Swisslog Nexus Technical Operations And Maintenance Manual page 19

13
Description
Power supply
Push-rod and motor
Rear air vent
Rear carrier position
Rear carrier sensor
Rear-position air manifold
RFID antennae, transponder,
and reader board
Rotary air valve
NEXUS STATION | TECHNICAL OPERATIONS AND MAINTENANCE GUIDE
Function
Provides power to the station and all of its mechanical and electronic compo-
nents. It is s plugged into the existing adjacent outlet in the station.
The push rod is a motorized rack and pinion at the back of the station that
helps to control both the dispatch and arrival of carriers.
When a carrier is being received into the station, the pusher moves upward
about seven inches to "catch" the carrier. Stopping the carrier during its
descent lessens the impact of the carrier dropping into the turnstile position
and reduces the noise from the impact.
Upon initial impact, the push-actuator moves down about two inches. It is
then lowered slowly, until it retracts completely, leaving the carrier on a pad
that rests on the turnstile base.
When a carrier is being dispatched from the station, the push-actuator lifts
up about seven inches to push the carrier further into the tube enclosure and
allow the vacuum to lift the tube into the upper station pipe and through the
system. The slide plate must be open for the push-rod to elevate a carrier.
The push-actuator and its motor remain stationary beneath the position at
the back-left corner where all carriers enter and exit the station.
Created partially with the opening left from the removal of the station-full
sensor, with additional holes drilled in the rear station wall, this air vent pro-
vides air intake from behind the station. It is part of the ventilation and air-
intake system that has been designed for noise-reduction and air contain-
ment.
The outlined area shows the position in the turnstile assembly from which
carriers are launched on a dispatch and into which incoming carriers are
received.
Located behind the rear-left compartment of the turnstile, the rear carrier
sensor confirms the presence of a carrier both after arrival and before dis-
patch.
When this sensor fails to detect a carrier, a "back sensor problem" or "expected
carrier at back sensor" alarm is sent to the SCC.
Fully sealed manifold collects air for dispatch operations.
Antennae at the top of each of the five carrier positions on the carousel
detects RFID-enabled carriers. Primary transformers at the top of the carousel
assembly connect to the RFID reader board, which connects to the main con-
trol board and to the display panel to relay RFID carrier information to station
users.
The air valve attached to the slide plate opens and closes as necessary to han-
dle vacuum return after a carrier is launched. Movement of the outer valve is
controlled by a motor-controlled gear two magnetic sensors that measure the
position of the valve opening.
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TATION DESIGN EXUS TATION COMPONENT DESCRIPTIONS
APR/2017