The ZA 724 central interface module is the intelligent processor module of the HCS724I heater control.
- Connection option for max. 16 LA724I/LA724IHP/LA724ISSR power output modules per ZA724I central interface module
- Communication via PROFIBUS DP interface
- Module encapsulated in metal enclosure
- Two LEDs for normal operation (green) and fault (red)
- PROFIBUS DP interface (up to 12 Mbaud)
- Rotary switch for setting the PROFIBUS DP address
- RS 232 C serial port
- Parallel bus interface to the power output modules
- Expansion slot for NE724I line voltage sensing submodule (option)
Communications
PROFIBUS DP
- Import of the parameter settings from the higher-level controller
- Transfer of the diagnostic information to the higher-level controller
Parallel bus (internal)
- Control and monitoring of max. 384 power output channels
Performance features
- Calculation of heat emitter control variables of power output channels
- Setpoints adjustable from 0% to 100% in steps of 0.5%
- Uniform load distribution over all power output channels and over all the SIPLUS HCS724I heating controllers operated in the group
- Simple adaptation to the respective production process by selection of up to 4 operating modes
- Mixed operation of the various power output modules is possible
Diagnostics
- Evaluation of diagnostics information from connected power output modules
- Phase-sequence detection indicating whether phases L1, L2, and L3 are correctly connected
- Automatic detection of the line frequency
Line synchronization
In order to ensure synchronization of the power output modules with the connected power supply, the system is synchronized with phase L1. The respective switch-on times for phases L2 and L3 are subsequently calculated automatically.
