6
Fig. 7: Redundant ring structure
redundant ring
RS1
RS1
RS1
RS1
RS2
RS2
RS2
RS2
RS2
RS2
RS2
RS1
ring closed by RS2 with
switch RM on position "ON"
RS2
RS2:
RS2-TX/TX
RS2-FX/FX
RS2-FX/FX ST
RS2-FX-SM/FX-SM
RS2-FX-SM/FX-LH
RS2-FX-LH/FX-LH
5pin terminal block
The supply voltage and the indicator
contact are connected via a 5pin terminal
block with screw locking mechanism.
z
Warning!
The RS2-…/… equipments are desi-
gned for operation with a safety
extra-low voltage.Thus, they may
only be connected to the supply vol-
tage connections and to the signal
contact with PELV circuits or
alternatively SELV circuits with the
voltage restrictions in accordance
with IEC/EN 60950.
– Voltage supply
: Redundant voltage sup-
plies are supported. Both inputs are
decoupled. There is no load distribution.
With redundant supply, the power pack
supplies the RS2-…/… only with the hig-
her output voltage. The supply voltage is
electrically isolated from the housing.
– Indicator contact:
The indicator contact is used to supervise
the functions of the RS2-…/… and thus
facilitates remote diagnosis.
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 RS2-…/… (inter-
nal 3,3 V DC voltage, supply voltage 1 or
2 < 18 V, ...).
– the faulty link status of at least one port.
The indication of the link state on the
RS2-…/… can be masked on a port-by-
port basis using the management soft-
ware.
State of delivery: there is no link test.
– self test error
The RS2-…/… in standby mode (slave)
can indicate the following states:
– interrupted control line
– short-circuited control line
– partner device running in standby mode
The RS2-…/… in normal mode (master)
can indicate the following states:
– short-circuited control line
– partner device running in normal mode
The RS2-…/… in RM mode can indicate
the following states:
– Ring monitoring is not possible, e. g.
during software initializing.
Note:
In the case of the voltage supply
being routed without redundancy, the RS2-
…/… indicates the failure of a supply volta-
ge. You can prevent this message by fee-
ding in the supply voltage through both
inputs.
Fig. 9: Pin configuration of 5pin terminal
block
Ground connection
The RS2-…/… is grounded via a separate
screw connection.
2. Configuration
2.1 LINE STRUCTURE
The RS2-…/… enables backbones in line
structures to be built up. Cascading is effec-
ted using the backbone ports (see Fig. 6).
2.2 REDUNDANT RING STRUCTURE
With the RM function (redundancy mana-
ger) of the RS2-…/…, MICE, MACH 3000 or
with an RM1 you can close the two ends of
a line structured backbone to form a
redundant ring.
+24 V
+24 V*
Fault
0 V
The RS2-…/… is integrated into the ring via
the backbone ports (ports 6 and 7). Within a
redundant ring any mixture of RS1, RS2-
…/…, MICE and MACH 3000 is possible. If
one section fails the recovery time is less
than 0.5 seconds for a ring containing up to
50 switches being cascaded and the ring
structure is changed back into a line structu-
re.
Note:
The „redundant ring“ function requi-
res the following settings for the ports 6
and 7: 100 Mbit/s, full duplex and autonego-
tiation off (= state of delivery).
2.3 REDUNDANT COUPLING OF NET-
WORK SEGMENTS
The built-in control intelligence of the RS2-
…/… allows the redundant coupling of net-
work segments. Fig. 8 illustrates the possi-
ble configurations.
The connection of two network segments is
realized via two seperate paths. The RS2-
…/… supporting the redundant connection
is configured using the standby DIP switch.
The RS2-…/… in the redundant line and the
RS2-…/… in the main line exchange their
operating states via the control line (cross
over TP cable).
After the failure of the main line the redun-
dant RS2-…/… enables the redundant line
immediately. Once the fault has been clea-
red on the main line, the RS2-…/… in the
main line notifies the redundant RS2-…/….
The main line will be enabled and the
redundant line will be disabled.
Connect each of the the control line
connectors to the „Stand by“ port.
Connect the main and the redundant
line each to port 1.
Note:
Using the Longhoul devices make
sure, that you conncet LH ports only to LH
ports (RS2-FX-SM/FX-LH port 7, RS2-FX-
LH/FX-LH ports 6+7) and SM ports only to
SM ports (RS2-FX-SM/FX-LH port 6).
