Siemens EK 726 Series Wartungshandbuch PDF herunterladen (Seite 81)

COMMUNICATIONS / INTERFACES

MICROMASTER

MICROMASTER Vector

MIDIMASTER Vector

SIEMENS DA 64 – 2001/2002

4/5 Version C4

The power supply specifications are as follows:

Voltage tolerance 6V ± 0.5V

Current drain for operation with a drive inverter: 50mA,

Current drain for operation without drive inverter: 250mA

Connector:

- outer diameter: 3.5 mm (=0V)

- inner diameter: 1.35 mm (=+6V

Designation Order No.

Multi-lingual plain-text operator

panel OPM2 with integrated

interface converter RS232/RS485

6SE3290-0XX87-8BF0

CABLE SET TO MOUNT THE

OPM 2 IN THE CABINET,

3M LONG

6SE3290-0XX87-8PK0

PC INTERFACE CABLE RS232

FOR OPM 2,

1M LONG

6SE3290-0XX87-8SK0

Table 3: Ordering data for the OPM2 plain text operator

panel

4.6 PROFIBUS module CB15

Using this option, MICROMASTER, MICROMASTER Vector

or MIDIMASTER Vector can be controlled via a serial

PROFIBUS-DP bus (SINEC L2-DP).

PROFIBUS-DP is a serial high-speed communications system

which has been optimized for the actuator/sensor range,

where extremely short response times are important. It

operates as a decentralized I/O system. It replaces

conventional wiring to the sensors and actuators using a

serial RS485 bus system which connects the various stations

(nodes) with one another.

The suitability of this system for these types of applications

has been recently improved by increasing the bus transfer

rate up to 12Mbd. The protocol is defined in DIN19245 as well

as EN50170 which guarantees communications between the

PROFIBUS-DP stations, independent of the manufacturer.

Using this bus system, up to 125 stations can be networked

with one another. An extremely flexibly data structure allows

the system to be optimized so that it precisely corresponds to

the requirements of each device.

PROFIBUS-DP is the core of the new generation of SIMATIC

S7 automation systems from Siemens. All technical, display

and PLC operator functions can be integrated using this bus

system. In order to configure a SIMATIC-based automation

system, it is only necessary to run the appropriate STEP7

configuration tool on a PC. The bus is configured using drag

and drop in a PROFIBUS-DP network which is displayed

graphically.

The advantages of the automation of a system using

PROFIBUS-DP are listed in the following:

· Only one single network for operator panels, drives,

sensors, actuators, PLCs.

· Cost saving when it comes to the installation time and

wiring.

· Simple commissioning using the SIMATIC S7 PLC system

and the STEP7 software.

· High degree of flexibility so that the automation system

can be subsequently modified.

· Can be easily integrated into more complex process

display systems, for example, PCS7.

· Remote diagnostics reduce the downtime when faults

develop.

Features of the CB15 PROFIBUS option:

· Permits fast cyclic communications via a PROFIBUS link.

· Supports all PROFIBUS baud rates up to 12Mbd.

· Up to 125 drive inverters can be controlled using the

PROFIBUS-DP protocol (with bus amplifier).

· Compliance with EN50170 guarantees open

communications on the serial bus system. It can be used

together with other PROFIBUS-DP/SINEC L2-DP

peripheral devices connected to the serial bus. The data

format corresponds to the VDI/VDE Directive 3689

“PROFIBUS profile for variable-speed drives”.

· Non-cyclic communications channel to connect DRIVE-

MONITOR or other service tools.

· Supports PROFIBUS control commands SYNC and

FREEZE.

· Can be easily configured using the "S7 Manager" software

or any other original PROFIBUS commissioning tool.

· Can be easily integrated into a SIMATIC S5 or S7 PLC

system using specifically developed function blocks (S5)

or software modules (S7).

· It can be just as easily plugged into the operator panel as

the plain text operator panel.

· No special power supply is required.

· Digital and analog inputs can be read via the serial bus

and digital as well as analog outputs can be controlled via

the serial bus.

· Response time when processing the data: 5 ms

The output frequency (and therefore the motor speed) can be

locally controlled at the drive or via the serial bus.

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