Patent ID: 11909398
Assignee: EPPENDORF SE
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B  G | IPC B  G  H

Claim 10:
11. The method according to claim 9, wherein the monitoring device is connected via a third contact on the equipment side to the second electrical switch and via a fourth contact on the mains side to an electrical potential other than the second electrical potential,
wherein the monitoring device determines a switched-on state of the second electrical switch when an electrical operating voltage is present between the third contact and the fourth contact and signals this state to the sequence controller,
wherein the sequence controller,
when the second electrical switch is expected to be switched off, but it is signaled by the monitoring device that the first electrical switch is switched on, or
when the second electrical switch is expected to be switched on, but it is signaled by the monitoring device that the first electrical switch is switched off,

blocks operation of the laboratory equipment.