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© PHOENIX CONTACT 2009-11-16102986_en_03 INTERFACE PSI-REP-PROFIBUS/12MB Data sheet 1D e s c r i p t i o n The PSI-REP-PROFIBUS/12MB DIN rail-mountable modular PROFIBUS repeater is designed to meet the high requirements of high-performance PROFIBUS systems. The device is snapped onto standard DIN rails in the control cabinet and supplied with 24 V DC. The main areas of application are: – Electrical isolation/bus segmentation – Increasing system availability – Increasing the range – Increasing transmission speeds – Extending the number of devices to n x 32 – Implementing hybrid/network structures – Modular PROFIBUS hubs The following features of the repeater are particularly outstanding: – Transmission speed of up to 12 Mbps – Automatic transmit/receive changeover – High-quality 4-way isolation – Integrated surge protection with transient discharge to the DIN rail – 24 V DC control cabinet supp ly voltage, with user- friendly connection via COMBICON plug-in screw terminal blocks –B i t r e t i m i n g – Bit oversampling – Modular station structure, even with PSI-MOS-... fiber optic converters
1.1 Bit retiming
PROFIBUS signals with a bit distortion of up to 35% can be reliably detected using the bit retiming function and are converted to their original bit form before being transferred to the next segment. This data processing function means that a virtually unlimited number of repeaters can be aligned without an impermissible level of bit distortion.
1.2 Bit oversampling
The bit oversampling function can be used to detect and filter malfunctions so that they are not transferred to the next segment. Repeater for PROFIBUS systems up to 12 Mbps If you have any technical problems, which you cannot resolve with the aid of this documentation, please contact us during the usual office hours at: PSI hotline: +49 - 52 35 - 31 98 90 Fax: +49 - 52 35 - 33 09 99 E-mail: interface-service@phoenixcontact.com Make sure you always use the latest documentation. It can be downloaded at www.phoenixcontact.net/download. This data sheet is valid for all products listed on the following page:
102986_en_03 PHOENIX CONTACT 2 Table of contents 2O r d e r i n g d a t a Repeater Description Type Order No. Pcs./Pkt. Modular PROFIBUS repeater, for electrical isolation and increasing the range in PROFIBUS systems, 4-way isolation, DIN-rail mountable PSI-REP-PROFIBUS/12MB 2708863 1 Accessories Description Type Order No. Pcs./Pkt. System power supply unit for supplying a modular star coupler topology MINI-SYS-PS 100-240AC/24DC/1.5 2866983 1 System power supply unit for supplying a modular star coupler topology, for potentially explosive areas MINI-PS-100-240AC/24DC/1.5/EX 2866653 1 End clamps CLIPFIX 35 3022218 50 DIN rail connector, power supply and data (2 per device) ME 17,5 TBUS 1,5/ 5-ST-3,81 GN 2709561 10 PROFIBUS cable, Fast Connect type, up to 12 Mbps PSM-CABLE-PROFIB/FC 2744652 1 Small, angled PROFIBUS connector with screw connection SUBCON-PLUS-PROFIB/SC2 2708232 1 Small, angled PROFIBUS connector with screw connection and additional PG connection SUBCON-PLUS-PROFIB/PG/SC2 2708245 1 PROFIBUS connector up to 12 Mbps, angled version, integrated termination resistor that can be connected externally, IDC terminal block connection SUBCON-PLUS-PROFIB/FC 90 2313274 1 PROFIBUS connector up to 12 Mbps, angled version, integrated termination resistor that can be connected externally, with PG D-SUB female connector for a programming device, IDC terminal block connection SUBCON-PLUS-PROFIB/PG/FC 90 2313287 1
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3 Technical data
Power supply 24 V DC (±20% via COMBIC ON plug-in screw terminal block) Frequency DC Nominal current consumption 90 mA (at 24 V DC) Ready-to-operate indicator "VCC" LED (green) Star coupler configuration 10, maximum Serial RS-485 interface PROFIBUS according to IEC 61158, 2-wire Transmission channels 2 (1/1), TD, RD Operating mode Half duplex Data format/encoding UART/NRZ (11 bits) Data direction changeover Automatic, minimum station response time 2 bits Transmission speed (can be set via DIP switches) Auto- baud kbps 187.5 kbps 500 kbps 1500 kbps 3000/6000/12,000 kbps Transmission length (depending on transmission speed and cable type) 1200 m 1000 m 400 m 200 m 100 m Transmission medium 2-wire twisted pair, shielded Connection 9-pos. D-SUB female connector Connection voltage/current 5 (±0.25) V DC, 50 mA General data Bit distortion input ±35%, maximum Bit distortion output < 6.25% Bit delay ≤ 11 bits (FILTER MODE), 1 bit (DIRECT MODE) Electrical isolation PROFIBUS (A) // PROFIBUS (B) // power supply // DIN rail connector Test voltage 1.5 kV rms, 50 Hz, 1 min. Alarm output 60 V DC/42 V AC, 1 A, maximum Status and diagnostic indicators Power supply (VCC) Transmit/receive data, port A (TD/RD) Transmission error, port A and port B (ERR A, ERR B) Housing material PA V0, green Ambient temperature Operation Storage/transport -20°C ... +60°C -40°C ... +85°C Humidity 10% ... 95%, no condensation Dimensions (W x H x D) 35 mm x 99 mm x 105 mm Degree of protection IP20 Weight 200 g, approximately MTBF according to Telcordia standard Ambient temperature 25°C Ambient temperature 40°C 1136 years 238 years Chloroform test Free from substances that would hinder coating with paint or varnish (according to VW/Audi/Seat specification) Vibration resistance 5g according to IEC 60068-2-6, 2. 5 h each in x, y, and z direction, criterion A Shock resistance 15g according to IEC 60068-2-27 with 11 ms pulse length, criterion C Free fall 1 m without packaging according to IEC 60068-2-32 Air and creepage distances DIN EN 50178, DIN EN 60950 Tests/approvals CE c UL/CUL 508 u UL 508/C-UL 508 Ex X II 3G Ex nAC IIC T4 X
102986_en_03 PHOENIX CONTACT 4 Conformance with EMC Directive 2004/108/EC and Low Voltage Directive 2006/95/EC Noise immunity test according to EN 61000-6-21 Electrostatic discharge (ESD) Air discharge Contact discharge EN 61000-4-2 Criterion B2 8 kV 6 kV Electromagnetic HF field Amplitude modulation EN 61000-4-3 Criterion A
10 V/m
Fast transients (burst) Signal Power supply EN 61000-4-4 Criterion B2 2 kV/5 kHz 2 kV/5 kHz Surge current load (surge) Signal Power supply EN 61000-4-5 Criterion B 1 kV/12 Ω 0.5 kV/2 Ω Conducted interference EN 61000-4-6 Criterion A3 10 V, 80% AM 1 kHz Noise emission test according to EN 61000-6-4 Noise emission of housing EN 550114 Class A5
1 EN 61000 corresponds to IEC 61000
2 Criterion B: Temporary adverse effects on the operat ing behavior, which the device corrects automatically. 3 Criterion A: Normal operating beha vior within the specified limits.
4 EN 55011 corresponds to CISPR11
5 Class A: Industrial application, wi thout special installation measures.
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4 Safety regulations and installation notes
4.1 Installation and operation
Follow the installation instructions. When installing and operating the device, the applicable safety directives (including national safety directives), accident prevention regulations, as well as general technical regulations must be observed. Do not repair the device yourself, replace it with an equivalent device. Repairs may only be carried out by the manufacturer. For the safety data, please refer to the operating instructions and certificates (EC-type examination certificate, other approvals, if necessary).
4.2 Installation in zone 2
Observe the specified conditions for use in potentially explosive areas. Installation in areas with a danger of dust explosions NOTE: Installation, operation, and maintenance may only be carried out by qualified specialist personnel. NOTE: The device must not be opened or modified apart from the configuration of the DIP switches. NOTE: The switches that can be accessed may only be actuated when the power supply to the device is disconnected. NOTE: The IP20 degree of protection (IEC 60529/EN 60529) of the device is intended for use in a clean and dry environment. The device must not be subject to mechanical strain and/or thermal loads, which exceed the limits described. WARNING: The PSI-REP-PROFIBUS/12MB module is designed for SELV operation according to IEC 60950/EN 60950/VDE 0805. The module may only be connected to devices, which meet the requirements of EN 60950. WARNING: Explosion hazard The device is designed for installation in zone 2 potentially explosive areas. WARNING: Explosion hazard Install the device in suitable housing with IP54 protection, minimum, that meets the requirements of EN 60079-15. Observe the requirements of EN 60079-14. WARNING: Explosion hazard Disconnect the block power supply before: – Snapping it on or disconnecting it. – Connecting or disconnecting cables. WARNING: Explosion hazard Only devices which are designed for operation in zone 2 potentially explosive areas and are suitable for the conditions at the installation location may be connected to the supply and signal circuits in zone 2. WARNING: Explosion hazard The device must be stopped and immediately removed from the Ex area if it is damaged or was subject to an impermissible load or stored incorrectly or if it malfunctions. WARNING: Explosion hazard The device is not designed for installation in areas with a danger of dust explosions. If dust is present, install the device in suitable, approved housing.
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5 Applications
The PSI-REP-PROFIBUS/12MB repeater can be used to create network topologies that are ideally adapted to the relevant application. The limits set by the PROFIBUS standard, which specifies the electrical properties of PROFIBUS, are thus extended. This standard defines the following basic specifications: – Maximum of 32 devices per potential segment – Only (linear) bus structure permitted – Maximum bus cable length of 1200 m – Maximum branch line length of 5 m without termination resistor (depending on the transmission speed) – Bus cable termination at th e start and end of the bus cable Example applications for repeaters A segment can be created as an active branch, which can comprise the full bus cable length and a maximum of 31 devices. Electrical isolation and bus segmentation using repeaters enables the permissible bus cable length to be multiplied and the number of devices to be extended to n x 32, since the total number of devices of the PROFIBUS specification applies in each potential segment. The repeater supports higher transmission speeds by subdividing into shorter segment lengths. For example, a 200 m long PROFIBUS system can only be operated at a transmission speed of 1.5 Mbps. The use of a repeater after 100 m means that 8 times the performance can be achieved, i.e., 12 Mbps. Hybrid/network structures, star, and tree structures can be created using the PSI-REP-PROFIBUS/12MB modular repeater. A freely selectable installation concept, independent of the restrictive linear structure, is thus possible. The repeaters can be extended using PSI-MOS-PROFIB/FO... fiber optic converters for PROFIBUS systems. In addition, the repeaters can be combined and thus configured to form a modular PROFIBUS hub. Please note that in each potential segment, the port of a repeater must be considered as a device. 100m PROFIBUS 12 MBit/s 100m Stub line Max. 31 devices = Switch on bus termination resistor = Switch on bus termination resistor Linear structure Max. 30 devicesMax. 30 devices Star structure = Switch on bus termination resistor Tree structure = Switch on bus termination resistor
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6 Function elements
Figure 3 Function elements 1 24 V DC supply voltage connection 2 0 V DC supply voltage connection
3 Switch contact, connection 11
4 Switch contact, connection 12
5 "VCC" LED 6 "TD" LED 7 "RD" LED 8 9-pos. D-SUB: PROFIBUS interface (port A) 9 "ERR A" LED 10 "ERR B" LED 11 9-pos. D-SUB: PROFIBUS interface (port B) Diagnostic and status indicators 102964B002 VCC TD RD Port A ERR B ERR A PSI-REP-PROFIB/12MB Ord.-No. 27 08 863 21 3 4 Port B Des. Color Meaning VCC Green Ready-to-operate TD Yellow Transmit data dynamic port A RD Green Receive data dynamic port A ERR A Red Transmission error port A ERR B Red Transmission error port B
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7 Setting the DIP switches
The DIP switches are located under the cap on the port B interface.
- Insert a small screwdriver into the slot on the bottom of the cap and lever it off. Figure 4 Setting the DIP switches The tables in Section 7.1 and 7.2 provide an overview of the DIP switch functions. By default upon delivery, all DIP switches are in the "OFF" position.
7.1 Setting the tr ansmission speed
- Set the transmission speed using DIP switches 1 to 4.
7.2 Setting the operating mode
In FILTER mode (DIP 5 = "OFF"), the repeater filters out damaged telegrams. This operating mode ensures maximum immunity to interference and prevents unnecessary network load due to damaged telegrams or resent telegrams. The bit delay caused by the repeater is 11 bits, which must be taken into consideration in the cable configuration (see "Cable configuration" on page 10). In DIRECT mode (DIP 5 = "ON"), the filter function is not available. The bit delay of 1 bit does not usually have to be taken into consideration in the cable configuration. If several repeaters are connected to a star structure via the DIN rail connector, there is no additional bit delay when distributing the data signal via the DIN rail connector. The corresponding bit delay must only be taken into consideration when the telegram is received at one of the D-SUB ports (A or B). The direction (master or slave) from which the telegram is received at the repeater is therefore not important. NOTE: Electrostatic discharge The device contains components that can be damaged or destroyed by electrostatic discharge. When handling the device, observe the necessary safety precautions against electrostatic discharge (ESD) according to EN 61340-5-1 and EN 61340-5-2. 102986C003 TD ERR A ERR B Port A ON123456 PORT B S1...S6 12345 ON NOTE: Set all connected PROFIBUS devices to the same data rate Transmission speed (kbps) DIP switch 1 2 3 4 AUTO (default) OFF OFF OFF OFF 12,000 OFF OFF OFF ON
6000 OFF OFF ON OFF
3000 OFF OFF ON ON
1500 OFF ON OFF OFF
500 OFF ON OFF ON
187.5 OFF ON ON OFF
93.75 OFF ON ON ON
45.45 ON OFF OFF OFF
19.2 ON OFF OFF ON
9.6 ON OFF ON OFF
5 DIRECT FILTER
6 N.C.
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8 Cable configuration
If the repeater is operated in DIRECT mode (DIP 5 = "ON"), the following cable configuration does not have to be taken into consideration. If the repeater is operating in FILTER mode as recommended, the bit delay of 11 bits must be taken into consideration in the cable configuration of the control system.
8.1 Configuration rules
Data transmission cables and network components lead to signal delays. The following section provides support when calculating the necessary network parameters. The configuration of network parameters is described using a practical example with STEP 7 ® software. The following data is required for configuration: – Total number of repeaters – Total length of all copper cables Tslot_Init = a + b x L + 22 x N Configuring the network parameters in STEP 7
- Open the "Properties-DP" dialog box and click on "Properties".
- Select the subnetwork to be configured and click on "Properties".
- Switch to the "Network Settings" tab and click on "Options".
- Switch to the "Cables" tab.
- In the "Cables" tab, activate the "Take into account the following cable configuration" checkbox.
- Enter the total number of repeaters used and the total length of all copper cables. If there are any fiber optic paths, they must be considered separately.
- Close all dialog boxes with "OK". Where Tslot_Init = Minimum slot time in bit periods a, b = Length parameter (see table) L = Network expansion in km N = Number of repeaters Transmission speed [kbps] a b DP DP/FMS 12,000 811 811 120 6000 461 461 60 3000 261 261 30 1500 161 991 15 500 111 371 5 187.5 71 371 1.875 93.75 71 211 0.9375 45.45 411 411 0.4545 19.2 71 76 0.192 9.6 71 71 0.096
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- Switch to the "Network Settings" tab and activate the "User-Defined" profile.
- Click on "Bus Parameters".
- Enter the calculated value in the "Tslot_Init" input field and click on "Recalculate".
- Change the "Gap Factor" to "1" and increase the "Retry limit" parameter to "3".
- Confirm all dialog boxes with "OK" and load the parameterization to your control system.
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9 Connection notes
- Install the device on a 35 mm DIN rail according to D I NE N6 0 7 1 5 . To avoid contact resistance only use clean, corrosion- free DIN rails.
- End clamps can be mounted on both sides of the device to stop the devices from slipping on the DIN rail (for ordering data see page 2).
9.1 Combined assembly with a system power
supply unit (modular star coupler)
- Connect together the required number of DIN rail connectors for the connection station. Two DIN rail connectors are required for each device (see A in Figure 5). A maximum of ten devices are permitted in a connection station.
- Push the connected DIN rail connectors onto the DIN rail (B and C).
- Place the device onto the DIN rail from above. The upper holding keyway of the device must be hooked onto the top edge of the DIN rail (see Figure 6). Make sure that it is aligned correctly with the DIN rail connectors.
- Once the device has been snapped on properly, check that it is fixed securely on the DIN rail. Figure 5 Combined assembly WARNING: Only mount and remove devices when the power supply is disconnected. WARNING: The PSI-REP-PROFIBUS/12MB module is designed for SELV operation according to IEC 60950/EN 60950/VDE 0805. The module may only be connected to devices, which meet the requirements of EN 60950. WARNING: Connect the DIN rail to protective earth ground using a grounding terminal block. The devices are grounded when they are snapped onto the DIN rail (installation according to PELV). This ensures that the shielding is effective. Connect protective earth ground with low impedance. A BC 101973A003
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9.2 Assembly as an individual device in the control
cabinet (stand-alone)
- Place the device onto the DIN rail from above. The upper holding keyway of the device must be hooked onto the top edge of the DIN rail (see Figure 6).
- Push the device from the front towards the mounting surface.
- Once the device has been snapped on properly, check that it is fixed securely on the DIN rail. Figure 6 Assembly in the control cabinet
9.3 Assembly in potentially explosive areas
– Areas with a danger of gas explosions Only devices that are installed in zone 2 may be connected to the data interfaces (port A and B). – Areas with a danger of dust explosions If dust is present, install the device in suitable, approved housing.
9.4 Removal
- Pull the locking latch down using a screwdriver, needle- nose pliers or similar.
- Pull the bottom edge of the module away from the mounting surface.
- Pull the module diagonally upwards away from the DIN rail.
- If removing a complete star distributor, remove the DIN rail connectors from the DIN rail as well. 102964B005 WARNING: Observe the safety notes on page 6.
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10 Cabling notes
10.1 Connecting the supply voltage
Operation as an individual device Supply the supply voltage to the module via terminal blocks 1 (24 V) and 2 (0 V). Figure 7 Individual/redundant supply Operation in a star coupler topology When the devices are operated in a star coupler topology, the supply voltage must only be supplied to the first device in the station. The remaining devices are supplied via the DIN rail connector. A redundant supply concept can be created by connecting a second power supply unit to another device in the topology. Using the MINI POWER system power supply unit As an alternative, the star coupler topology can also be supplied using the MINI-SYS-PS 100-240AC/24DC/1.5 (Order No. 2866983) or MINI-PS-100-240AC/24DC/1.5/EX (Order No. 2866653) system power supply unit. It is connected via two DIN rail connectors. Usually the system power supply unit is mounted as the first device in a topology. A second power supply unit can be used to create a redundant supply concept.
10.2 Connecting the data cables
Figure 8 D-SUB connections for port A and port B
- Use a suitable connector (e.g., SUBCON-PLUS- PROFIB..., see page 2) to connect the bus cable to the D-SUB connection on the repeater.
- If the repeater is located at the start or end of an electrical PROFIBUS segment, activate termination in the connector. WARNING: The device is operated with a +24 V DC SELV.
24 V 0 V
NOTE: Use shielded twisted pair data cables. Connect the cable shielding at both ends of the transmission path. Pin Signal Meaning
3 RxD/TxD-P Receive/transmit data, positive
5 DGND Data transmission
potential/(reference potential to VP)
6 VP Supply voltage, positive (P5V)
(50 mA, maximum)
8 RxD/TxD-N Receive/transmit data, negative
Ord.-No. 27 08863 PORT B Port A Port B
102986_en_03 15PHOENIX CONTACT GmbH & Co. KG • 32823 Blomberg • Germany • Phone: +49 - 52 35 - 30 0 PHOENIX CONTACT • P.O.Box 4100 • Harrisburg • PA 17111-0100 • USA • Phone: +717-944-1300 www.phoenixcontact.com
10.3 Wiring the switch contact
PSI-REP-PROFIBUS/12MB repeaters are equipped with a floating switch contact for error diagnostics (connection terminal blocks 3 and 4 in Figure 3 on page 8). This contact opens on the relevant device in the event of a transmission error at port A or port B. The switch contact is an N/C contact and can be connected to a local digital input, e.g., on the PLC, to support error detection. When using a device topology (modular star coupler), the individual contacts can be connected to separate input points or the individual contacts can be looped to generate a group message (Figure 9). Figure 9 Individual and group message NOTE: The maximum load capacity of the relay contact is 60 V DC/42 V AC, 1 A. 101973A006