8527-0544-2M Rev B
APS Enterprise Scale
4
INSTALLATION, CONT.
Electrical Power
The APS Enterprise scale has been designed to operate from a 100 to 240 VAC 50/60Hz 12
VDC 1A wall plug-in UL/CSA listed AC power adapter. Note that a special order is not
required for operation at 230 VAC.
On installations requiring 230 VAC power, it is the responsibility of the customer
to have a qualified electrician install the proper power adapter plug that conforms to
national electrical codes and local codes and ordinances.
Electrical Noise Interference
To prevent electrical noise interference, make certain all other wall outlets for use with air
conditioning and heating equipment, lighting or other equipment with heavily inductive loads,
such as welders, motors and solenoids are on circuits separate from the scale. Many of these
disturbances originate within the building itself and can seriously affect the operation of the
scale. These sources of disturbances must be identified and steps must be taken to prevent
possible adverse effects on the scale. Examples of available alternatives include isolation
transformers, power regulators, uninterruptible power supplies, or simple line filters.
Transient Suppression
The following recommendations will help to reduce transients:
Do not run signal cables from the scale along side or parallel to wiring carrying AC power.
If unavoidable, position the signal cables a minimum of 24" away from all AC wiring.
Always use arc suppressors across all AC power relay contacts (see recommendations at
http://www.paktron.com/pdf/Quencharch_QRL.pdf).
Interconnections
All input, output and power connections to the APS Enterprise scale are made internally to the
main board inside the scale. Connections for the scale display, remote display and OPOS
compatible serial device are made using RJ11 snap-in modular connectors. The USB port is a
device (or upstream) port using an industry standard “B” connector. The 12VDC 1A wall plug-
in UL/CSA listed AC power adapter is connected using a power jack.
12VDC
USB
PCB COVER
POS
SERIAL
PORT 3
REMOTE
DISPLAY
SERIAL
PORT 2
SCALE
DISPLAY
SERIAL
PORT 1
