Description and Operating Instructions
ETHERNET Twisted Pair Industrial
Hubs for ISO/DIN Rail
The rail hub RH1-TP supports a fast and reasonable network expansion. You can
connect up to four data terminal equipments or further twisted pair segments via
twisted pair.
For startup procedure just fit the rail hub
on an ISO/DIN rail, without any further configuration time. The V.24 voltage is supplied
via the terminal block and can be feed in
redundantly.
The terminal block contains an integrated
indicator contact, receiving error and warning messages of the rail hub which are
defined as digital signals. These signals e.g.
can be utilized as process messages by a
programmable logic control (PLC). The indicator contact becomes active as soon as
disturbances appear in the rail hubs, that is
when a power supply should fail or at least
one TP port reports a faulty link status or
has auto partitioned.
For diagnosis there are LEDs available
which indicate collisions, link status, segmentation, power and received data.
The railhub has four twisted pair (TP)
interfaces. It is possible to connect up to
four terminals or other TP segments using
TPs.
The module conforms to the specifications
of ISO/IEC standard 8802-3.
You will find a detailed description for construction of a local area network on network
planning and installation in the “Ethernet
manual“ (Order no. 943 320-011).
RH1-TP
Order No.
943 639-001
RH1-TP
P2
P1
P1
DA/STAT
3
1
4
2
Port 1 Port 2
Port 3
Port 4
Port 1 Ö Port 4
DIL Switch Settings:
Railhub
RH1-TP
Made in Germany
LA1 Ö LA4
Link Alarm
0 Disabled
1 Enabled
C
2
We have checked that the contents of the
technical publication agree with the hardware and software described. However, it is
not possible to rule out deviations completely, so we are unable to guarantee complete agreement. However, the details in the
technical publication are checked regularly.
Any corrections which prove necessary are
contained in subsequent editions. We are
grateful for suggestions for improvement.
We reserve the right to make technical
modifications.
Permission is not given for the circulation
or reproduction of this document, its use or
the passing on of its contents unless granted expressly. Contravention renders the
perpetrator liable for compensation for
damages. All rights reserved, in particular
in the case of patent grant or registration of
a utility or design.
Copyright © Richard Hirschmann GmbH &
Co 1998
All Rights Reserved
Note
We would point out that the content of
these operating instructions is not part of,
nor is it intended to amend an earlier or existing agreement, permit or legal relationship. All obligations on Hirschmann arise
from the respective purchasing agreement
which also contains the full warranty condi-
tions which have sole applicability. These
contractual warranty conditions are neither
extended nor restricted by comments in
these operating instructions.
We would furthermore point out that for
reasons of simplicity, these operating
instructions cannot describe every
conceivable problem associated with the
use of this equipment. Should you require
further information or should particular
problems occur which are not treated in
sufficient detail in the operating instructions, you can request the necessary information from your local Hirschmann sales
partner or directly from the Hirschmann
office (address: refer to chapter entitled
„Notes on CE identification“).
General
Electricity is used to operate this equipment. Comply in every detail with the safety
requirements specified in the operating
instructions regarding the voltages to
apply!
v
Warning!
If warning notes are ignored, it is
therefore possible for severe injuries
and/or material damage to occur.
Only appropriately qualified staff
should work on or near this equipment. Such staff must be thoroughly
acquainted with all the warnings
and maintenance measures contained in these operating instructions.
The proper and safe operation of
this equipment assumes proper
transport, appropriate storage and
assembly and careful operation and
maintenance.
Staff qualification
requirements
Qualified staff within the meaning of these
operating instructions or the warning notes
are persons familiar with setting up, assembling, starting up and operating this product
and who have appropriate qualifications to
cover their activities, such as:
– training or instruction/entitlement to
switch circuits and equipment/systems on
and off, ground them and identify them in
accordance with current safety standards;
– training or instruction in accordance with
current safety standards in looking after
and using appropriate safety equipment;
– first aid training.
Safety guidelines
v
Warning!
The RH1-TP units are designed for
operation with safe extra-low volta-
ge. Accordingly, only safe extra-low
voltages (SELV) to
IEC950/EN60950/VDE0805 may be
connected to the supply voltage
connections.
3
1. Functional description
1.1 GENERAL FUNCTIONS
Signal regeneration
The RH1-TP processes the signal shape and
amplitude of the data received.
Retiming
In order to prevent jitter increasing over
several segments, the RH1-TP retimes the
data to be transmitted.
Preamble regeneration
The RH1-TP supplements lost preamble bits
from data received to 64 bits (incl. the start
of frame delimiter (SFD)).
Fragment extension
Collisions can cause short fragments to
occur. If the RH1-TPreceives a fragment,
this is supplemented to give the minimum
length of 96 bits. This ensures reliable collision detection by all network participants.
Collision handling
If the RH1-TP detects a data collision, it
interrupts the transmission. For the
duration of the collision, the collided data
package is replaced by a jam signal to
ensure collision detection by the terminal
equipments.
Auto partitioning
Network failures can be caused by permanent occupancy, interruptured lines, lack of
terminating resistors, damaged cable insulation and frequent collisions due to electromagnetic interference. In order to protect
the network from such failures, the RH1-TP
in this case separates the segment in the
receiving direction from the rest of the network.
The RH1-TP has this auto partitioning function individually at each port. The other
ports can thus continue to be operated
without interference if one of the ports has
been auto partitioned. In the event of auto
partitioning, transmission continues into
the TP segment but reception at this port is
blocked.
With twisted pair, auto partitioning is activated if
– a data collision lasts longer than 105 µs or
– there are more than 64 consecutive data
collisions.
Reconnection
The segment is reconnected to the network
as soon as a package with the minimum
length of 51 µs is received without collision
at the relevant port, i.e. when the segment
is working properly again.
Jabber control
Due to a defective transceiver or LAN controller, for example, the network can be continuously occupied with data. To protect
against this, the RH1-TP interrupts reception
at the affected TP port after 5.5 ms for a
duration of 9.6 µs. This cycle (transmission
for 5,5 ms, interruption for 9,6 µs) is repeated until the end of the error (jabber lockup
protection).
1.2 SPECIFIC FUNCTIONS OF THE
TP INTERFACE
Link control
The RH1-TP monitors the connected TP line
segments for short-circuit or interrupt using
idle signals during frame pauses in accordance with IEEE standard 802.3 10BASE-T.
The RH1-TP does not transmit any data in a
TP segment from which it does not receive
an idle signals.
Note: A non-occupied interface is assessed
as a line interrupt. The TP line to terminal
equipment which is switched off is likewise
assessed as a line interrupt as the deenergised transceiver cannot transmit idle
signals.
Auto polarity exchange
If the reception line pair is incorrectly
connected (RD+ and RD- switched) polarity
is automatically reversed.
1.3 DISPLAY ELEMENTS
Equipment status
The two LEDs provide information about
the status which affects the function of the
entire RH1-TP.
P1 – Power 1 (green LED)
– lit: supply voltage 1 present
– lit not: – supply voltage 1 not present,
– hardware fault in RH1-TP
P2 – Power 2 (green LED)
– lit: supply voltage 2 present
– lit not: – supply voltage 2 not present,
– hardware fault in RH1-TP
Port Status
These groups of LEDs display port-related
information.
DA/STAT 1 to DA/STAT 4 - link status
of the TP ports (4 x green/yellow LED)
– lit yellow: RH1-TP receiving data
– lit green: RH1-TP receiving link test pul-
ses from TP segment,
– the TP segment connected is
working properly
– flashes
green: port has auto partitioned
– lit not: RH1-TP is not receiving any idle
signals from TP segment,
– the assigned TP port is not
connected,
– the equipment connected is
switched off,
– the TP line is interrupted or
short-circuited
1.4 CONTROLS
6-pin DIP switch
Using the 6-pin DIP switch on the top of the
RH1-TP housing
–the message about the link statuses can
be suppressed by the indicator contact on
a port-by-port basis. Using switches LA1
to LA4, the message about the link status
of ports 1 to 4 is suppressed. State on delivery: switch position 1 (ON), i.e. message
not suppressed.
Fig. 1: 6-pin DIP switch
about link status
Suppress message
via indicator contact
LA1
not connected
not connected
LA3
LA2
LA4
Port 1
Port 3
Port 2
Port 4
Off On
1.5 INTERFACES
TP connection
Four 8pole RJ45 sockets enable four independent TP segments to be connected.
– Pin configuraion of the RJ45 socket:
– TD+: Pin 3, TD-: Pin 6
– RD+: Pin 1, RD-: Pin 2
– remaining pins: not configured.
Fig. 2: Pin configuration TP interface
5-pin terminal block
The supply voltage and the indicator
contact are connected via a 5-pin terminal
block with screw locking mechanism.
v
Warning!
The RH1-TP equipment is designed
for operation with SELV. Only safe
extra-low voltages to
IEC950/EN60950/VDE0805 may
therefore be connected to the
supply voltage connections and to
the indicator contact.
Fig. 3: Pin configuration of 5-pin terminal
block
+24 V
+24 V *
Fault
L1+
L2+
M
F1
F2
n.c. Pin 8
n.c. Pin 7
TD- Pin 6
n.c. Pin 5
n.c. Pin 4
Pin 3TD+
Pin 2RDPin 1RD+
2. Configuration
2.1 STAND ALONE STRUCTURE
STAR SHAPED STRUCTURE
The RH1-TP enables connection of up to
four data terminal equipments or further
twisted pair segments via twisted pair.
2.2 EXPANSION OF EXISTING
NETWORKS
The rail hub RH1-TP gives you the possibility to expand your network in a fast and reasonable way, for example an existing rail
hub-/rail switch link.
Fig. 4: Stand-alone configuration of the
RH1-TP
– Voltage supply: The voltage supply can
be connected to be redundant. Both
inputs are decoupled. There is no load
distribution. With redundant supply, the
power pack supplies the RH1-TP alone
with the higher output voltage. The
supply voltage is electrically isolated from
the housing.
– Indicator contact: Contact interrupt
indicates the following by means of a
potential-free indicator contact (relay
contact, closed circuit):
– the failure of at least one of the two
supply voltages.
– a permanent fault in the hub for ISO/DIN
rail (internal 5 V DC voltage, supply voltage 1 or 2 not in the permissible range).
– the faulty link status of at least one TP
port.
The indication of the link state might be
masked on a port-by-port basis using
DIP switches.
– at least one port has auto partitioned.
Note: In the case of the voltage supply
being routed without redundancy, the RH1TP indicates the failure of a supply voltage.
You can prevent this message by feeding in
the supply voltage through both inputs.
twisted pair
line
F/O line
twisted pair
line
Rail Hub link
with redundant line
twisted pair
transceiver
DTE
RH1-
TP/FL
RH1-
TP/FL
RH1-
TP/FL
RH1-
TP/FL
Rail Hub
RH1-TP
automaton
Fig. 5: Expansion of a rail hub link
Rail Hub
RH1-TP
automaton
Rail Switch RS1-TP
Rail Hub
RH1-TP
Rail Hub
RH1-TP
twisted pair
100 m
DTE
transceiver
Fig. 6: Configuration with rail switch
RH1-TP
automaton
transceiver
PLC
twisted pair
line
DTE
5
3. Assembly, startup procedure
and dismantling
3.1 UNPACKING, CHECKING
– Check whether the package was delivered
complete (see scope of delivery).
– Check the individual parts for transport
damage.
v
Warning!
Use only undamaged parts!
3.2 ASSEMBLY
The equipment is delivered in a ready-tooperate condition. The following procedure
is appropriate for assembly:
– Check whether the switch pre-setting suits
your requirements.
– Pull the terminal block off the RH1-TP and
wire up the supply voltage and indicator
lines.
– Fit the RH1-TP on a 35 mm ISO/DIN rail to
DIN EN 50 022.
– Suspend the upper snap-in hook of the
RH1-TP in the ISO/DIN rail, insert a
screwdriver horizontally under the housing into the locking slide pull this downwards (cf. Fig. 8, dismantling) and press
the bottom of the module onto the ISO/
DIN rail until it locks in position (Fig. 7).
– Fit the signal lines.
Notes:
– The housing of the RH1-TP is grounded
via the ISO/DIN rail. There is no separate
ground connection.
– The screws in the lateral half-shells of the
housing may not be undone under any
circumstances.
– The shielding ground of the twisted pair
lines which can be connected is electrically connected to the housing.
Fig. 7: Assembling the RH1-TP
4. Further support
In the event of technical queries, please talk
to your local Hirschmann sales partner or
directly to the Hirschmann agency in your
country. You can find the addresses
3.4 DISMANTLING
To take the RH1-TP off the ISO/DIN rail, insert a screwdriver horizontally under the
housing into the locking slide, pull it (without tipping the screwdriver) downwards
and fold the RH1-TP upwards.
– on the Internet
(http://www.hirschmann.de)
Our hotline in Germany
Tel: +49-7127-14-1538 (Fax: -1542)
and our US support office
Tel. +800-225-0524
are also at your disposal.
Locking slide
RH1-TP
P2P1P1
DA/STAT
3
1
4
2
Port 1 Port 2
Port 3
Port 4
Fig. 8: Dismantling the RH1-TP
3.3 STARTUP PROCEDURE
You start up the RH1-TP by connecting the
supply voltage via the 5-pin terminal block.
Lock the terminal block with the locking
screw at the side.
5. Technical data
General data
Operating voltage DC 18 to 32 V safe extra-low voltage (SELV) (redundant inputs decoupled)
Current consumption typ. 80 mA at 24 VDC (without data)
max. 130 mA at 24 VDC (with data)
Overload current protection at input non-changeable thermal fuse
Dimensions W x H x D 40 mm x 125 mm x 80 mm (1.57 in x 4.92 in x 3.15 in)
Mass 530 g (1.167 lb)
Ambient temperature 0 ºC to + 60 ºC (32 ºF to + 140 ºF)
Storage temperature - 40 ºC to + 80 ºC (-40 ºF to + 176 ºF)
Humidity 10% to 90% (non condensing)
Protection class IP 30
Radio interference level EN 55022 Class B
Interference immunity EN 50082-2
Interfaces 4 ports in compliance to 10BASE-T with RJ45 connectors (shielded)
1 x 5 pole mountable terminal block
Notes on CE identification
The Twisted Pair Industrial Hubs
for ISO/DIN Rail comply with the
regulations of the following European directive:
89/336/EEC
Council Directive on the harmonisation of the legal regulations of
member states on electromagnetic
compatibility (amended by Directives 91/263/EEC, 92/31/EEC and
93/68/EEC).
Area used Requirements for
emitted interference interference immunity
Residential EN 50081-1: 1992 EN 50082-1: 1992
Industrial EN 50081-2: 1993 EN 50082-2: 1995
The product can be used in the residential
sphere (residential sphere, business and
trade sphere and small companies) and in
the industrial sphere.
The precondition for compliance with EMC
limit values is strict adherence to the construction guidelines specified in this
description and operating instructions and
in the “Ethernet manual“.
The EU declaration of conformity is kept
available for the responsible authorities in
accordance with the above-mentioned EU
directives at:
Richard Hirschmann GmbH & Co
Network Systems Division
Stuttgarter Straße 45-51
D-72654 Neckartenzlingen
Telephone ++49-7127-14-1538
Displays P1, P2: power
DA/STAT 1 to DA/STAT 4: data, collision, link status per port, segmentation
Network size
Transition TP-Port ↔ TP-Port
Propagation equivalent 95 m (312 ft)
Variability value 2 BT
TP line length (TP-Port ↔ TP-Port)
Length of a twisted pair segment max. 100 m (328 ft)
Scope of delivery
RH1-TP Twisted Pair Industrial Hub for ISO/DIN Rail incl.
terminal block for supply voltage
description and operating instructions
Order number
RH1-TP – Twisted Pair Industrial Hub
for ISO/DIN Rail 943 639-001
Accessories
Ethernet manual 943 320-011
039597001010998000
Richard Hirschmann GmbH & Co.
Network Systems Division
Stuttgarter Straße 45-51
D-72654 Neckartenzlingen
Tel. ++49-7127-14-1538
Printed in Germany
Subject to alterations
Loading...