Mitsubishi Electric CAHV-P500YB-HPB Service Handbook page 88

[ VII Control ]
(8) Setting the water temperature using analog signal input
Select the analog input format
Switch settings
Items that can be set
Select the analog input
format
Select "0"
• When dip switch SW2-7 is set to ON (Enable external input), the target water temperature varies with the preset
temperatures A and B and 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: Preset temp. A (Item code 11)
• External analog input signal of 18.3 mA: Preset temp. B (Item code 13)
• External analog input signal of between 5.9 and 18.3 mA: the preset temperature will be linearly interpolated.
Preset temp B
Preset temp A
• When the water temperature setting input signal type is set to 1 (0-10 V)
• External analog input signal of 1.0 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 1.0 and 9.1 V: the preset temperature will be linearly interpolated.
Preset temp B
Preset temp A
• When the water temperature setting input signal type is set to 2 (1-5 V)
• External analog input signal of 1.5 V: Preset temp. A (Item code 11)
• External analog input signal of 4.5 V: Preset temp. B (Item code 13)
• External analog input signal of between 1.5 and 4.5 V: the preset temperature will be linearly interpolated.
Preset temp B
Preset temp A
HWE15070
S W 2
-10 5
OFF OFF
Item Initial
Unit
Incre-
code value
ments
1051 0
5.9 mA 18.3 mA Input current
1.0 V 9.1 V Input voltage
1.5 V 4.5 V Input voltage
- 81 -
S W 3
6 7
OFF OFF OFF
Setting
Lower Upper
limit limit
1 0 3
Preset temperature = (B - A) * (Input current - 5.9 mA) / 12.4 mA + A
Change of 0.12 mA or less is not recognized.
Preset temperature = (B - A) * (Input voltage - 1.0 V) / 8.1 V + A
Change of 59 mV or less is not recognized.
Preset temperature = (B - A) * (Input voltage - 1.5 V) / 3.0 V + A
Change of 29 mV or less is not recognized.
8 9 10
ON OFF
Setting change from
Note an optional remote
controller
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
GB