Maximum Compressor Speed As A Function Of The External Temperature - Mitsubishi Electric i-BX-N Technical Manual

TM_i-BX(-N)_NC05_00_06_20_EN
4.7

MAXIMUM COMPRESSOR SPEED AS A FUNCTION OF THE EXTERNAL TEMPERATURE

The maximum compressor speed can be set differently based on the external air temperature, within 2 limits that can be set using parameters 133X
"Ext.temperature high threshold:" and 133Y "Ext.temperature low threshold:", as follows:
- if External air T < 133Y, maximum speed = par. 133W "Max speed inverter custom 2:"
- if 133Y <External air T < 133X, maximum speed = par. 1368 "Max speed inverter:"
- if External air T> 133Y, maximum speed = par. 133V "Max speed inverter custom:"
Note: for parameter 133Y, the hysteresis is 0.5°C fixed right; for parameter 133X the hysteresis is 0.5°C fixed left.
See the following chart as an example.
70
60
50
rps= 133W
40
30
20
10
0
-20 -10
For the default values of the various parameters, see the parameters table
MEHITS S.p.A. ● TECHNICAL MANUAL
rps= 1368 rps= 1368
0 10
External air T
133Y
39
rps= 133V
20 30
133X
Version NC05 - Translation of the Original Instructions
Soglia Inferiore Lower threshold
Soglia Superiore
Upper threshold
40