Circuitry for Limit switch- or Emergency-stop function
Features
- Everything integrated
- No additional wiring effort
- No additional switching elements
Technical data
Designation | End |
| 230 V~, 400 V~ |
| 100 mA (undervoltage release) |
Function |
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|
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Usable in series
All series with undervoltage release |
K400, K400D, K570, K590, K700, K900, K2000/single-phase, K2000/three-phase, K3000/single-phase, K3000/three-phase, K3500, K4000, special housings |
Circuitry examples
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 release. When a control device (limit switch, Emergency Stop controller) is actuated, the undervoltage release responds and the machine is stopped immediately. Switching on is impossible when a control device is actuated.