MDE-4319A TopKAT Fuel Managment System Installation Manual · November 2005
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Power Requirements
General Installation
Power Requirements
AC Power to TopKAT
When mounted to a 9800 or ASTRA, AC power for the TopKAT comes from the same power
source used to power the 9800 or ASTRA Micro Feed. A wiring cable for AC power from the
9800 or ASTRA to the TopKAT is supplied with the TopKAT. See
for more information.
When mounted on a pedestal, AC power for the TopKAT system must come from a separate,
dedicated circuit breaker. No other equipment, including the system's pumps or dispensers,
may be powered from this breaker.
When the TopKAT is pedestal-mounted with internal PCUs, AC power for the TopKAT comes
from the same power source used to power the PCUs. A wiring cable for AC power from the
TopKAT to the PCUs is supplied. When the TopKAT is pedestal mounted but being used with
wall-mounted PCUs, the AC power for the TopKAT and PCUs must come from a separate,
dedicated circuit breaker. No other equipment, including the system's pumps and dispensers
may be powered from this breaker.
TopKAT Peripheral Equipment
When used with a 9800 or ASTRA, AC power for the data terminal or external modem must
come from a separate, dedicated circuit breaker. No other equipment, including the system's
pump or remote dispenser control, may be powered from this breaker. However, for 9800 and
ASTRA applications, it is acceptable to power the data terminal or external modem from the
breaker that supplies power to the electronic register (micro feed on 9800 or ASTRA). This
breaker is the same one that supplies power to the TopKAT. Whenever possible, one breaker
should be used to supply the micro feed and the data terminal or external modem. However, it
is acceptable to supply the power to both from multiple breakers within the same breaker panel
and the same phase of power. When necessary, power for the data terminal or modem may be
supplied from a separate, dedicated breaker located in a different breaker panel.
When used with a pedestal TopKAT, power for a data terminal or external modem can come
from the same breaker as the TopKAT.
The system requires 115 VAC + 10% 47-63 Hz, or optional 230 VAC + 10% 47-63 Hz for
power. The system draws 95 watts maximum.
Grounding
Proper system grounding is an extremely important part of the system installation. As with the
AC power, the grounds for all system components should return to the same breaker panel.
This helps to assure a common ground throughout the system which is necessary for
protection of the RS-485 data loop circuitry. Grounds for all system devices should be wired
to the breaker panel ground bus bar which in turn should be grounded to a ground rod. A
conduit ground does not provide a sufficient ground. It is recommended that the neutral and
ground bus bars be bonded together when it is not prohibited by local codes.
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