Dallee Electronics ENGINEER User Manual

ENGINEER

Operating Instructions

Caution - Electrically operated product. Please read and follow

instructions to insure safe operation and handling.

OVERVIEW

The ENGINEER THROTTLE is an
integ rated circuit design, full feature,
momentum throttle. The stand ard
ENGINEER pro duces 13 volts DC with
a maximum curren t of 5.0 amperes.
The GAUGE-1 ENGINEER produces
18 volts DC with a maximum current
of 4.0 amperes. In ad dition to its meter
instrumentatio n and adjustable pulse
generation circuitry, the ENGINEER
allows the user to vary both the
throttle speed response (momentum)
and the service brake response. This
variability of both throttle and brake
resp onse permits realistic simulation
of handling characteristics ranging
from light engine movement to full
tonnage trains. Interlocked reverse is
also a standard feature of the
ENGINEER. Interlocked reverse
requires the train to stop before the
reverse switch becomes functional.
The ENGINEER is equip ped with a
regulation circuit which maintains a
constant output vo ltage and therefo re
constant locomotive speed. The
ENGINEER's pulse generatio n circuitry
allows adjustment of p ulse height to
permit matching of pulses to individual
locomotive motor starting
requirements. The pulse frequency is
varied automatically according to the
demand established by the
ENGINEER's output voltage level.

The ENGINEER has a four position
brake switch which simulates most
operating functions including
acceleratio n, deceleratio n and/or
braking and continuous running. This
brake switch, tog ether with the
reverse interlo ck feature are
combined in the optional
WALK-A-ROUND controller to permit
walk around control, with memory, of
the ENGINEER from any number of
remote p lug in locations.

DESCRIPTION AND LOCATION OF
COMPONENTS AND CONTROLS

On the rear face o f the ENGINEER
you w ill find the power cord, a
resettable circuit breaker and a
barrier strip with two terminals. These
two terminals are fo r the output to the
track. There are no other outputs
provid ed as it is our judg ement that all
power in the throttle should b e
reserved for output to the track and
any accessories should b e connected
to a sep arate power source.

The voltmeter is located in the upper
left area of the face p anel and is used
to mon itor track voltage. Adjacent to
the voltmeter and to its right is the
ammeter which is used to monitor the
current flow to the track (load ). To the
right of the meters you will find a red
indicator which is used to show
maximum current co nditions. During
short circuit or currents in excess of
maximum, this indicator will illuminate.
If the overload continues the ampere
outp ut will become less than when the
short/overload occurred (this is known
as foldback current limiting) and the
outp ut voltage will gradually decrease
to a low setting . This will eliminate
jack rabbit starts which would
otherwise occur when the overload is
corrected.These indications depict
prop er function of the internal,
electronically limiting, output current
regulato r.

In the upper right corner is the power
switch which will glow green when the
ENGINEER is "ON".

Belo w the meters, at the left, is the
reversing switch. This switch is like a
DPDT type with out center off. Its two
positions are labeled FORW ARD and
REVERSE and its function is
interlocked so that directio n can only
be changed when throttle output is at
zero voltage, indicating a full stop.

To the right of the reversing sw itch
and at about the center of the panel is
the PULSE control which allows the

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