4.5.2
Installing Parallel Pull Chain and
CAN Control Wiring and
Connections
NOTE
RJ-45 Controller Area
Network
(CAN)
must
be
supplied
by the
customer
.
To install
wiring:
1. Verify the UPS
system
is
turned
off and all
power sources
are
removed.
See
Chapter
6, “UPS
Operating
Instructions",
for
shutdown
instr
uctions.
2. Installing Parallel
system, see
Figure 4-10
CAUTION
•
Parallel
system combined
input and
output
cable length should be in
accordance
with
the
following rule. It should be
designed
to
ensure
that wiring
impedance
from point of supply
to
UPS input and from UPS
output
to load
connection
for each UPS
module
in a
multi-module
system
is equal, or within a
tolerance
of
approximately
±10%.
This is to
ensure
appro
ximately
equal
current
sharing
when
in static
bypass mode
and
restrain input/output
high
frequency loop
current
of parallel
system. Suggest
that parallel
system combined
input and
output
cable
length
no less than 10m, 5m for input and 5m for
output.
Total length of 1A
=2A=3A=4A
1B=2B=3B=4B
1C=2C=3C=4C
•
If installing only two UPS
modules (redundant),
this
requirement
is no longer
required
as
eac
h
UPS is
capable
of
supporting
the full
bypass requirement. However,
this would
preclude fut
ure
e
xpansion.
• Ensure
that each UPS static
bypass
is fed from a single
common source,
as is an
e
xternal
bypass switch
if installed. If each UPS is fed with a
separate
rectifier
source, please consult
Eaton for advice on
compatibilit
y
.
3. To locate the
appropriate terminals
and review the wiring and
termination requirements,
see
paragraph
3.2.3, Table 4-2, Figure 4-5 to Figure 4-9.
P
ull
Chain
Figure 4-10. Pull Chain Terminal Block Connector
Assignments
T
able
4-2. Pull Chain
Connections
Pull Chain Terminal
Name Description
1
Pull Chain +
2
Pull Chain
–
Output: Backup control for parallel
operation.
Eaton 93E MK2 UPS (10-40kVA, 380/400/415V) Installation and Operation
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