AMCI SMD23E2 Series, User Manual

Page: 92 / 134

I
NSTALLING THE
SMD23E2
OR
SMD24E2
SMD23E2 and SMD24E2 User Manual
ADVANCED MICRO CONTROLS INC.
92
1.2 Safe Handling Guidelines (continued)
1.2.2 Prevent Debris From Entering the Unit
While mounting devices, be sure that all debris (metal chips, wire strands, tapping liq-
uids, etc.) is prevented from falling into the unit, specifically into the M12 connectors.
Debris may cause damage to the unit or unintended machine operation with possible
personal injury.
1.2.3 Remove Power Before Servicing
Remove power before removing or installing any SMD23E2 or SMD24E2 units in a
hazardous environment.
1.3 Operating Temperature Guidelines
Due to the onboard electronics, the maximum operating temperature of the SMD23E2 or SMD24E2 is limited
to 203°F/95°C. The motor by itself has a maximum operating temperature of 266°F/130°C. Depending on the
operating current setting, move profiles, idle time, and the idle current reduction setting, it is possible to
exceed these temperatures in a thermally isolated environment. As explained in the mounting section, mount-
ing the SMD23E2 or SMD24E2 to a large metal heatsink is the best way to limit the operating temperature of
the device. Operating temperature should be monitored during system startup to verify that the maximum
motor temperature remains below its 203°F/95°C specification. SMD23E2 and SMD24E2 devices have an
onboard thermistor and will remove motor current if the operating temperature of the electronics exceeds this
limit. These ovetemperature faults are also reported in the Network Input Data.
1.4 Mounting
All AMCI motors have flanges on the front of the motor for mounting. This flange also acts as a heatsink, so
motors should be mounted on a large, unpainted metal surface. Mounting a motor in this fashion will allow a
significant amount of heat to be dissipated away from the motor, which will increase the unit’s life by reduc-
ing its operating temperature. This also allows higher current settings in environments with elevated ambient
temperatures. If you cannot mount the motor on a large metal surface, you may need to install a fan to force
cooling air over the unit.
Motors should be mounted using the heaviest hardware possible. AMCI motors can produce high torques and
accelerations that may weaken and shear inadequate mounting hardware.
1) The motor case must be grounded for proper operation. This is usually accomplished
through its mounting hardware. If you suspect a problem with your installation, such as
mounting the motor to a painted surface, then run a bonding wire from the motor to a solid
earth ground point near it. Use a minimum #14 gauge stranded wire or 1/4” wire braid as
the grounding wire
2) Do not disassemble any stepper motor. A significant reduction in motor performance will
result.
1.4.1 SMD23/4E2-M12 Mounting
The SMD23E2-M12 and SMD24E2-M12 units are not water tight. Their IP50 rating makes them acceptable
for use in dusty environments with occasional condensation. These units should be mounted in such a way
that condensation will naturally drain off of the unit instead of pooling at the motor shaft, where the motor
wires exit the motor, or on the motor laminations.
1.4.2 SMD23/4E2-M12S Mounting
The SMD23E2-M12S and SMD24E2-M12S units are not water tight. Their IP64 rating makes them accept-
able for use in dusty environments, environments with condensation, and environments where the unit may
be exposed to splashing water. SMD23/4E2-M12S units should be mounted in such a way that condensation
and liquids will naturally drain off of the unit instead of pooling on the motor laminations.