Electronic trip unit, circuit interrupter including the same, and method of setting trip unit settings
An electronic trip unit having a number of trip unit settings includes: a first input member; a second input member; a multi-position selector configured to select one of plurality of positions corresponding to values of the trip unit settings; a plurality of indicators each corresponding to one of the plurality of trip unit settings; and a processor having a routine, wherein the routine of the processor is structured to, in response to actuation of the first input member, increment a ring counter value and selectively activate one of the indicators corresponding to the ring counter value; and wherein the routine of the processor is further structured to, in response to actuation of the second input member, set a value of the trip unit setting corresponding to the activated indicator based on the selected position of the multi-position selector.
1. An electronic trip unit having a plurality of trip unit settings, the electronic trip unit comprising:
a first input member;
a second input member;
a multi-position selector configured to select one of a plurality of positions corresponding to values of the trip unit settings;
a plurality of indicators each corresponding to one of the trip unit settings; and
a processor having a routine,
wherein the routine of the processor is structured to, in response to actuation of the first input member, increment a ring counter value and selectively activate one of the indicators corresponding to the ring counter value; and
wherein the routine of the processor is further structured to, in response to actuation of the second input member, set a value of the trip unit setting corresponding to the activated indicator based on the selected position of the multi-position selector.
2. The electronic trip unit of claim 1 , wherein one or more of the indicators each correspond to one of a number of causes of trip; and wherein the routine of the processor is further structured to, in response to a trip, selectively activate one of the indicators corresponding to the cause of trip.
3. The electronic trip unit of claim 2 , wherein at least one of the indicators corresponds to one of the trip unit settings and one of the causes of trip.
4. The electronic trip unit of claim 2 , wherein said number of causes of trip includes at least one of a short delay trip and a long delay trip.
5. The electronic trip unit of claim 1 , wherein the multi-position selector is a rotary dial switch.
6. The electronic trip unit of claim 1 , wherein at least one of the indicators is a light emitting diode.
7. The electronic trip unit of claim 1 , wherein each of the indicators is configured to activate in a first color or a different second color, wherein the routine of the processor is further structured to selectively activate one of the indicators corresponding to the ring counter value in the first color when the set value of the trip unit setting corresponding to the activated indicator does not match the value corresponding to the selected position of the multi-position selector; and wherein the routine of the processor is further structured to selectively activate one of the indicators corresponding to the ring counter value in the second color when the set value of the trip unit setting corresponding to the activated indicator matches the value corresponding to the selected position of the multi-position selector.
8. The electronic trip unit of claim 1 , wherein the trip unit settings include at least one of a full load ampere rating, a short delay pickup, and a short delay time.
9. A circuit interrupter configured to protect a power circuit, the circuit interrupter comprising:
separable contacts;
an operating mechanism configured to open and close said separable contacts;
an electronic trip unit cooperating with said operating mechanism to trip open said separable contacts and having a plurality of trip unit settings, the electronic trip unit comprising:
a first input member;
a second input member;
a multi-position selector configured to select one of a plurality of positions corresponding to values of the trip unit settings;
a plurality of indicators each corresponding to one of the trip unit settings; and
a processor having a routine,
wherein the routine of the processor is structured to, in response to actuation of the first input member, increment a ring counter value and selectively activate one of the indicators corresponding to the ring counter value; and
wherein the routine of the processor is further structured to, in response to actuation of the second input member, set a value of the trip unit setting corresponding to the activated indicator based on the selected position of the multi-position selector.
10. The circuit interrupter of claim 9 , wherein one or more of the indicators each correspond to one of a number of causes of trip; and wherein the routine of the processor is further structured to, in response to a trip, selectively activate the one of the indicators corresponding to the cause of trip.
11. The circuit interrupter of claim 10 , wherein at least one of the indicators corresponds to one of the trip unit settings and one of the causes of trip.
12. The circuit interrupter of claim 10 , wherein said number of causes of trip includes at least one of a short delay trip and a long delay trip.
13. The circuit interrupter of claim 9 , wherein the multi-position selector is a rotary dial switch.
14. The circuit interrupter of claim 9 , wherein at least one of the indicators is a light emitting diode.
15. The circuit interrupter of claim 9 , wherein each of the indicators is configured to activate in a first color or a different second color; wherein the routine of the processor is further structured to selectively activate one of the indicators corresponding to the ring counter value in the first color when the set value of the trip unit setting corresponding to the activated indicator does not match the value corresponding to the selected position of the multi-position selector; and wherein the routine of the processor is further structured to selectively activate one of the indicators corresponding to the ring counter value in the second color when the set value of the trip unit setting corresponding to the activated indicator matches the value corresponding to the selected position of the multi-position selector.
16. The circuit interrupter of claim 9 , wherein the trip unit settings include at least one of a full load ampere rating, a short delay pickup, and a short delay time.
17. A method of setting trip unit settings of an electronic trip unit having a first input member, a second member, a multi-position selector configured to select one of a plurality of positions corresponding to values of trip unit settings, and a plurality of indicators each corresponding to one of the trip unit settings, the method comprising:
in response to actuation of the first input member, incrementing a ring counter value and selectively activating one of the indicators corresponding to the ring counter value; and
in response to actuation of the second input member, setting a value of the trip unit setting corresponding to the activated indicator based on the selected position of the multi-position selector.
18. The method of claim 17 , wherein one or more of the indicators each correspond to one of a number of causes of trip; and wherein the method further comprises:
in response to a trip, activating one of the indicators corresponding to the cause of trip.
19. The method of claim 18 , wherein at least one of the indicators corresponds to one of the trip unit settings and one of the causes of trip.
20. The method of claim 18 , wherein said number of causes of trip includes at least one of a short delay trip and a long delay trip.
21. The method of claim 17 , wherein the multi-position selector is a rotary dial switch.
22. The method of claim 17 , wherein at least one of the indicators is a light emitting diode.
23. The method of claim 17 , wherein each of the indicators is configured to activate in a first color or a different second color, and wherein said selectively activating one of the indicators corresponding to the ring counter value further comprises:
selectively activating one of the indicators corresponding to the ring counter value in the first color when the set value of the trip unit setting corresponding to the activated indicator does not match the value corresponding to the selected position of the multi-position selector; and
selectively activating one of the indicators corresponding to the ring counter value in the second color when the set value of the trip unit setting corresponding to the activated indicator matches the value corresponding to the selected position of the multi-position selector.
24. The method of claim 17 , wherein the trip unit settings include at least one of a full load ampere rating, a short delay pickup, and a short delay time.