The HS 724 heater control system in conjunction with the SIMATIC S7-300 is a powerful state-of-the-art automation system for all thermoforming machines and their complex production processes.

The distributed configuration with PROFIBUS DP makes the HS 724 particularly suitable for use in drying facilities and tunnel ovens.

The main components of the HS 724 heater control system are:

• ZA 724 central interface module
• LA 724 power output module

Highlights

• PROFIBUS DP interface, i.e. uncomplicated, flexible and low-cost communication at field level
• High-performance output modules with 650 W/channel (without fan), 1000 W/channel (with fan), and 1500 W/channel (with fan and 12 channels per module)
• The fuses – one fusible link per channel for protecting the power triac – can be replaced easily from the front
• Central power input via power rails accessible from the front
• Optimum expansion capability up to 2688 channels per system
• Comprehensive diagnostic functions such as wire-break, fuse tripping and neutral conductor interruption
• Integratable line voltage monitoring submodule
• Quick, reliable operation by operator panel with touch display.

Особенности

• The PROFIBUS DP interface means simple, flexible and low-cost communication in the field area
• Powerful output modules that can switch up to 36 kW per channel
• The different power modules LA 274i, LA 724iHP and LA 724iSSR can be combined as required within a structure
• Power is supplied centrally via busbars on the front
• The fuses - one safety fuse per channel to protect the power triac - can be replaced easily on the front
• Optimum expansion possibility to a maximum of 2688 channels (outputs) per system
• Extensive diagnostics functions such as wirebreak, radiator failure, fuse tripped and neutral conductor break
• If several radiators are connected in parallel to one channel (output), the failure of one of these radiators is detected
• Line-voltage sensing submodule that can be integrated
• Fast and safe operation using operator panels with touch display

Область применения

The HS 724 heater control system in conjunction with the SIMATIC S7-300 is a powerful state-of-the-art automation system for all thermoforming machines and their complex production processes.

The distributed configuration with PROFIBUS DP makes the HS 724 particularly suitable for use in drying facilities, tunnel ovens or other heating systems in plastics machinery.

Fast adjustment of the emitter setpoint values at the operator panel is assured by a user interface optimized to the requirements of thermoforming machines.

Standard SIMATIC S7-300 modules handle the PLC tasks in the automation system. Additional functions, such as temperature control, can be implemented in the system in conjunction with the CPU 614.

The output can be set by channel group or phase. It is also possible to switch between production mode and a reduced standby mode. This, and function control, take place during normal operation.

Should a fault occur, it can be rectified quickly using the detailed diagnostic functions.

Дизайн

The HS 724 heater control system is implemented as a distributed unit of a higher-level SIMATIC controller. With the PROFIBUS DP link and the OP37 operator panel, the result is a perfectly interacting automation system comprising:

Operator panels
All operator panels or industrial PCs with integrated MPI interface

SIMATIC S7-300/S7-400/WinAC
as higher-level controller with integrated PROFIBUS DP interface and I/O modules

HS 724 heater control system

• With central interface module ZA 724 with PROFIBUS DP slave and integrated microprocessor system for controlling the LA 724 power outputs
• 1 to 7 ZA 724 central interface modules on the PROFIBUS DP
• 1 to 16 LA 724 power outputs with 24 channels per ZA 724

Heat emitter array
with all commonly implemented types of emitter

Функции

An operator interface specially adapted to the requirements of thermoform machines ensures fast setting of the radiator setpoints on the operator panel.

Parameterization of the HS 724i is simplified through the use of off-the-shelf SIMATIC S7 function blocks.

SIMATIC S7 standard modules handle the PLC tasks in the automation system. In conjunction with the SIMATIC, additional functions such as temperature control can be implemented in the system.

The output power can be influenced by channel, group or phase. You can also switch between production mode and reduced standby mode. This is possible during operation, as is function control.

Faults can be corrected quickly with the help of the detailed diagnostics functions.

Дальнейшая информация

Please contact:

Electronics Manufacturing Services

SIEMENS AG
A&D SE EWF EMS3
Würzburger Straße 121
90766 Fürth
Federal Republic of Germany

Bernhard Schmidt
Tel.: +49 (0) 911 - 750 - 20 23
Fax: +49 (0) 911 - 750 - 90 90
Cell phone: +49 (0) 172 - 8 46 01 11
E-mail: schmidt.bernhard@siemens.com

Automation Plastics Machines

SIEMENS AG
A&D MC PM1
P.O. Box 3180
91056 Erlangen
Federal Republic of Germany

Wolfgang Zapf
Tel.: +49 (0) 9131 - 98 - 20 65
Fax: +49 (0) 9131 - 98 - 21 21
E-mail: wolfgang.zapf@siemens.com