Power Supply Unit; Connecting The Cables - ClearCube R1200 User Manual

Dual AC Input Module

Connecting the Cables

46 • Chassis and Blade Installation
DIM is not hot-swappable. Fuses on the DIM can be accessed by powering down the
chassis and removing the fan module.
CAUTION: DOUBLE POLE/NEUTRAL FUSING
The DIM employs fuses in both the neutral and hot lines. Please contact
ClearCube or a ClearCube-certified technician for assistance with
servicing or replacing these modules or replacing the fuses in them.
(DIM)
Figure 21 R4300 Power Modules
This section provides an overview of inter-chassis connections.
NOTE: If you choose to use pre-assembled cables, be sure that the cables for the
desktop employ and terminate all four twisted pairs. Standard Ethernet works
with only two of the four pairs connected, but the ClearCube C/Port operates
only when all four pairs of wire are used.
The R4300 or R4200 link the blades within each chassis to their respective user ports
and to control signals. In addition to the user port connections, three signal paths are
provided:
• Control Chain – The RS-485-based control and management chain between
chassis. A Control Chain contains one Primary controller—either an RMC or an
RMM. When an RMC is present in a Control Chain, it always asserts itself as
Primary, and RMMs on the chain all serve as Tertiary controllers. A Control Chain
can contain as many as 14 chassis.
• Admin Daisy Chain – The link between an Admin C/Port and the chassis served
by that Admin C/Port. An Admin Daisy Chain can connect from 1 to 14 chassis
within a single Control Chain, depending on the model of the connected C/Port.
The Admin Daisy Chain uses the same ClearCube proprietary data link that
connects blades to C/Ports.
• Spare Daisy Chain – The link between a Spare blade and the chassis served by
that Spare blade. A Spare Daisy Chain can connect from 1 to 14 chassis within a
single Control Chain, depending on the model of the connected C/Port. The Spare

Power Supply Unit

Fuses
R Series Data Center Products User's Guide, Rev. B
(PSU)