficult to turn the shaft.
WARNING
KEYWAYS ARE SHARP
AND MAY CAUSE INJURY
TO HANDS AND FINGERS.
EXERCISE CARE WHEN
TURNING THE MOTOR
SHAFT BY HAND. FAILURE
TO OBSERVE THIS PRE-
CAUTION COULD RESULT
IN BODILY INJURY.
2. Turn the motor shaft by hand to
insure free rotation. A slight
resistance may be felt due to a
rotor magnetic force. Make
certain motor leads are not
touching.
3. Make sure the motor’s
foundation is sufficiently rigid to
prevent vibration.
4. Mount the motor to the
machine. See Figure 3-2 for
typical mounting dimensions.
Figures 3-2a and 3-2b show
servo motor dimensions.
5. Make sure the motor is
properly aligned with the driven
machine to minimize
unnecessary motor loading
from shaft misalignment. After
careful alignment, bolt the
motor securely in place.
6. If the motor will be accessible
while it is running, install a
protective guard around all
exposed rotating parts.
Install a Transformer
(If needed)
Input transformers step up or step
down input voltage and can be
either autotransformers or
isolation transformers. Isolation
transformers help eliminate:
•
Damaging A-C line voltage
transients from reaching the
controller.
•
Damaging currents, which could
develop if a point inside the
controller becomes grounded.
CAUTION
Controller can withstand 5000
amperes short circuit RMS
symmetrical current. If the
power source can generate
more, provide an isolation
transformer, a line reactor, or
other means of similar imped-
ance. Failure to observe this
precaution could result in
damage to, or destruction of,
the equipment.
Install an Input Disconnect
DANGER
THE NEC REQUIRES THAT
AN INPUT DISCONNECT BE
PROVIDED IN THE INCOM-
ING POWER LINE AND EI-
THER BE LOCATED WITHIN
SIGHT OF THE EQUIPMENT
OR BE LOCKABLE. FAIL-
URE TO OBSERVE THIS
PRECAUTION COULD RE-
SULT IN SEVERE BODILY
INJURY OR LOSS OF LIFE.
1. Install an input disconnect in
the incoming power line
according to the NEC. It must
either be located within sight of
the controller or be lockable.
2. Size the disconnect to handle
the primary circuit inrush
current of the input transformer,
if used, as well as any loads
the disconnect may supply.
3. Install the disconnect in the
primary circuit of the input
transformer, if used.
Suppress Electrical Noise
1. Suppress each switched
inductive device or its wiring
(solenoids, relay coils, starter
coils, etc.) near the controller
with an RC suppression
device, such as Reliance part
600686-33A, to avoid transient
voltages that could disturb
electronic circuits. A 220- ohm,
1/2 watt resistor in series with a
1/2 microfarad, 600-volt
capacitor can be used as the
suppressor.
2. Physically separate the wiring
of the switching devices noted
in Step 1 above from low level
signal circuits.
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