Specifications

GENERAL INSTALLATION GUIDELINES
ADVANCED MICRO CONTROLS INC.
4
28
Grounding
Proper grounding is the single most important consideration for a safe installation. Proper grounding also
ensures that unwanted electrical currents, such as those induced by electromagnetic noise, will be quickly
shunted to ground instead of flowing throughout the machine.
h
All ground connections must be permanent and continuous to
provide a low-impedance path to earth ground for induced
noise currents.
h
The chassis of the SD17063 must be connected to chassis
ground through its mounting in the enclosure, and with a
bonding wire connected to the grounding lug. This wire
must be a minimum of #8 gauge and be stranded. Do not use
solid wire. A 1/2" wire braid is also acceptable.
h
Any non-isolated power supply attached to the SD17063 must
be connected to the same chassis ground as the unit to avoid
ground loops.
h
All isolation transformer secondary windings that are
grounded to conform to local or national codes must be
grounded to the same earth ground as the machine ground.
AMCI strongly suggests the use of a ground bus in the enclosure
that houses the SD17063. As shown in figure 4.1, the ground bus
becomes the central grounding point for the enclosure and its
equipment. The ground bus is directly connected to your ground-
ing electrode system.
Wiring
The most important aspect of wiring is determining the amount
of voltage and power carried by the cable and separating low
power cabling from high power cabling. Inside of an enclo-
sure, separate the two types of cabling with as much physical
distance as possible and keep the wiring neat. Outside of the
enclosure, low and high power cabling must be run in separate
conduits.
h Indexer Cabling (Low Power)
1) Indexer Cabling includes the Directional Pulse Inputs,
the Disable Input, and the Fault Ouput
2) Signals attached to the Indexer Connector are of low
voltage and low power. Indexer Cabling can be
installed in conduit along with other low power cabling
such as communication cables and low power ac/dc
I/O lines. It cannot be installed in conduit with ac
power lines, stepper motor cabling, or other high
power ac/dc I/O lines.
3) Each cable must be shielded and grounded only at the
device that is generating the signals. If you must splice
the cable, it must be done in a grounded junction box.
When splicing, treat the shield as a signal-carrying
conductor. Do not connect the shield to earth ground at
the junction box.
Figure 4.1 Ground Bus System
+
STEP/CW
DISA BLE
DISA BLE
+
FAULT
+
FAULT
STEP/CW
DIR/ CCW
DIR/ CCW
+
+
+
RES ET
RES ET
+
STEP
OVER TEMP
MOTO R FAULT
POWER
SD17063
Step pe r Dr iv e
AC PO WER
95 – 13 2 V
AC
50/ 60 Hz
INTERLOCK
B CT AP
B
B
EARTH GND
A CT AP
INTERLOCK
A
A
170Vdc p resent when t he i nt erlock pins a re connecte d. To reduc e the risk of shock, always install the facto ry s upplie d rubber b oot over t he connec tor.
GND
N
L
GROUND BUS
Internal to Enclosure
Central Grounding Point for
Enclosure and ALL of its Equipment.
SD17063
Mounted to Back of Enclosure.
EQUIPMENT ENCLOSURE
GROUNDING
ELECTRODE
SYSTEM
Figure 4.2 Typical Enclosure
+
STEP/CW
DISABLE
DISABLE
+
FAU LT
+
FAU LT
STEP/CW
DIR/ CCW
DIR/ CCW
+
+
+
RESET
RESET
+
STEP
OVER TEMP
MOT OR FAULT
POWER
SD17063
Ste ppe r Drive
AC P OWER
95 – 132 V
AC
50/60 Hz
INTERLOCK
B CTAP
B
B
EARTH GND
A CTAP
INTERLOCK
A
A
170 Vdc p resen t w hen t he i nte rloc k pin s a re conn ecte d. T o r educ e th e risk of shock, always install the fa cto ry s upp lie d r ubbe r b oot over t he con nect or.
GND
N
L
LOW POWER CONDUIT
Indexer and other cabling
HIGH POWER CONDUIT
AC/DC Output and Power Cabling
SD17063
Mounted to Back of Enclosure.
EQUIPMENT ENCLOSURE
GROUNDING
ELECTRODE
SYSTEM