Mitsubishi Electric CAHV-P500YB-HPB Service Handbook page 89

[ VII Control ]
• When the water temperature setting input signal type is set to 3 (2-10 V)
• External analog input signal of 2.9 V: Preset temp. A (Item code 11)
• External analog input signal of 9.1 V: Preset temp. B (Item code 13)
• External analog input signal of between 2.9 and 9.1 V: the preset temperature will be linearly interpolated.
Preset temp B
Preset temp A
(9) Setting the capacity control ratio using analog signal input
Select the analog input format
Switch settings
Items that can be set
Select the analog input
format
Select "1"
• When dip switch SW2-7 is set to ON (Enable external input), 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 5.9 mA: 0%
• External analog input signal of 18.3 mA: 100%
• External analog input signal of between 5.9 and 18.3 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 1.0 V: 0%
• External analog input signal of 9.1 V: 100%
• External analog input signal of between 1.0 and 9.1 V: the percent will be linearly interpolated.
Load ratio
100%
HWE15070
2.9 V 9.1 V
S W 2
-10 5
OFF OFF
Item Initial
Unit
code value
1051 0
*%
0%
5.9 mA 18.3 mA
*%
0%
1.0 V 9.1 V
Preset temperature = (B - A) * (Input voltage - 2.9 V) / 6.2 V + A
Change of 59 mV or less is not recognized.
Input voltage
S W
6 7
OFF OFF
Setting
Incre- Lower Upper
ments limit limit
1 0
Preset temperature = 100% * (Input current - 5.9 mA) / 12.4 mA
Change of 0.12 mA or less is not recognized.
Input current
Preset temperature = 100% * (Input voltage - 1.0) / 8.1 V
Change of 59 mV or less is not recognized.
Input voltage
- 82 -
3
8 9
OFF ON
Setting change from
Note an optional remote
controller
3 Not possible
0: Water temperature input 4-20 mA
1: Capacity control input 4-20 mA
2: Water temperature input IT terminal
3: Capacity control input IT terminal
10
OFF
GB