Specifications

20 Gear Drive, Plymouth Ind. Park, Terryville, CT 06786
Tel: [phone] Fax: [phone] http://www.amci.com
GENERAL INSTALLATION GUIDELINES
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Wiring (continued)
h Motor Wiring (High Power AC & DC)
1) Motor Wiring must be kept separate from the indexer cabling and other low power I/O wiring in order
to lessen the possibility of coupling transient noise into the low power cabling.
2) If a conduit containing the indexer cabling or other low power wiring must cross conduit that contains
motor wiring, they must cross at right angles.
h AC Power Wiring (High Power AC & DC)
1) Power Wiring must be kept separate from the indexer and input wiring in order to lessen the
possibility of coupling transient noise into the low power cabling.
2) If a conduit containing the indexer cabling or other input wiring must cross conduit that contains
power wiring, they must cross at right angles.
3) Whenever possible, conduit that contains low power cabling must be kept 1 foot (30 cm) away from
120Vac conductors, 2 feet (61 cm) from 240Vac conductors, and 3 feet (91 cm) from 480+ Vac
conductors.
Surge (EMI) Suppression
All inductive devices in the system, such as motor starters, contactors, relays and solenoids, must have surge
suppression devices installed across their coils. This limits the amount of electrical noise that may be coupled
into any low power cabling near the inductive devices. In the case of the SD17063’s indexer cabling, this low-
ers the chances that electrical noise will appear as directional pulses to the drive.
Devices that must be suppressed includes all devices that share an AC power connection with the SD17063
and its indexer, have wiring in the enclosure that houses the SD17063 or indexer, or wiring that is run in the
same conduit as indexer wiring. DC loads are typically suppressed with a flyback diode, while AC loads are
typically suppressed with a RC network or varistor.
h RC Networks are the preferred suppressor for AC loads
The figure below show where surge suppression devices should be placed in the circuit.
Figure 4.3 Installing Surge Suppression Devices
Suppressor
n/o
Inductive
DeviceContact
Power In
Power Return
Acceptable Connection
n/o
Inductive
DeviceContact
Power In
Power Return
Un-Acceptable Connection 1
Suppressor
n/o
Inductive
DeviceContact
Power In
Power Return
Un-Acceptable Connection 3
Suppressor
The acceptable connection supresses noise at its source. The
wiring that connects the load to the power supply and contacts
will not radiate noise when the load is switched and noise will
not be coupled into the power supply.
This connection protects the power supply and contact, but
allows noise to radiate through the load's wiring where it can
be coupled into other cables around it.
n/o
Inductive
DeviceContact
Power In
Power Return
Un-Acceptable Connection 2
Suppressor
This connection protects the power supply but nothing else.
Noise can radiate through the load's wiring where it can be
coupled into other cables around it and the contact may
eventually be damaged by high voltage inductive spikes.
This connection protects the contact but nothing else. Noise
can radiate through the load's wiring where it can be coupled
into other cables or into the power supply. Noise in the supply
may affect any device powered by it. Also, if the suppressor
shorts out, the load will always receive power.