Siemens 7XV5651-0 A00 Series User manual

RS485-FO Converter (2 channel)
7XV5651-0xA00
for asynchron protocols up to 115 kBaud
Operating Instructions
Oct. 2006

Table of content
1 GENERAL INSTRUCTIONS...........................................................................................................4
1.1 Qualified Personnel.....................................................................................................................5
1.2 Safety Notes................................................................................................................................6
1.3 Intended Use...............................................................................................................................7
1.4 Explanation of the symbols at the device:...................................................................................7
1.5 Exclusion of liability .....................................................................................................................8
1.6 Copyright.....................................................................................................................................8
2 OPERATING INSTRUCTIONS .......................................................................................................9
2.1 Scope of Application....................................................................................................................9
2.2 General Data...............................................................................................................................9
2.3 Protocol transparency ...............................................................................................................10
2.4 Data transfer..............................................................................................................................10
3 TECHNICAL DATAS.....................................................................................................................11
3.1 Hardware features....................................................................................................................11
3.2 Safety Tests...............................................................................................................................12
3.3 Dielectric Tests..........................................................................................................................13
3.4 Interference Emission................................................................................................................13
3.5 Interference immunity................................................................................................................14
3.6 Climatic Stress tests..................................................................................................................15
3.7 Mechanical Stress Tests...........................................................................................................16
3.8 Dimension Drawings .................................................................................................................17
3.9 Ordering Data............................................................................................................................17
4 DESCRIPTION OF THE FUNCTIONAL UNIT..............................................................................18
4.1 Terminal Assignment.................................................................................................................18
4.2 Screw-type terminals X2, X7, X5...............................................................................................19
4.3 RS485-Connector X6................................................................................................................19
4.4 FO-Connections ........................................................................................................................20
4.5 Switch positions.........................................................................................................................20
4.6 Assignment Switch 1.................................................................................................................21
4.7 Assignment Switch 2.................................................................................................................21
5 INSTALLATION AND COMMISSIONING ....................................................................................22
5.1 Reference to Installation............................................................................................................22
5.2 Connection ................................................................................................................................22
5.2.1 Power supply X2...............................................................................................................23
5.2.2 Alarm relay terminals X7...................................................................................................23
5.2.3 Fibre Optic (FO) connections Rx, Tx................................................................................23
5.2.4 RS485-Bus connection X6 ...............................................................................................24
5.3 Commissioning..........................................................................................................................24
5.4 Maintenance..............................................................................................................................24
6 APPLICATIONS............................................................................................................................25
6.1 Optical line structure..................................................................................................................25
6.2 Bus structure with fibre optic spur.............................................................................................26
12.10.2006 RS485-FO Converter 2-channel Page 3 of 28

1 General Instructions
This manual includes the information required for the normal use of the
products described therein. It is intended for technically qualified
personnel which has been specially trained or has special knowledge in
the fields of protection-, instrumentation-, control-, and automatic control
engineering (called automation in the following).
The knowledge and the technically correct translation of the safety
instructions and warnings included in this manual are a prerequisite for
the safe installation and commissioning, as well as for safety during
operation and maintenance, of the product described. Only qualified
personnel, as defined in the following explanation, possess the technical
knowledge required to interpret correctly and to put into action for each
individual case the safety instructions and warnings given in this
document in a general manner.
This manual is an integral part of the scope of delivery. However, it
cannot take into account every detail on all types of the described
product and also every possible case regarding installation, operation or
maintenance. If further information is desired or in case special problems
should arise, which are not treated adequately in this document, it is
possible to obtain additional details from the local Siemens office or from
the addresses stated in the back of this manual.
Additionally, we point out that the content of this product documentation
is not part of or modifies any previous or existing agreement, promise, or
legal relationship.
All obligations by Siemens result from the respective purchase order
which also includes the complete and exclusively valid warranty
provision. The contractual warranty regulations are neither extended nor
limited by the statements in this document.
Page 4 of 28 RS485-FO Converter 2-channel 12.10.2006

1.1 Qualified Personnel
Tampering with the device/system or noncompliance with the safety
notices given in this manual may cause severe bodily injury or property
damage. Therefore any interventions on the device/system may only be
performed by adequately qualified personnel.
Qualified personnel as per the safety notices given in these instructions
or on the product itself is:
• personnel involved in planning and configuration activities and familiar
with the safety concepts used in automation engineering;
• operating personnel trained for working with automation systems and
familiar with the content of this manual as far as it deals with operational
aspects;
• commissioning and service personnel having adequate training and
qualification to repair this type of automation equipment and/or having
authorization to commission, release, ground and tag devices, systems
and electrical circuits.
12.10.2006 RS485-FO Converter 2-channel Page 5 of 28

1.2 Safety Notes
These operating instructions contain notes that are to be complied with
for your personal safety as well as to avoid property damages. These
notes are marked by a triangular warning symbol and the different
degrees of danger are categorized as follows:
Danger
Disregard of the corresponding precautionary
measures will cause death, severe bodiliy injury or
considerable property damage.
Warning
Disregard of the corresponding precautionary
measures may cause death, severe bodiliy injury
or considerable property damage.
Attention
Disregard of the corresponding precautionary
measures may lead to slight bodiliy injury or minor
property damage
Note
Shall draw your attention to special information on
the product, product handling or the corresponding
section of the documentation.
Qualified personnel
Commissioning and operation of the equipment is
to be performed by qualified personnel only. In the
context of safety notes in this manual, the term
qualified personnel refers to persons authorized to
perform commissioning, grounding and labelling of
devices, systems and electrical circuits.
Page 6 of 28 RS485-FO Converter 2-channel 12.10.2006

1.3 Intended Use
Please observe the following
Warning
The device must be operated only within the scope
of its intended use according to these operating
instructions and in connection with third-party
equipment or compounds recommended or
accepted by Siemens.
Faultless and safe operation of the product require
proper transport, storage, mounting and installation
as well as careful operation and maintenance.
1.4 Explanation of the symbols at the device:
Danger
Warning of a danger.
Please read the documentation.
To be operated only by qualified personnel.
Double insulation
12.10.2006 RS485-FO Converter 2-channel Page 7 of 28

1.5 Exclusion of liability
The contents of this document have been reviewed on their compliance
with the hardware and software described therein. Yet, deviations cannot
be excluded, so that we cannot guarantee full compliance. The
specifications in this document are, however, reviewed at regular
intervals. Necessary corrections will be included in the next edition. You
are invited to send us your suggestions for improvement.
1.6 Copyright
Copyright Siemens AG 2000. All rights reserved.
Transmission or reproduction of this document, as well as the use and
forwarding of its contents is not permitted without express written
authority. Offenders will be liable for damages. All rights, including rights
created by patent grant or registration of a utility model or design, are
reserved.
Subject to technical changes without notice.
Page 8 of 28 RS485-FO Converter 2-channel 12.10.2006

2 Operating Instructions
2.1 Scope of Application
The RS485 / FO Signal Converter is used for optical connection of up to
31 units with a bus-enabled electric RS485 interface to an FO
connection that leads, e.g., to a star coupler, thus allowing to establish
an interference-immune connection between the field devices and the
centralized operating unit.
2.2 General Data
The signal converter has a plastic housing that can be snapped onto a
DIN EN 50022 mounting rail. The optical interface is equipped with
BOFC ST-connectors and designed for signals with a wavelength of 820
nm. The differential RS485 bus interface to the terminal units is
connected via a 2-pole terminal block or a 9-pin SubD socket. Up to 31
devices can be connected to the bus. For point-to-point connection, the
line can be terminated using a resistor terminator. The auxiliary power
supply is fed in via 2 terminals. Because of its extremely wide auxiliary
voltage range (DC 24 - 250 V and AC 60 - 250 V), the converter can be
connected without switchover to all common types of station batteries
and AC mains voltage supplies. The front cover has LEDs for indication
of the operating voltage status (green LED) and for the data flow in all
directions (yellow LED).
The readiness for service of the unit is indicated by means of a potential-
free signalling contact (terminals 1,2) that can be used to communicate
the following fault conditions to a control center:
• No supply voltage
• Failure of internal power supply
When a fault condition is present, the contact is closed.
RS485/FO signal converters are available in two versions:
• one-channel version with BOFC connector: 7XV5650-0BA00
• two-channel version with BOFC connector: 7XV5651-0BA00
12.10.2006 RS485-FO Converter 2-channel Page 9 of 28

2.3 Protocol transparency
Data transmission by the RS485 / FO signal converter is protocol-
transparent in both directions, thus allowing the use of the converter for
all common protocols (e.g. IEC protocol, DIGSI etc.) from 9600 bauds up
to 115 kbauds.
2.4 Data transfer
The RS485 interface, which may be connected as a bus, is a two wire
half duplex interface i.e. one can only receive or transmit at one point in
time. This interface is only suitable in master/slave configurations, with a
singe master.
As up to 32 devices (including Master) are all communicating on the
RS485 bus, they must all be set to the same baud rate and data format.
Each slave must have a different device address. Within the system,
only one Master may be active, and only one slave may respond.
The logic of the optical interface is positive (Light OFF in idle state),
incoming light signals are treated as active = 1 (high). For use in systems
operating with a negative logic, the converter can be switched over to
negative logic by means of a switch that is accessible from outside.
Inversion of the logic applies to both the optical input and the optical
output of this interface. On delivery, the converter is set to positive logic
(Light OFF in idle state).
In the quiescent state (no data transfer), the RS485 interface is in the
receive mode, and the optical module is in the transmit mode, i.e. data
received by the TS485 interface are transmitted by the optical output.
From the optical interface, the data direction is controlled by a baud rate-
dependent logic. In idle state (no data transfer) the optical module is in
Transmit mode.
On arrival of optical data, the first signal edge reverses the data
direction. On receiving the stop bit, the data direction is immediately
reset to its previous mode.
Page 10 of 28 RS485-FO Converter 2-channel 12.10.2006

3 Technical datas
3.1 Hardware features
Mechanical design
Housing
Dimensions
Weight
Degree of protection
Housing
Terminals
Plastic, EG90
see dimensional drawings
approx. 250g
according EN60529, IEC60529
IP 51 plasic
IP 20
Auxiliary voltage UH
Rated input voltage
- DC voltage
- AC voltage
Fuse internal
Class of protection (depends on
input voltage)
Power consumption
- DC voltage
- AC voltage
24 V - 250 V DC ±20 %
24 V - 230 V AC ±20 % / 45-65 Hz
1,25 A slow blow (not changeable)
III
With UH= UHN; typical value
3 W
2.5 W; 3.5 VA
Alarm relay
1 Relay
Connector
Test voltage
Switching voltage (nominal value)
Switching capability
Switching current
Fault indicator
MSR-Relay, 1 NC (open) contact,
potential free
2-pol. Phönix terminal
3,7 kVeff
250 V DC
20 W/VA
1 A permanent
LED green: 5 V o.k,
RS485-interface
Connector
Baudrate
Test voltage
9-pol. SUB-D, socket or
2-pole Phoenix terminal
9600 - 115200 bauds
2 kV AC towards other connections
12.10.2006 RS485-FO Converter 2-channel Page 11 of 28

Optical interfaces
Optical inputs / outputs
Optical connectors
Laser class 1 acc. EN60825-1/-2
Data flow indication
Wave length
Launched power
Sensitivity
Optical budget
Maximum distance spanned
Baud rates
2 transmitter, 2 receiver
Factory setting:
Light OFF in idle state
BFOC ST-connectors (plastic
protective caps)
yellow LED: Receiving data ch. 1
yellow LED: Transmitting data ch. 2
820 nm
-19dBm with 50/125µm
multimode fibre
-15dBm with 62,5/125µm
multimode fibre
-6,2dBm with 200µm HCS fibre
-30dBm
10dB (+3 dB system budget-
safety margin)
3.0 km with 62,5/125µm
multimode fibre
1.5 km in combination with
SIPROTEC systems
with 62,5/125µm
multimode fibre
3.5 m with 980/1000 plastic fibre
9600 - 115200 Baud
3.2 Safety Tests
Safety tests
according DIN EN 61010 Part1
Overvoltage category
Degree of pollution
Fire resistance classification
according to UL 94
III
2
V0
Page 12 of 28 RS485-FO Converter 2-channel 12.10.2006

3.3 Dielectric Tests
Dielectric tests
EN61010 IEC 255-5:
ANSI/IEEE C37.90.0
Voltage test (routine test)
Auxiliary power to relay
Auxiliary power to RS485
interface
Relay to RS485 interface
Surge voltage test (type test)
VDE 0435, Pt. 303
Auxiliary power to relay
Auxiliary power to RS485
interface
Relay to RS485 interface
5,25 kV DC / 1s (with bypass
capacitors)
3,7 kV AC / 50Hz / 1s (without
bypass capacitors)
5 kV (peak); 1,2/50 µs; 0,5 J;
3 pos. and 3 neg. surges in
intervals of 5 s
all circuits, class III
(not on open contacts)
3.4 Interference Emission
Interference Emission
Standard: EN 50081-1
Conducted interference,
only power supply voltage
IEC CISPR 22, EN55022
VDE 0878 Teil 22
Radio interference field strength
IEC CISPR 22, EN55022
VDE 0878 Teil 22
150 kHz to 30 MHz
Limit class B
Limit class B
30 MHz to 1000 MHz
Limit class B
Limit class B
12.10.2006 RS485-FO Converter 2-channel Page 13 of 28

3.5 Interference immunity
Interference immunity
IEC 255-22 (product standards)
EN 61010-1 (Generic standard)
High frequency test
IEC 60255-22-1, class III
VDE 0435 Teil 303, Klasse III
Electrostatic discharge (ESD)
IEC 61000-4-2, class III
IEC 60255-22-2 class III
EN 61000-4-2, of degree 4
Irradiation with HF field, non
modulated
IEC 60255-22-3, Klasse III
Irradiation with HF field,
amplitude modulated
IEC 61000-4-3
ENV 50140, class III
EN 61000-4-3
Irradiation with HF field,
pulse modulated
IEC 61000-4-3
ENV 50140 / ENV50204,
class III
Fast transient disturbance / burst
IEC 61000-4-4, class IV
IEC 60255-22-4, class IV
EN 61000-4-4, class IV
1 MHz; 400 surges per s; dur. 2 s
2,5 kV longit.voltage;
1,0 kV transverse voltage
4 kV contact discharge,
8 kV air discharge,
both polarities;
150 pF; Ri = 330 Ohm
10 V/m; 27 MHz to 500 MHz
10 V/m; 80 MHz to 1000 MHz;
80% AM; 1kHz
10 V/m; 900 MHz; repetition
frequency 200 Hz;
duty cycle of 50% or duty
cycle of 100%
On auxiliary voltage inputs
4 kV; 5/50 ns; 5 kHz;
burst duration 15 ms
Repetition 300 ms;
both polarities;
Ri = 50 Ohm;
Test duration 1 min
Page 14 of 28 RS485-FO Converter 2-channel 12.10.2006

Fast transient disturbance / burst
IEC 61000-4-4, Klasse III
IEC 60255-22-4, Klasse III
EN 61000-4-4, Klasse III
Line contucted HF, amplitude
modulated
IEC 61000-4-6, class III
EN 61000-4-6, class III
Immunity to power frequency
magnetic field
EN 61000-4-8, class IV
On signal lines
2 kV; 5/50 ns; 5 kHz;
burst duration 15 ms
Repetition 300 ms;
both polarities;
Ri = 50 Ohm;
Test duration 1 min
10 V; 150 kHz to 80 MHz;
80% AM;
1 kHz
30 A/m, permanent;
300 A/m during 3 s;
50 Hz
3.6 Climatic Stress tests
Ambient Temperatures
EN 60068-2-1 and -2-2
Recommended operating
temperature
Limiting temporary (transient)
operating
Limiting temperatutre during
storage (packing from the factory)
Limiting temperature during
transport (packing from factory)
Permissible humidity
-5°C to +55°C (+23° F to +131°F)
-20°C to +70°C (-4° F to +158°F)
-25°C to +55°C (-13° F to +131°F)
-25°C to +70°C (-13° F to +158°F)
mean value per year < 75%
relative humidity,
30 days per yaer 95% rel. humidity,
condensation not permissible!
12.10.2006 RS485-FO Converter 2-channel Page 15 of 28

3.7 Mechanical Stress Tests
Vibration and shock during
operation
Vibration
IEC 60255-21-1, class 1
IEC 60068-2-6
Shock
IEC 60255-21-2, class 1
Seismic vibration
IEC 60255-21-2, class 1
IEC 60068-3-3
sinusoidal 10 Hz to 60 Hz:
±0,035mm
amplitude.; 60Hz - 150 Hz: 0,5g
acceleration
Frequency sweep rate 10
oktave/min
20 cycles in 3 orthogonal axes,
semi-sinusoidal
Acceleration 5 g, duration 11 ms, 3
shocks in each direction of 3
orthogonal axes
sinusoidal
1 Hz to 8 Hz: +3,5mm amplitude
(horizontal axis)
1 Hz to 8 Hz: +1,5mm amplitude
(vertical axis)
8 Hz to 35 Hz: 1g acceleration
(horizontal axis)
8 Hz to 35 Hz: 0,5g acceleration
(vertical axis)
Frequency sweep rate 1 octave /
min
1 cycle in 3 orthogonal axes
Page 16 of 28 RS485-FO Converter 2-channel 12.10.2006

3.8 Dimension Drawings
N/L-
RS 485
RS485-LWL-Converter 7XV5651-0AA00
SERIES: A4-K7-655430
C E 5
5
24-250V DC
60-230V AC
RUN
T1 R1
UH
UH
L1/L+12
M1
AB
RCV1
T2R2
90
75
105
90
90
Fig. 1: Dimension Drawings
3.9 Ordering Data
Name Order-No.
RS485-FO Converter 7 X V 5651- 0 A00
with 2 FO-Interfaces
and 1 RS485-Interface
OpticalIn-/Output
BFOC (ST)-connector B
12.10.2006 RS485-FO Converter 2-channel Page 17 of 28

4 Description of the Functional Unit
The housed signal converter is a hard-wired and tested functional unit.
It is provided with a snap-on mounting device for a 35 mm
DIN EN 50022 rail and with screw-type terminals for safe connection of
the auxiliary power supply. The RS485 interface is connected either to
screw-type terminals or to the 9-pin SubD socket. The two fiber-optic
channels are connected by BOFC ST-terminals. The unit is free of
silicone and halogen as well as flame-retardant.
4.1 Terminal Assignment
N/L-
RS 485
RS485-LWL-Converter 7XV5651-0AA00
SERIES: A4-K7-655430
C E 5
5
24-250V DC
60-230V AC
RUN
T1 R1
UH
UH
L1/L+12
M1
AB
RCV1
X6 X2X7X5
R2 T2 Tx: FO transmitter
Rx: FO receiver
X2: Power supply
X5: RS485 terminals
X6: RS485 connector
9pin SubD plug
X7: Signalling contact
Fig. 2: Terminal Assignment
Page 18 of 28 RS485-FO Converter 2-channel 12.10.2006

4.2 Screw-type terminals X2, X7, X5
Pin Assignment Symbol
X2, Pin 1 Power supply pin 1 (L+) DC: L+ AC: L
X2, Pin 2 Power supply pin 2 (L-) DC: L- AC: N
X7, Pin 1 Relay contact pin 1 1
X7, Pin 2 Relay contact pin 2 2
X5, Pin 1 RS485 connector pin A A
X5, Pin 2 RS485 connector pin B B
Tab. 1: Screw-type terminals X2, X7, X5
4.3 RS485-Connector X6
Pin Bedeutung Abkürzung
1 not connected
2 not connected
3 RS485-Connector Pin A A
4 not connected
5 Signal ground GND
6 Power supply +5V DC VCC
7 not connected
8 RS485-Connector Pin B B
9 not connected
Tab. 2: RS485-Connector Sub-D 9-pol. female X6
12.10.2006 RS485-FO Converter 2-channel Page 19 of 28

4.4 FO-Connections
The receiving optical connectors are marked with R1/2, the transmitting
connections with T1/2 (see Fig. 2).
ATTENTION! Please tight the mechanical screw connections of the FO -
cables with FSMA plug carefully and only by hand (do not use tools).
The ST plugs are to be shifted with the lateral nose into the groove of the
device connection and locked afterwards. During the installation of the
FO - cables the bending radius specified for the cable is to be kept.
4.5 Switch positions
The DIP switches can be actuated from outside.
OFF
X6 X2X7
S1
ON
X5
1234567812345678
OFFON
S2
Down view
Fig. 3: Switch positions S1, S2
Page 20 of 28 RS485-FO Converter 2-channel 12.10.2006