49
冷凍機保護
- Freezer protection
In the project the function makes the unusual condition distinction which fixedly protects for the
freezer
1. Movement principle: When has not satisfied the standard, TROUBLE condition occurrence.
2. Setup project : Divides into “arranges the collection”, “the unusual condition time”, “the movement
compartment” and so on three items;
2-1
動作隙間
- Movement compartment: Refers to temperature difference scope which the REF.2
movement temperature may allow.
2-2
異常檢出時間
- The unusual condition time: T1 is a freezer. 1 guard time, T2 is a freezer. 2
guard times.
3. Unusual condition movement principle
3-1.[T1]: When the revolution starts, from “freezer. after 1 outputs ON”, namely starts to
accumulate the time.
3-1-1. In establishes in the time, if freezer temperature's PV enters “the movement
compartment” in scope, namely stop accumulation time.
3-1-2. In establishes in the time, if the freezer temperature's PV value has not entered “the
movement compartment” in scope, namely TROUBLE occurrence.
3-1-3 When establishes 0 min, the TROUBLE function is invalid.
3-2.[T2]: In the revolution, freezer temperature's PV surpasses “the movement compartment”
when scope, namely starts to accumulate the time.
3-2-1. In establishes in the time, if freezer temperature's PV enters “the movement
compartment” again when scope, namely stop accumulation time.
3-2-2. In establishes in the time, if freezer temperature's PV has not entered “the movement
compartment” again in scope, namely TROUBLE occurrence.
3-2-3. When establishes 0 min, the TROUBLE function is invalid.
3-3. Defrosts execution period, stops this protection function temporarily, does not carry on the
unusual condition movement.