Programming instructions

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IL 30-471 (E)
TYPE “LRO” ROBONIC AUTOMATIC TRANSFER
SWITCH
Rated 30 amperes through 100 amperes at 600 volts Ac
maximum 50 or 60 Hertz.
The mechanism is a lever operated device controlled by a
120 volt unidirectional motor.
The transfer motor drives a nylon cam which in turn oper-
ates a steel lever by sliding a pin along a slot in the back
of the lever. The lever, in turn, operates the two breaker
handles.
In type A ‘LRO Robonics’ there are two micro switches
(NLS, ELS) inside the breakers which are operated by the
breaker’s main contacts to disconnect the transfer motor
power supply and allow the brake to operate. In type B’
LRO Robonics’ the distance travelled is determined by two
projections on the cam. These projections operate two
micro switches (NLS, ELS) which in turn disconnect the
power to the transfer motor causing a brake to operate.
The type LRO has three operating positions. They are
the normal breaker closed and the emergency breaker
open, the emergency breaker closed and the normal
breaker open or both the normal and emergency break-
ers open but never both normal and emergency breakers
closed.
The type LRO can also be easily manually operated. Open
the lever cover, remove the slide pin and place it in the
hole supplied in the lever cover and close the cover. Then
the lever can be manually operated for whatever position
desired without interference by the automatic control. For
automatic control again, simply align the lever slot with
the hole in the operating cam and replace the slide pin.
The various automatic control components are described
under the section titled “Logic Control”.
TYPE “RO” ROBONIC AUTOMATIC TRANSFER
SWITCH
A complete line rated from 150 amperes through 1000
amperes at 600 volts Ac 50 or 60 Hertz.
The transfer mechanism consists of the transfer motor, a
gear train and two breaker operating cams.
SPUR GEAR MESHING RELATIONSHIP
(Bottom View of Top Cover)
The transfer motor drives the center gear which in turn
operates the two secondary gears. There is a projection
in the secondary gears which slides in a groove in the
operating cams moving the cams from side to side. The
breaker handles are set inside two outer guides of the
cam and are also moved from side to side. There are two
micro switches (NLS, ELS) inside the breakers which are
operated by the breaker’s main contacts to disconnect the
transfer motor power supply and allow the brake to oper-
ate.
The type “RO” transfer switch has three operating posi-
tions, the normal breaker closed and the emergency
breaker open, the emergency breaker closed and the nor-
mal breaker open or both the normal and the emergency
breakers open but never both the normal and emergency
breakers closed at the same time.
The type “RO” transfer switch is also easy to operate manu-
ally. Simply remove the transfer motor fuse and turn the
operating handle on the front of the transfer mechanism
in a counter clockwise direction until you hear the break-
ers operated and the indicator is in the desired position.
There will be no interference from the solid state control.
For automatic control again, replace the transfer motor
fuse and the Robonic transfer switch will seek the power
available.
The various control components are described under the
sections titled Logic Control Panels.