Mitsubishi Electric e Series Service Handbook page 99

[ VII Control ]
(5) Setting the water temperature using analog signal input
When dip switch SW2-7 is set to ON (Enable external input), SW2-8 is set to OFF, and SW3-4 is set to OFF,
the target water temperature varies with the preset temperatures A and B and the type of analog input
signal.
Set the dip switches on the circuit board as follows to make the settings for the items described in this section.
Press the push switch SWP3 to enable the configuration changes.
Press the push switches SWP1 (↑) or SWP2 (↓) to increase or decrease the value.
When the desired value is displayed, press SWP3 to save the setting value.
Settings table
Dip switch setting (SW1)
No.
■:ON □:OFF
1 0 1 0 1 1 1
2 1 1 0 1 1 1
3 1 0 0 0 0 0
4 0 1 0 0 0 0
*1 Applicable only when Dip SW3-6 is set to ON (Brine setting)
* Due to the resistance of the wire that is connected to the analog input, the preset temperature may not properly be sent. If this
is the case, check the current value of the analog input, and adjust the output value of the connected signal output device.
Refer to the table below for how to display the value of the analog input.
Dip switch setting (SW1)
No.
■:ON □:OFF
1 0 1 0 0 0 0
2 1 1 0 0 0 0
3 0 0 1 0 0 0
• When the water temperature setting input signal type is 4-20 mA
• External analog input signal of 6 mA: Preset temp. A
• External analog input signal of 18 mA: Preset temp. B
• External analog input signal of between 6 and 18 mA: the preset temperature will be linearly interpolated.
Preset temp B
Preset temp A
• When the water temperature setting input signal type is 0-10 V
• External analog input signal of 1 V: Preset temp. A
• External analog input signal of 9 V: Preset temp. B
• External analog input signal of between 1 and 9 V: the preset temperature will be linearly interpolated.
Preset temp B
Preset temp A
HWE1417B
Setting Item
0 1 0 1 Preset temp. A (Cooling)
0 1 0 1 Preset temp. B (Cooling)
1 1 0 1 Preset temp. A (Heating)
1 1 0 1 Preset temp. B (Heating)
Monitorable items
1 0 0 0 Current value (4-20 mA)
1 0 0 0 SV voltage value (1-5 V)
1 0 0 0 10V voltage value (0-10 V or 2-10 V)
4 mA 6 mA 18 mA
0 V 1 V 9 V
Initial value Unit
Increments
5 ºC
25 ºC
30 ºC
55 ºC
Unit
mA
V
V
20 mA Input current
10 V Input voltage
- 90 -
Setting
Lower limit Upper limit
1ºC 5 (-10) *1 25
1ºC 5 (-10) *1 25
1ºC 30 55
1ºC 30 55
Setting change from
an optional remote
controller
(PAR-W21MAA or
PAR-W31MAA)
Not possible
Not possible
Not possible
Not possible
GB