SERIES IP511 INDUSTRIAL I/O PACK ISOLATED QUAD EIA/TIA-422B COMMUNICATION MODULE
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2.0 PREPARATION FOR USE
UNPACKING AND INSPECTION
Upon receipt of this product, inspect the shipping carton for
evidence of mishandling during transit. If the shipping carton is badly
damaged or water stained, request that the carrier's agent be present
when the carton is opened. If the carrier's agent is not present when
the carton is opened and the contents of the carton are damaged, keep
the carton and packing material for the agent's inspection.
For repairs to a product damaged in shipment, refer to the Acromag
Service Policy to obtain return instructions. It is suggested that
salvageable shipping cartons and packing material be saved for future
use in the event the product must be shipped.
This board is physically protected with
packing material and electrically protected
with an anti-static bag during shipment.
However, it is recommended that the board
be visually inspected for evidence of
mishandling prior to applying power.
The board utilizes static sensitive
components and should only be handled at
a static-safe workstation.
CARD CAGE CONSIDERATIONS
Refer to the specifications for loading and power requirements. Be
sure that the system power supplies are able to accommodate the
power requirements of the carrier board, plus the installed IP modules,
within the voltage tolerances specified.
IMPORTANT: Adequate air circulation must be provided to prevent a
temperature rise above the maximum operating temperature.
The dense packing of the IP modules to the carrier board restricts
air flow within the card cage and is cause for concern. Adequate air
circulation must be provided to prevent a temperature rise above the
maximum operating temperature and to prolong the life of the
electronics. If the installation is in an industrial environment and the
board is exposed to environmental air, careful consideration should be
given to air-filtering.
BOARD CONFIGURATION
Remove power from the board when installing IP modules, cables,
termination panels, and field wiring. Refer to Mechanical Assembly
Drawing 4501-434 and your IP module documentation for configuration
and assembly instructions. Model IP511 communica-tion boards
normally have no hardware jumpers or switches to configure for isolated
operation. However, there are power and ground jumpers available to
optionally power each port from the IP logic supply for non-isolated
operation. Likewise, network termination and bias resistors may be
included on the network and installed where appropriate (see Drawings
4501-581 & 4501-582).
A termination resistor SIP (120
Ω
) is installed in a socket on the board
for the receive data paths. This SIP can be easily removed or replaced
if required (see Drawing 4501-581 & 4501-582).
Network Termination & Bias Resistor Placement
You need to consider your network application carefully, and
remove or install network bias and termination resistors where
appropriate. The IP511 comes with a network termination (120
Ω
)
resistor SIP installed in a socket on the board at the receiver inputs
(RxD
±
). Termination resistors should only be installed at the ends of a
network and are usually placed at the far-most receiving end, and near
the driving end. Since the driving end transmitters of the IP511 are
always enabled, then termination resistors are not required between the
driver outputs. However, they are already installed in sockets between
the receiver inputs of the IP511, but should be removed if already
present on the network, or if connecting to the network via a short stub
off the main trunk.
Some network driver outputs (transmit path TxD
±
) may require that
network bias resistors (560
Ω
) be installed externally, if not already
included on your network. A network channel will require only one set of
bias resistors--usually positioned near the driving end and only where
the driving end transmitter may be disabled. The bias arrangement is
comprised of a 560
Ω
from the positive lead to +5V and a 560
Ω
from the
negative lead to common. The bias resistors will keep the transmit line
from floating and held in the idle state when the transmitter is disabled.
However, since the transmitters of the IP511 are always enabled, then
bias resistors are not required for a network of IP511 ports.
Failure to include bias and termination resistors where required will
hinder the performance. Likewise, failure to remove redundant
termination and bias resistors where required will significantly increase
current draw, and in some cases, may affect performance. Refer to
Drawing 4501-581 & 4501-582 for instructions.
Power Jumper Configuration
For isolated operation, each port must be supplied with an external
is5V power source (see Table 2.1) at the field side. When this
is not convenient, the port power and common may be jumpered to the
+5V logic supply and common for non-isolated operation. The board is
shipped with these jumpers (shorting bucks) installed and they must be
removed for isolated operation (see Drawing 4501-582 for location).
Because the ports are also isolated from each other, separate jumpers
are provided for the +5V and common of each port. Be sure to install or
remove these jumpers as required for your application. Refer to
Acromag part 1004-799 when ordering replacement jumpers.
CONNECTORS
IP Field I/O Connector (P2)
P2 provides the field I/O interface connections for mating IP
modules to the carrier board. P2 is a 50-pin female receptacle header
(AMP 173279-3 or equivalent) which mates to the male connector of the
carrier board (AMP 173280-3 or equivalent). This provides excellent
connection integrity and utilizes gold-plating in the mating area.
