Grounding - Samsung iDCS 100 Installation Section

iDCS 100
TECHNICAL MANUAL
equipment damage. If the expansion cabinet is being added to an
existing system make sure the switch on the MEM card is turned ON
before powering down the KSU to keep the customer data intact.
3. Connect the expansion cabinet to the basic KSU by plugging free end of the ribbon
cable into the socket on the KSU motherboard
4. Connect the ground wire from the expansion cabinet to the screw in the top right
hand corner of the KSU motherboard
5. Connect the two red and green cable pairs from the expansion cabinet to the
connectors of the KSU motherboard
6. Install any new cards in the expansion cabinet and restore power to the system.

2.4 GROUNDING

An equipment grounding conductor that is not smaller in size than the ungrounded
branch-circuit supply conductors is to be installed as part of the circuit that supplies the
product or system. Bare, covered, or insulated grounding conductors are acceptable.
Individually covered or insulated equipment grounding conductors shall have a
continuous outer finish that is either green or green with one or more yellow stripes.
The equipment grounding conductor is to be connected to ground at the service
equipment.
The attachment-plug receptacles in the vicinity of the product or system are all to be of
a grounding type, and the equipment grounding conductors serving these receptacles
are to be connected to earth ground at the service equipment.
WARNING: HIGH LEAKAGE CURRENT! Earth connection is essential before
connecting supply.
The iDCS 100 system requires that a supplementary
connected to the system. This is the preferred method of grounding the iDCS 100. It
has been observed that the third wire ground may be inferior or can contain noise that
may prevent the digital data bus from canceling out noise. This may result in erratic
operation of the iDCS 100. Another problem that has occurred is that some UPS battery
systems do not pass the ground through to the power cord resulting in no ground to
the system. The grounding lug on the bottom of the left side of the cabinet must be
connected to one of the following: bonded building steel, cold water pipe or a ground
rod using at least #16 AWG copper wire
between cabinets in a multiple cabinet system must also be at least #16 AWG copper
wire. The third wire AC ground or FG is connected to the system frame via the ground
strap from the ground connector on the AC socket.
(see Figure
(see Figure 2–4).
(see Figure 2–3).
(see below)
(see Figure 2–5). Additionally, the ground
2.2
INSTALLATION
PART 2 JUNE 2002
2–3).
earth ground be
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