Piping Diagram
Samsung Electronics 259
Maximum current limit (each compressor)
▪ Purpose
Prevent device damage due to excess current in circuit components or overheating of the IPM module.
▪ Concept
- The compressor operation frequency is controlled to prevent each INV PBA input current (CT) from exceeding the designed current limit.
- The compressor operation temperature is controlled to prevent each INV PBA output current (OCT) from exceeding the designed current limit.
▪ Control specifications in detail
3RD step Comp trip: Compressors stop and an error is triggered (E462).
CT(A)
Hz hold
Ampere
HP Down
Ampere
Comp Trip
Ampere
Compressor Trip (E462)
Normal operation
3RD step Comp trip: Compressors stop and an error is triggered (E462).
OCT(A)
Hz Down
Ampere
HP Down
Ampere
If an error is sent from
the INV controller
Compressor Trip (E464, 465, 364, 365)
Normal operation
7-3 Functions (cont.)
7-3-2-5 Protective control (cont.)
7-3-2 Control (cont.)
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