Mitsubishi Electric CAHV-R450YA-HPB Service Manual page 102

[ VII Control ]
(9) Setting the capacity control ratio using analog signal input
• When dip switch SW5-7 is set to ON (Enable external input) and item code 1051 is set to "1", the capacity control
ratio varies with the type of analog input signal.
• When the water temperature setting input signal type is set to 0 (4-20 mA)
• External analog input signal of 4 mA: 0%
• External analog input signal of 20 mA: 100%
• External analog input signal of between 4 and 20 mA: the percent will be linearly interpolated.
Load ratio
100%
• When the water temperature setting input signal type is set to 1 (0-10 V)
• External analog input signal of 0 V: 0%
• External analog input signal of 10 V: 100%
• External analog input signal of between 0 and 10 V: the percent will be linearly interpolated.
Load ratio
100%
• When the water temperature setting input signal type is set to 2 (1-5 V)
• External analog input signal of 1 V: 0%
• External analog input signal of 5 V: 100%
• External analog input signal of between 1 and 5 V: the percent will be linearly interpolated.
Load ratio
100%
• When the water temperature setting input signal type is set to 3 (2-10 V)
• External analog input signal of 2 V: 0%
• External analog input signal of 10 V: 100%
• External analog input signal of between 2 and 10 V: the percent will be linearly interpolated.
Load ratio
100%
*%: When the compressor frequency drops below the lowest frequency, the compressor stops.
The frequency value that causes the compressor to stop varies depending on the outside temperature and water temperature.
HWE22020
*%
0%
4 mA 20 mA
*%
0%
0 V 10 V
*%
0%
1 V 5 V
*%
0%
2 V 10 V
Input current
Input voltage
Input voltage
Input voltage
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