Category: Hitachi

560CVD11 Multimeter with FCD, 4U/4I

Can be set to automatically change the screen of the measurement page every 6 seconds and to display each screen once.

CT/VT interface with 3 voltage and 3 current inputs for direct monitoring of 3-wire 85…. .400 VAC

1 A/5 A input for AC transformers

RTU500 serial interface (RS-485)

Display on the front

Applications

The multimeter 560CVD11 is used to measure analog AC input signals www.ge-drive.com from three independent phases with additional inputs for neutral current and voltage.

The module measures the voltage and current per phase directly and generates a series of calculated values.

In addition, the module can detect fault currents and the direction of overcurrent. The modules support configurations with 3 or 4 voltage transformers.

Several versions are available:

Features

The multimeter is a microprocessor-based intelligent electronic device (IED) for measuring current, voltage, power and energy.

Fault current detection and overcurrent indication are also provided.

The current and voltage inputs are connected via transformers only (see Wiring). The modules support configurations with 3 or 4 voltage transformers and 3 or 4 current transformers.

The calculated values are scaled according to the constants programmed by the user for the current and voltage transformers. All values are updated after 200 ms.

Fault current can be measured up to 20 times the rated current.

The current input can withstand 50 times the rated current for 1 second.

The multimeter is equipped with two binary outputs, which are not supported in the RTU500 series configuration.

Energy Values

The combined total value (mid and end readings) is calculated as follows

– Negative Energy

– Positive energy

– Reactive capacitive energy

– Reactive inductive energy

Voltage/Current Distortion (THD)

The 560CVD11 measures the total harmonic distortion (THD) in the voltage and current waveforms of each phase, expressed as a percentage deviation from a pure 50Hz or 60Hz sine wave.

THD is calculated using the Fast Fourier Transform (FFT) algorithm.

– u1. u2. u3. un

– i1. i2. i3. in

Fault current detection

The device has three phases and a neutral for overcurrent detection. The programming of the time-current characteristics is the same for all applications, the

All require the establishment of control variables: trip time delay curve, curve multiplier, pickup current, and reset timing.

Curve references follow ANSI, IEEE and IEC standards (ANSI C37.90. IEEE C37.112-1996. IEC 255-4. BF412).

Directional overcurrent

Detection

Directional overcurrent detection is used to protect multi-source feeders to distinguish between

Directional overcurrent detection is used to protect multi-source feeders to distinguish between faults in different directions. The device has three-phase and neutral overcurrent detection.

It ensures 90° quadrant coordination during phase directional polarization. Therefore, regardless of whether the system is in fault-free or faulted operation.

The selected polarization voltage should be reasonably constant regardless of whether the system is operating without or with faults.

Phase-directed overcurrent

Phase-directed detection requires the determination of whether the current flow in each phase is forward or reverse, depending on the connection of the phase sources, the selected MTA angle, and the voltage and current phases.

RTU560

Remote Terminal Unit

Connectivity and Setup

Modem 560FSM10

Operation

The 560FSM10 modem is a CCITT V.23 modem with snap-in DIN rail mounting.

The V.23 uses the frequency shift keying (FSK) method. The modem operates in both 2-wire and 4-wire connections.

The operating mode is set by a 12-fold DIP switch. Figure 1 shows the front view of the modem with the components described in the next chapter from top to bottom.

The power connector X1 consists of three terminals for www.ge-drive.com connection to the supply voltages shown in Table 1.

The PE pin must be connected to ground at the installation. The power indicator lights up when power is supplied.

The RJ45 connector X2 forms the RS232-D interface with the signals in Table 2. If the modem is connected to a communication device, the

If the modem is connected to a communication device, an adapter cable must be used to connect the pairs of lines in Table 2.

The RTS indicator lights up when the end device requests to send via the modem.

The DCD indicator lights when the 560FSM10 detects a carrier signal on the line interface. The CTS indicator lights when a carrier is being established.

CTS will be set at the same time. The 20-30ms transmit delay time must be adjusted in the CMU settings.

DIP switch S1 determines the operating mode of the modem. Switch C-1 is reserved for future use.

C-2 establishes a permanent carrier on the line, which is useful in a four-wire full-duplex connection. Table 3 summarises the above carrier modes.

Switch 2-W is used to distinguish between two-wire and four-wire operation of the modem, as shown in Table 4.

In two-wire mode, X3-1 and X3-2 form the terminal NF1 for transmit and receive.

In four-wire mode, X3-1 and X3-2 form transmitter terminal NF1 and X3-3 and X3-4 form receiver terminal NF2. as can be seen in Table 5.

The next three switches belong to the transmitter amplitude (see Table 6). In longer multi-distribution line configurations, the

the centre station modem requires a high amplification factor to receive the signal from the last modem.

In this case, the transmission level of the central station modem can be reduced by 20 dB using the -20 dB switch.

This is done to avoid overloading the receiver of the central station modem. To compensate for the low-pass characteristics of the transmission line

The amplitude of the upper transmission frequency can be increased by 20%, 40% and 60%. If both the 20% and 40% switches are “off”, the amplitude will not increase.

The 560FSM10 has five predefined receiver amplification levels: 0 dB, 10 dB, 20 dB, 30 dB, and 40 dB.

They are set by switches 10 dB to 40 dB (see Table 7).

DIP switches T-T and T-R are turned on when the 560FSM10 is terminated with line impedance.

This is usually the case at both ends of the line. If the modem is connected as a party line between the two ends of the

then these DIP switches must be “off” (see Table 8.) The T-T end connects to the low frequency (LF) line NF1. consisting of terminals X3-1 and X3-2.

T-R terminates to receiver pair NF2 in a four-wire configuration, consisting of terminals X3-3 and X3-4.

The low-frequency signal transformer of the 560FSM10 modem is designed to meet communication line isolation conditions up to 3 kV.

To achieve a higher level of safe electrical isolation between the modem and the communication line, an additional, separate low-frequency signal transformer is required (see Figure 2).

OVERVIEW

Basic Details: LYA010A Input/Output Module HITACHI

1 PLC Input/Output Modules

Introduction 1.1 Digital and Analogue Signals

Digital input/output signals are switching signals, a 1 or a 0.

Analogue signals, there are two kinds of voltage signals or current signals, generally signals transmitted by the transmitter, such as pressure transmitter to detect the pressure of the water pipe, will output a 4-20ma or 0-10V analogue signal to the PLC, the PLC for data processing.

Switching input point (DI), processing switching input signal.

Analogue input point (AI), processing analogue input signals (0-20 MADc, 0-5VDC).

Resistance signal (including RTD) input point, processing RTD or general resistance signal.

High-speed pulse input point, processing high-speed pulse signals.

Voltage (including thermocouple) input point, processing voltage input or thermocouple signals.

There are also communication functions for data exchange with the host computer or control subordinate controller instrument driver

1.2 Digital and analogue input modules

According to the different field input signals, the input module can be divided into switching input module and analogue input module.

The function of the switching input module is to convert various switching signals into TTL standard signals required by the CPU. Depending on the type of input power supply, they can also be DC input modules and AC input modules. The input signals are converted to TTL (5V) standard signals by photocoupling after voltage division, current limiting, and filtering.

The function of the analogue input module is to convert changing analogue signals such as temperature, flow, current, voltage, etc. into a number of digital signals which can be processed by the CPU. The analogue input circuit is generally composed of operational amplifier conversion, mode conversion (A/D), and optoelectronic isolation.

PLC input and output module types: digital input DI, digital output DO, analogue input AI, analogue output AO.

Digital inputs and outputs are generally 24V.

There are two types of analogue and four types of analogue. The two types are voltage type and current type. Voltage types are 0-10V and -10 to 10V. current types are mainly 4-20MA, 0-20MA. then the module converts the analogue to +32767~-32768 numbers through A/D conversion, and then implements the control.

The function of the signal template is to convert various process I/O signals. A variety of signal inputs are converted to digital quantities for easy recognition, processing and analysis by the PLC. Outputs are converted to analogue to a variety of regulatory mechanisms to perform, or the output is converted to a 2-bit do-it-yourself quantity to control a number of devices, such as start-stop, on and off

1.3 Digital Input/Output Module

The switching input module is a processing module that transfers external control www.ge-drive.com signals or field detection signals to the PLC CPU. External signals are generally buttons, proximity switches, travel switches, etc.

Output module is the PLC according to the input module input signals and internal logic programming logic for processing, processing results out of the switching output will be the output module of the high and low level signals, drive the external intermediate relays, contactors, indicators, solenoid valves and other components, so that the external equipment to carry out the corresponding action

1.4 Output module

The function of PLC output module is to amplify the power of the output signal.PLC signals are expressed in terms of level, in order to make them not distorted during being read, it needs to have a certain amount of reserve energy or a certain amount of signal power. The output module functions effectively as a power amplifier. The output module is the module that drives the external load.

Common PLC output devices, transistors, thyristors, relays.

PLC input modules are used to receive various parameters of the production process. (Start Stop)

PLC output module is used to send out the information obtained after the operation of the programmable controller and to complete the control of various industrial sites by realising the machine. (Execution results and output) 1. has good anti-interference ability.

2、It can meet the matching requirements of various signals in industrial site.

Serial Communications

Reliable products for analogue data transfer in SCADA applications

Reliable products for analogue data transmission in applications

560FSM11 – VFT Modem with Wide Bandwidth Range

(300-22000 Hz)

Applications

The DIN rail device 560FSM11 is a serial telegram modem that transmits data using the binary frequency keying (FSK) principle at a baud rate of 9600.

The 560FSM11 is functionally compatible with the 23WT24 modem (Rack Plug-In Module) and can be operated as a compatible counterpart.

The module’s Voice Frequency (VF) output can be switched to high impedance, so that up to 10 remote stations can be arranged on multiple plug-in lines.

Description

– VFT modem with wide bandwidth (300-22000 Hz)

– Point-to-point coverage up to 20 km and multipoint lines up to 10 km with 0.8 mm cable diameter

– Duplex operation via 4-wire connection, half-duplex operation via 2/4-wire connection

– Point-to-point, point-to-multipoint and multipoint topologies for up to 10 remote stations

– Baud rate of 9600 baud

– Configurable via DIP switches on the front of the unit

– Serial data signalling is completely transparent and requires no parameterisation

– Simple, space-saving DIN rail mounting

– Supply voltage: 24…. . 60 V DC ±20

– Functionally compatible with 23WT24 plug-in modules

Ethernet communication

Application example – mesh copper/optical fibre ring

Description

– Thanks to the ring structure and support for the Rapid Spanning Tree Protocol (RSTP), www.ge-drive.com communication is ensured at all sites even if part of the circuit is interrupted.

– In this arrangement, the secondary ring supports the communication of the primary ring even if part of the primary ring is interrupted.

– The 560NMS24/500NMD02 with two DSL interfaces must be used for sites with two copper lines.

– For sites with copper and fibre connections, the 560NMS24 and 560NUS12 must be used as optical/electrical media converters.

The 560NMD11 DIN rail is also available.

– For stations with two fibre optic connections, the 560NMS24 and 560NUS12 must be used as optical/electrical media converters.

– In addition, an Ethernet modem (Tetra, LTE, etc.) can be connected via the 560NMSxx/5x0NMDxx as (additional) alternative routing.

– With the 560NMS24. a line-through connection can be made automatically in the event of a station blackout. This means that other unaffected nodes/stations can still be accessed.

– Separate VLAN tunnels with bandwidth allocation and prioritisation (QoS) can be assigned to devices.

Another VPN tunnel can be assigned to the managed device for remote configuration and transmission of status information.

The VPN tunnel can be assigned to the managed switch. Alternatively, status information of the managed switch can be transferred to the control system via IEC 60870-5-104/-101.

– Possibility of serial device tunnelling.

Isolated line transformers for current isolation in transmission lines

Frequency range: 0.3 kHz to 3.4 kHz

Ratio 1:1

Insulation test voltage 10 kV

Optimised for line impedances of 600 Ω

Insulation resistance: 10000 MΩ at 500 V

Applications

The line transformer 500LTD01 is designed for FSK channels in the 50 Bd to 2400 Bd range.

It is used to isolate and protect the RTU500 series modems 23WT23. 23WT25 and 560FSM10 from remote control lines.

In addition, it can be connected to other data terminal equipment.

It is optimised for wire-first communication with a frequency range of 300 Hz to 3400 Hz and a line impedance of 600 ohms for the above modems.

All three types of modems allow high-resistance interleaving www.ge-drive.com on lines such as party lines and multisplit lines.

This is because the line transformer has no additional load on the line.

In configurations using full duplex communication channels, two line transformers are required, one for the transmit direction and the other for the receive direction.

Features

The line transformers can withstand isolation voltages of:

> 10 kV, 50 Hz, 10 sec.

Applications

The DIN-rail mountable 560NMD11 is a manageable plug-and-play Layer 2 switch.

It offers four auto-negotiating Fast Ethernet RJ45 ports with automatic MDI/X (automatic cross detection and correction),

A two-wire SDSL port for dedicated copper cables and an SFP (Small Form Factor Pluggable) module slot for fibre optic transceivers.

Ethernet can be distributed within the station via the switch’s four RJ45 ports.

The SDSL port can be used to connect copper stations with a maximum distance of 20 km (0.8 mm diameter).

Depending on the SFP modules fitted, the device can achieve spans www.ge-drive.com of up to 40 km over fibre-optic cables.

The switch provides a redundant topology via (fast) spanning tree protocol.

For documentation purposes, the Ethernet ports are labelled 1 to 4. The SDSL ports are connected via snap-in connectors.

There is no specific uplink port. All ports are functionally identical.

The link and speed status of each Ethernet port and SDSL port is indicated by the status indicators on the right (see ‘Connectors and Indicators’).

SFP-related indicators are located on the left.

The switch learns the Ethernet address by analysing incoming frames and stores it in a lookup table

(up to 2048 entries), which is used to forward the frame to the correct port only.

If a broadcast or multicast frame is received, or if the destination address is not found in the lookup table, the

then the received frame is forwarded to all ports other than the receiving port.

If an incoming frame with a specific source address does not refresh the entry in the lookup table, the entry is aged out for a certain period of time.

then it is aged out for up to 304 seconds (default, configurable).

With respect to IEEE 802.1Q VLAN frames, the switch can be configured in VLAN or transparent mode.

In transparent mode, the switch does not change any frames or frame TAGs;

In VLAN mode, the switch can be configured to support multiple applications, such as trunks or access ports.

The switch can support quality of service if it uses IEEE 802.1p-compliant frame formats.

The switch can divide frames into up to four queues, which can be configured as priority-based queues or weighted fair queues.

The 560NMD11 uses a wide-range power supply and operates from 24 to 60 V. The switch itself, the Ethernet ports, and the Ethernet ports can be connected to the switch.

The switch itself, the Ethernet ports, as well as the SDSL connections, RS-232 interfaces, and SFP transceivers are hot-swappable.

Connectors and Indicators

The 560NMD11 switch consists of four equal RJ45 Ethernet ports, an SDSL transceiver,

one SFP transceiver slot, and two RS-232 connectors for configuring and transferring serial data.

Each RJ45 port can be connected to a Cat. 3 (10 Mbps) or Cat. 5 (100 Mbps) Ethernet cable with a maximum length of 100 metres. The cables can only be used for internal connections.

Crossover cables are not required because the RJ45 ports of the 560NMD11 switch support automatic MDI/X.

The SDSL interface can be connected to a customer-provided two-wire copper cable. 0.8 diameter copper cable has a maximum connection distance of 20 km and a transmission rate of 192 kbps.

Depending on the distance, the transmission rate can be configured up to 11 Mbps.

The status of the Ethernet and DSL interfaces can be monitored by two LEDs.

For the Ethernet port, these are located on the lower and upper part of the RJ45 socket.

– Integrated Managed Layer 2 Switch

– 24… 60 VDC supply voltage

– 4x 10/100 BaseT (RJ45. auto-negotiation)

– 1x SHDSL port for copper lines

– Redundant topology via Spanning Tree Protocol (STP/RSTP/MSTP)

– 1x RS-232/ RS-485 interface for tunneling of serial protocols

Applications

The DIN-rail mountable 500NMD01 is a managed plug-and-play Layer 2 switch that offers

– 4 Fast Ethernet auto-negotiating RJ45 ports with automatic MDI/X (automatic cross detection and correction)

– 1 2-wire SHDSL port for dedicated copper cable

– 1 RS-232/ RS-485 interface for tunneling of serial protocols

The switch provides a redundant topology via Spanning Tree Protocol (STP/ RSTP/ MSTP). It supports VLAN framing and serial data tunnelling.

Ethernet can be distributed within the station via the switch’s four RJ45 ports.

The SHDSL port can be used for interstation interconnections up to a maximum distance of 25 km (0.8 mm diameter copper cable).

The SHDSL interface connects to any EDS500 SHDSL-compatible device, including the 560NMS24 and 560NMS34. as well as any EFM-based SHDSL device.

Features

For documentation purposes, the Ethernet ports are labelled 1 to 4 and there are no specific uplink ports.

All ports are functionally identical, and the SHDSL port is connected via a pluggable threaded connector.

The link and speed status of each Ethernet port and SHDSL port is indicated by status indicators (see ‘Connectors and Indicators’).

The switch learns the Ethernet address by analysing incoming frames and stores it in a lookup table (up to 2048 entries).

used to forward frames only to the correct port. If it is a broadcast or multicast, or if the destination address is not found in the lookup table, the

then the received frame is forwarded to all ports other than the receiving port. If an incoming frame with a specific source address does not refresh the entry in the lookup table, the

entry will age out in up to 304 seconds (by default, this value is configurable).

For IEEE 802.1Q VLAN frames, the switch can be configured in VLAN or transparent mode. www.ge-drive.com In transparent mode, the switch does not change any frames or frame TAGs;

In VLAN mode, the switch can be configured to support multiple applications, such as trunks or access ports.

The switch can support quality of service if it uses IEEE 802.1p-compliant frame formats.

The switch can divide frames into up to four queues, which can be configured as priority-based queues or weighted fair queues.

The 500NMD01 uses a wide-range power supply that operates from 24 to 60 V. The switch can be configured to operate on a wide-range power supply.

The switch itself, the Ethernet ports, as well as the SHDSL connection, the RS-232 interface, and the Extended Bus Interface (Ext) are hot-swappable.

Topology

The 500NMD01 offers a total of five ports for use with end devices, switches, bridges, hubs and routers.

The switches can be easily constructed in star, ring, or line topologies.

Redundant topologies can be automatically detected and processed via Rapid Spanning Tree Protocol (RSTP) or Multiple Spanning Tree Protocol (MSTP).

This is fully backward compatible with the widely used Spanning Tree Protocol (STP).

Management and Configuration

Management and configuration of the 500NMD01 can be accomplished via Telnet, Secure Shell (SSH), SNMP, RS-232. or Web interface.

All methods can be used to read or write device parameters.

In addition, the interface and alarm status of the device can be monitored via IEC 60870-5-101 or -104.

Existing configurations can be saved and restored. The configuration can also be stored in an external configuration stick (500NMA01).

This makes it simple to swap devices without trained personnel.

By default, the 500NMD01 switch is configured with an IP address of 10.0.0.2. a subnet mask of 255.0.0.0. and a gateway of 10.0.0.1.

Connections for configuration purposes can be accepted over any interface. All Ethernet ports are in the administrative state by default.

The RS-232 interface is preconfigured for a baud rate of 57600. 8 data bits, no parity, and 1 stop bit (57600.8N1).

Any terminal software (e.g. HyperTerminal) can access the command line interpreter configured through this interface.

– Integrated Managed Layer 2 Switch

– 24… 60 VDC supply voltage

– 4x 10/100 BaseT (RJ45. auto-negotiation)

– 2x SHDSL ports (for copper)

– Redundant topology via Spanning Tree Protocol (STP/ RSTP/ MSTP)

– 1x RS-232/ RS-485 and 1x RS-232 interfaces for tunneling of serial protocols

Applications

The DIN-rail mountable 500NMD02 is a managed plug-and-play Layer 2 switch offering

– 4 Fast Ethernet auto-negotiating RJ45 ports with automatic MDI/X (automatic cross detection and correction)

– Two 2-wire SHDSL ports for dedicated copper cabling

– 1 RS-232/ RS-485 interface and 1 RS-232 interface for serial protocol tunneling

The switch provides redundant topology via Spanning Tree Protocol (STP/ RSTP/ MSTP). It supports VLAN framing and serial data tunnelling.

Ethernet can be distributed within the station via the switch’s four RJ45 ports.

The SHDSL port can be used for interstation interconnections up to a maximum distance of 25 km (0.8 mm diameter copper cable).

The SHDSL interface connects to any EDS500 SHDSL-compatible device, including the 560NMS24 and 560NMS34. as well as any EFM-based SHDSL device.

Features

For documentation purposes, the Ethernet ports are labelled 1 to 4 and there are no specific uplink ports.

All ports are functionally identical, and the SHDSL port is connected via a pluggable threaded connector.

The link and speed status of each Ethernet port and SHDSL port is indicated by status indicators (see ‘Connectors and Indicators’).

The switch learns the Ethernet address by analysing incoming frames and stores it in a lookup table (up to 2048 entries).

used to forward frames only to the correct port. If it is a broadcast or multicast, or if the destination address is not found in the lookup table, the

then the received frame is forwarded to all ports other than the receiving port. If an incoming frame with a specific source address does not refresh the entry in the lookup table, the

entry with a specific source address is not refreshed, the entry will age out in a maximum of 304 seconds (by default, this value is configurable).

For IEEE 802.1Q VLAN frames, the switch can be configured in VLAN or transparent mode.

In transparent mode, the switch does not change any frames or frame TAGs; in VLAN mode, the switch can be configured to support multiple applications.

In VLAN mode, the switch can be configured to support multiple applications, such as trunking or access ports.

The switch can support quality of service if it uses IEEE 802.1p-compliant frame formats.

The switch can divide frames into up to four queues, which can be configured as priority-based or weighted fair queues.

The 500NMD02 uses a wide-range power supply and operates from 24 to 60 V. The 500NMD02 can be configured to operate on a wide-range power supply.

The components themselves, the Ethernet ports, the SHDSL www.ge-drive.com connections, the RS-232 interface, and the Extended Bus Interface (Ext) are all hot-swappable.

Topology

The 500NMD02 offers a total of six ports for use with end devices, switches, bridges, hubs and routers.

The switches can be easily built into star, ring, or line topologies.

Management and Configuration

Management and configuration of the 500NMD02 can be performed via Telnet, Secure Shell (SSH), SNMP, RS-232. or a network interface.

All methods can be used to read or write device parameters.

In addition, the interface and alarm status of the device can be monitored via IEC 60870-5-101 or -104.

Existing configurations can be saved and restored. The configuration can also be stored in an external configuration stick (500NMA01).

This makes it simple to swap devices without trained personnel.

By default, the 500NMD02 switch is configured with an IP address of 10.0.0.2. a subnet mask of 255.0.0.0. and a gateway of 10.0.0.1.

Connections for configuration purposes can be accepted through any interface. All Ethernet ports are in the default state.

The RS-232 interface is preconfigured with baud rate 57600. 8 data bits, no parity, 1 stop bit (57600.8N1), 8N1).

The command line interpreter configured via this interface can be accessed by any terminal software (e.g. HyperTerminal).

Rapid Spanning Tree Protocol (RSTP) or Multiple Spanning Tree Protocol (MSTP) automatically detects and handles redundant topologies.

This is fully backward compatible with the widely used Spanning Tree Protocol (STP).

Applications

The 560NMD01 Top Hat DIN-Rail Appliance is a managed Layer 2 switch.

It provides four Fast Ethernet RJ45 ports with automatic MDI/X (Automatic Cross Detection and Correction) and a 2-wire SDSL interface.

The SDSL interface can be used to connect sites with distances of up to 20 km (copper cable, 0.8 mm diameter).

Thanks to the (fast) Spanning Tree Protocol, the switch enables a redundant topology.

For documentation purposes, Ethernet ports are labelled with numbers 1-4. There are no special uplink ports. All ports are functionally identical.

The SDSL ports are externally connected www.ge-drive.com via backplane or expansion connectors. The connection (link) and speed status of all Ethernet and SDSL ports is indicated by LEDs on the front panel.

The switch “learns” Ethernet addresses by analysing received frames.

The addresses learned in this way are stored in the address table (up to 2048 entries) and are used to forward the frames to the correct interface.

Frames are forwarded to all interfaces only if they are received with a wide or multicast address, or if the destination address is not found in the address table.

If an entry in the address table is not acknowledged by the corresponding received frame, it is deleted after a maximum of 304 seconds (default).

IEEE 802.1Q-compliant VLAN configuration is supported. Frames can be transparently forwarded or assigned to (access or trunk) VLANs.

The switch can support quality of service if IEEE 802.1p-compliant frame formats are used. The switch can divide outbound frames into up to four priority-controlled queues.

The device has a wide-range power supply, requiring a voltage between 24 and 60 V. The switch can be used with a wide range of power supplies.

The Ethernet interface, SDSL, RS232 (Con 0) and the expansion bus interface (Ext) can be plugged in during operation (hot-swap).

Connectors and indicators

The 560NMD01 device provides four equivalent Ethernet interfaces with RJ-45 connectors, an SDSL interface and an RS232 interface that are

for configuration and transfer of serial data. Each RJ-45 port can be connected via Cat.3 (10Mbps) or Cat.5 (100Mbps) network cable.

for internal communications up to 100 metres. Support for MDI/X means that crossover Ethernet cables are not required.

The SDSL interface can be connected via a two-wire copper cable. The maximum connection distance is 20 kilometres using a 0.8 mm diameter copper cable with a transmission rate of 192 kbps.

Depending on the distance, the transmission rate can be increased to a maximum of 11 Mbps.

The status of all interfaces can be monitored by two LEDs. For Ethernet interfaces, these are located on the lower and upper part of the RJ45 socket.