Agilent Technologies BioCel 1200, User Manual

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Chapter 2: BioCel overview
BioCel User Guide
28
In the diagram, dotted lines are control enable circuits and solid lines
are AC and DC power circuits. The dot-dash line indicates those
elements that lie inside the power panel. The dotted line between the
robot DC power supply and system DC power supply indicates that the
two power supplies are housed in the same box.
Main power The main AC power enters at the external connections and travels down
inside the corner post to the power panel. It passes through a main fuse,
through the main switch, and out of the power panel to the UPS.
Pre-UPS, pre-
emergency stop
current
If your BioCel includes environmental control or a clean room, one or
more electrical lines branch off before the UPS. These lines supply
current to the following options:
❑
Cooling and heating water baths
❑
Environmental controller console that houses the iSeries controllers
for the main BioCel (not for any separate environmental enclosures)
❑
Liconic incubators (environmental control, not transfer
mechanism)
❑
UV lights and hood lights
❑
Clean-room output fan
These options therefore receive pre-UPS, pre-emergency stop current.
They are not affected by emergency stops or interlocks but are also not
buffered by the UPS from power outages.
UPS connections
If there is more than one UPS, they are connected in series so that
current output from UPS 1 supplies the current input for UPS 2. The UPS,
or UPSs, provide current backup to the monitor, PC, and
communications hubs. If there is more than one computer and more
than one UPS, one computer is fed from one UPS and the other
computer is fed from the other UPS.
From the UPS, current is passed back into the power panel and through
the main switch to the rest of the BioCel. This means that when you turn
off the main switch, current is cut to the UPS, but it is also cut between
the UPS and the main part of the BioCel, preventing the BioCel and its
devices from draining the UPS. The UPS will continue to be drained by
the computer, monitor, and communication hubs, which is why the
shutdown procedure includes a step for turning off the UPS.
Pre-emergency stop
After the main switch, the electrical line enters a bank of connections in
the power panel known as the pre-emergency stop block. A pre-
emergency stop power strip is connected to this block. Devices wired
from the pre-emergency stop power strip do not have their power cut
when an emergency stop is activated. For example, the robot retains
power after activation of an emergency stop because its DC power is
supplied by the robot DC power supply fed from the pre-emergency stop
block.