Service Manual i2000SR interface module
625798100.APS.5.doc Page 15 of 212
a collision with a carrier arriving from Lane 3. Lane 3 carriers
always have precedence over those traveling on Lane 2.
At this stop gate, a Tag Reader identifies the carrier and the IM
determines which of the following three scenarios is appropriate:
Off-line Carriers
1. If the stopped Off-line carrier was manually loaded, the
sample just introduced at either the routine or priority sample
input areas, the D2 Diverters (Lane 2/1 and Lane 3/1) are
activated and allows the carrier to travel on the small disk and
into Lane 1. The D2 diverters are operated by electro valve EV4.
2. If the stopped carrier is an Off-line type and contains a
sample tube that has been already sampled, the D2 and D3
diverters are set to route the carrier around the large disk and
return to Lane 4 (Output Lane). The D3 diverter is operated by
electro valve EV12.
On-Line Carriers
3. If the stopped carrier is an On-line carrier from the APS
Workcell, it must be returned to the track. In this case, the
diverters D2 (Lane 2/1 and Lane 3/1) and D3 activate and allow
the carrier to go back to the APS Track.
Gate 6 – (G6) – is an Output Gate located on Lane 4 and is
operated by electro valve EV13. This Type 2 gate is controlled by
an optical tube sensor that checks for the removal of the tube
from the carrier. The empty carrier is released to Lane 3 (input
area) and to Gate 7b. Gate 6 manages the release of empty
carriers required to re-supply the carriers for the routine (G7b)
and priority (G8) gates. Gate 7b and the diverter D1 manage the
queue of carriers in the priority sample area. If there is a shortage
of carriers, the priority sample area will have the precedence.
NOTE:
For a detailed description of the queue building sequence,
refer to the Initialization Sequence section.
Gate 7b (G7b) – is the Routine Input Gate located on Lane 3 and
is operated by electro valve EV14. This Type 2 gate is located at
Routine Manual Input position and controls the routing of
manually entered routine tubes and is controlled by an optical
tube sensor located at the entry position. The sensor is used to
verify presence of a tube in the carrier. In this case, Gate 5
operates to stop any carriers moving on Lane 2 and allows the
new carrier to enter by opening the diverter Gate D1, which
routes the carrier from Lane 3 to Lane 2. The D1 diverter is
operated by electro valve EV15.
The IM controls a Green/Yellow LED associated with this gate.
When the LED is yellow, the carrier at the gate is routed to the
Priority Input area (G8). Tubes must not be manually inserted
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