AMCI SD4840EK, User Manual

Page: 91 / 104

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SD4840EK User Manual
I
NSTALLING THE
SD4840EK
91
2.9 Connecting the Motor
2.9.1 Motor Connector
The motor connector is included with the SD4840EK. Spares are available from AMCI under the part number
MS-4M as well as directly from Phoenix Contact under their part number 187 80 37. Motor connections
should be tight, as loose connections may lead to arcing which will heat the connector. Phoenix Contact spec-
ifies a tightening torque of 4.4 to 5.4 lb-in (0.5 to 0.6 Nm)
When powered, the motor connector may represent a shock hazard because the full DC input
voltage may be present on its terminals.
Always remove power from the SD4840EK before connecting or disconnecting the
motor.
1) Never connect the motor leads to ground or to a power supply.
2) Always connect the cable shield from your motor’s cable to Earth Ground. It is best to con-
nect the cable shields to the ground bus of the system. Do not connect the shields to the DIN
rail. If you connect the motor shields to the DIN Rail and the grounding connection from
the DIN rail to the Grounding Bus fails over time, then you will eventually have a condition
where electrical noise is injected into the SD4840EK, which may result in future system
errors.
2.9.2 Motor Wiring
The SD4840 will work with many different motors, including those not sold by AMCI. This section assumes
that you have already chosen your motor and you are looking for wiring information. No wire colors are
given in the figures below because there is no single industry wide color coding scheme for stepper motors.
You must refer to your motor data sheets for this information.
A wiring document for all of the motors ever sold by AMCI is available on our website. This single document
contains all of the information necessary to connect any AMCI motor to any AMCI driver. It can be found in
the
Support -> User Manuals
section. A direct link to the section is:
https://www.amci.com/industrial-auto-
mation-support/user-manuals
. The document is simply called “wiring”.
Figure T2.9, which is continued on the following page, shows how to wire a motor to the SD4840EK in
series, parallel, or center-tap configurations.
Eight Lead Series Connected
4
2
1