Contactor having electronic coil control
The disclosure relates to a contactor having electronic coil control for a magnet coil, the operation of keeping the pull-in power of the magnet coil constant being formed by current clocking, and having a safety-related output assembly of a programmable logic controller for the fault diagnosis of the contactor, the safety-related output assembly determining the flow of current flowing into the contactor and detecting a fault if a limit value is undershot and switching off. In the contactor disclosed herein, a connectable base load is integrated in the contactor.
1. A contactor comprising:
an electronic coil control for a magnet coil, wherein the electronic coil control is configured to keep a pull-in power of the magnet coil constant by current clocking;
a safety-related output assembly of a programmable logic controller for fault diagnosis of the contactor, wherein the safety-related output assembly is configured to determine a flow of current into the contactor, detect a fault when a limit value is undershot, and switch off; and
a connectable base load integrated in the contactor.
2. The contactor of claim 1 , wherein the connectable base load is connected in a start-up phase of the contactor when current is not flowing through the magnet coil.
3. The contactor of claim 2 , wherein the connectable base load is connected in pause times of the current clocking for the magnet coil.
4. The contactor of claim 3 , further comprising:
a switch connected in series with the connectable base load.
5. The contactor of claim 4 , wherein a signal specifying a clock for the electronic coil control is impressed on the switch in an inverted manner.
6. The contactor of claim 5 , further comprising:
a time control integrated in the contactor.
7. The contactor of claim 6 , wherein an active phase of the time control is restricted to a pull-in process of the contactor.
8. The contactor of claim 1 , wherein the connectable base load is connected in pause times of the current clocking for the magnet coil.
9. The contactor of claim 8 , further comprising:
a switch connected in series with the connectable base load.
10. The contactor of claim 9 , wherein a signal specifying a clock for the electronic coil control is impressed on the switch in an inverted manner.
11. The contactor of claim 10 , further comprising:
a time control integrated in the contactor.
12. The contactor of claim 11 , wherein an active phase of the time control is restricted to a pull-in process of the contactor.
13. The contactor of claim 1 , further comprising:
a switch connected in series with the connectable base load.
14. The contactor of claim 13 , wherein a signal specifying a clock for the electronic coil control is impressed on the switch in an inverted manner.
15. The contactor of claim 14 , further comprising:
a time control integrated in the contactor.
16. The contactor of claim 15 , wherein an active phase of the time control is restricted to a pull-in process of the contactor.
17. The contactor of claim 1 , further comprising:
a time control integrated in the contactor.
18. The contactor of claim 17 , wherein an active phase of the time control is restricted to a pull-in process of the contactor.