- Sensors
- Temperature monitor TW 50/60
- Temperature monitor TW 03 S – Type 8432
- Electronic temperature monitor – Type 8433
- PT100 thermo sensor – Type 8433
- Electronic thermostat – Type 8434
- PT100 thermosensor – Type 8434
- Electronic thermostat in cable form – Type 8434
- PT100 thermosensor 2-wire and 3-wire cable connection – Type 8434
- Non-contact magnetic switch – Type 8441
- Current sensor – Type 8442
- Non-contact overhead wire contact TLC 4 – Type 8474
- Precipitation sensor – Type 8921
- Precipitation sensor – Type 8921
- Potential monitoring/-protection
- Mobile adjustment and test device – Type 8204
- Potential monitoring devices
- Display unit – Type 8540
- Voltage Monitors
- Voltage Signal Relays
- Potential Protection Devices
- for floating grounds with voltage monitoring – Type 8900
- for floating grounds with voltage monitoring – Type 8900
- for floating grounds with current control – Type 8901
- with low voltage limiter, surge arrester current monitoring and remote clearing function – Type 8901
- with SIEMENS low voltage limiter and surge arrester – Type 8901
- for open earthing with current monitoring and remote clearing – Type 8901
- for floating grounds with current control and LED indicator – Type 8901
- Voltage fuse – Type 8961
- Voltage Limiting Device – Type 8962
- Over Voltage Protector Type PSNP – Type 8963
- R/C combination – Type 8970
- Earthing device – Type 8971
- Special relays
- Switching amplifier
- Temperature monitoring – Type 8435-PT100
- Evaluation unit – Type KAG2
- Evaluation unit – Type 8480
- Evaluation unit – Type KAV1
- Switching amplifier – Type 8582
- Switching amplifier – Type 8582DCW
- Isolating switching amplifier – Type 8583
- Switching amplifier – Type 8586
- Mobile Test Device for non-contact overhead contact line switch
- Cable Monitoring Devices
- Points Heating Systems
- Current Monitoring/-supply
- Cabinets
- Accessories
- Individual Solutions
Description
The switching module is the power section of the points heater controller of the latest generation.
Each switching module controls a heating rod and monitors its function.
The switching module communicates with the superordinated controller (part No. 640100) via a three-wire bus (RS485).
The switching module consists of a power section and a control section.
The power section switches the heating rod and monitors the current through the heating rod for being above or below the set values. The heating rod is switched off if impermissible values are found.
A semiconductor switch in combination with two power relays is used as the switching element.
The control section is based on a microprocessor.
This is responsible for communication with the superordinated controller and evaluation of the switching and error states.
If there there is a short circuit or a breakage, an error message is created and transmitted to the superordinated controller.
Between 1 and 99 switching modules can be operated at a superordinated controller, whereby addresses 90-99 are reserved for special functions reserved (e.g 230 V cabinet heating).
The current amount of current drawn is learned by the switching module with a new heating rod (initial commissioning or replacement). The warning and alarm limits are set from the value that has been taught in and then saved in non-volatile memory.
The connections for the auxiliary power supply and data bus are located in the base of the housing and contact is made via a plug system in the top hat rail during installation.
The high-voltage connections are located in the upper part of the housing and are in the form of plug-in screw terminals.
The required safety clearances and distances are maintained as a result of this design.
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