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Circuitry for Limit Switch Function or Emergency Stop Function
Special features:
- Everything integrated
- No additional wiring effort
- No additional switching elements
Technical data:
- Designation
- End
- Supply voltage
- 230 V~, 400 V~
- Max. switching current
- 100 mA ( undervoltage trigger)
- Function
- Triggering of the undervoltage coil by limit switch
- Connection
- Via motor lead or additional control lead
Use in Series :
- All series with undervoltage trigger
- K400, K400D, K570, K590, K700, K900, K2000 1Ph, K2000 3Ph, K3000 1Ph, K3000 3Ph, K3500, K4000, Custom housing
Circuitry examples:
Example 1 [pdf-File]
Example 2 [pdf-File]
Please note:
To conform with EN60204-1, machines with a rated power of less than 3kW and a maximum of two external control devices (e.g. limit switches, Emergency Stop devices, etc.) are allowed to be operated without a control transformer. With three control devices and more there has to be a control transformer with overcurrent protection (see circuit diagram K3000 with isolating transformer).
Release-free mechanism:
All switches with limit switch function and Emergency Stop function are of release-free design. This means that switching on is impossible when the control device has responded.
Functional description:
All control devices are connected to the supply line of the undervoltage trigger. When a control device (limit switch, Emergency Stop controller) is actuated, the undervoltage trigger responds and the machine is stopped immediately. Switching on is impossible when a control device is actuated.