Mitsubishi Electric Evolution+ s-MEXT Technical Manual page 172

FAN SPEED
FAN SPEED
FAN SPEED
FAN SPEED
FAN SPEED
REQUEST
REQUEST
REQUEST
Figure 12-6: representation of Mr. Slim management, reduction load safety function.
Version 38
SAFETY REDUCTION LOAD – LP
FAN MANAGEMENT
The logic will speed up the fan and wait a timer before going
WAIT
The logic will speed up to maximum speed the fan and wait a
WAIT
MAX
SRL
PAC-IF REQUEST
MANAGEMENT
MAX
Figure 12-5: representation of fan management, reduction load safety function.
PAC-IF REQUEST MANAGEMENT
REQUEST
WAIT
WAIT
WAIT
...
REQUEST
FUNCTION ACTIVATION
Protection not active.
Ventilation Speed: Req. REGULATION
Protection activated for C1 or C2.
The logic check the FAN SPEED status:
A- FAN SPEED < MAX SPEED → Go to (3) Step1
B- FAN SPEED = MAX SPEED → Go to (5) Finish
IF the protection is still activated.
to (4) Step2
If the protection is still activated.
timer before going to (5) Finish
If the protection is still activated.
Go to PAC-IF Request Management for SRL LP
PROTECTION CHECK
Protection not active.
PAC-IF : Req. REGULATION
Protection still active.
Fan Protection DONE.
The logic will keep the PAC-IF request to the last value sent
and wait a timer before going to (3) Protection Step1
If the protection is still activated.
The logic will decrese the request and wait a timer before
going to (4) Protection Step2
If the protection is still activated.
The logic will decrese the request and wait a timer before
going to (5)
...
LAST STEP OF PROTECTION
If the protection is still activated.
The logic will decrese the request
END OF SRL
FUNCTION RESTORE
Protection not active.
Ventilation Speed: Req. REGULATION
IF the protection is still not active
The logic will slow down the fan to the original regulation
speed before going to (1) Normal Fan
IF the protection is still not active
The logic will slow down the fan and wait a timer before
going to (2) Check
If the protection is still not active
The logic will wait a timer before going to (3) Step1
If the protection is still not active and the PAC-IF is in Normal
Zone
Go to (4) Step2
PROTECTION RESTORE
Protection still not active.
PAC-IF: Req. REGULATION
Protection still not active.
The logic will restore the original request sent to the PAC-IF
and wait a timer before going to (1) Normal Zone
If the protection is still not active.
The logic will increse the request and wait a timer before
going to (2) Alert Zone
If the protection is still not active.
The logic will increse the request and wait a timer before
going to (3) Protection Step 1
...
LAST STEP OF PROTECTION
If the protection is not active.
Go to (5)
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