Toshiba HWT-601XWHM3W-ETR Service Manual page 80

Item
7-3. 9) Control of Mode selection and forced stop & restart
Hydro Unit Control
You can change the operation mode and force the operation ON/OFF.
• Connect its connection cable to CN21 port on the PC board (MCC-1755) of the hydro unit.
Non-voltage contacts
MCC-1755
common
line
common
line
Hydro Unit sub PCB
9-1)Setting the inputs
I/P4: Heating/cooling mode switching input
• Non-voltage contact
Open: Heating mode
Close: Cooling mode
I/P5: Heating/cooling operation ON/OFF input
• Non-voltage contact
Open: Operation OFF (Remote controller OFF)
Close: Operation ON (Remote controller ON)
I/P6: Hot water operation ON/OFF input
• Non-voltage contact
Open: Operation OFF (Remote controller OFF)
Close: Operation ON (Remote controller ON)
I/P7: Emergency Shutdown input
• DN_B6 = "0"
• Non-voltage contacts
Open: Normal operation
Close: Emergency shutdown
It is possible to change the input signal when using I/P5, 6.
• DN_61 = "0": Starts ESTIA as the circuit between the terminals I/P5, 6 is closed.
• DN_61 = "1": Starts/Stops ESTIA as the circuit between the terminals I/P5, 6 is received closed pulse signal.
It is possible to change the input signal when using I/P7.
• DN_52 = "0": Stops ESTIA as the circuit between the terminals I/P7 is closed. (Default)
• DN_52 = "1": Stops ESTIA as the circuit between the terminals I/P7 is opened.
Related DN
DN
61
52
B6
Operation flow and applicable data, etc.
CN21
1
2
3
4
I/P 4
5
6
7
8
9
I/P 8
10
Stops ESTIA as the circuit between the terminals I/P5, 6 is opened. (Default)
Setting item
Input signal setting when using I/P5, 6 (CN21)
Input signal setting when using I/P7 (CN21)
Setting the objects to control of I/P7, 8
I/P 1
I/P 2
I/P 3
I/P 5
I/P 6
I/P 7 (DN_B6) 0: Emergency shutdown input
I/P 7
I/P 8 (DN_B6) 0: None
Locally procured
0: The terminals are opened, 1: The terminals are closed
Default
0: Statics input
0: Stop as I/P7 is closed
0: I/P7 ··· Emergency Shutdown input
I/P8 ··· None
79
Input items (Default setting)
I/P 1 Room thermostat input for heating
I/P 2 Room thermostat input for cooling
I/P 3 Hot water tank thermostat input
I/P 4 Heating/cooling mode switching input
I/P 5 Heating/cooling operation ON/OFF
I/P 6 Hot water operation ON/OFF
I/P 4 I/P 5 Control
0 0 Heating mode OFF
0 1 Heating mode ON
1 0 Cooling mode OFF
1 1 Cooling mode ON
Setting value
1: Pulse input
1: Stop as I/P7 is opened
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