Toshiba HWT-601XWHM3W-ETR - Page 83

82
7-3.
Hydro Unit Control
12) Output signal control
(Connect its connection cable to the CN22 terminal on the PC board (MCC-1755) in the hydro unit.)
Additional Hydro Unit outputs
This unit has four output ports. They are selectable by DN. Table1 shows the selectable output functions and default
settings.
Volt free contact – specification show below:
AC230 V; 0.5 A (maximum)
DC24 V; 1 A (maximum)
Minimum current; 10 mA
0: Alarm output
• Open: No alarm
•Close: Alarm
1: Compressor operation output
• Open: Compressor is stopping
• Close: Compressor is operating
2: Defrost operation output
• Open: Unit is not defrost operating
• Close: Unit is defrost operating
3: Boiler control output
• Open: Normal operation
• Close: Boiler operation output
4: During safety or protection control running (Only indoor unit safety or protection control)
• Open: Normal operation
• Close: Release control running
5: During backup heater running
• Open: Backup heater not running
• Close: Backup heater running
6: During hot water cylinder heater running
• Open: Hot water cylinder heater not running
• Close: Hot water cylinder heater running
7: Heating operation output
• Open: Not heating operation
• Close: Heating operation
(Include HP, Heater and thermo off, except error occurring.)
8: Cooling operation output
• Open: Not cooling operation
• Close: Cooling operation
(Include HP and thermo off, except error occurring.)
9: Hot water operation output
• Open: Not hot water operation
• Close: Hot water operation
(Include HP, Heater and thermo off, except error occurring.)
Item Operation flow and applicable data, etc.
common line
MCC-1755
O/P 4
common line
CN22
6
5
4
3
2
1
O/P 2
O/P 3
O/P 1
Hydro Unit sub PCB
Locally procured
Default setting
O/P 1 (DN_6CA) Alarm output
O/P 2 (DN_6CC) Defrost operation output
O/P 3 (DN_6CD) Boiler control output
O/P 4 (DN_6CB) Compressor operation output
Selectable output items (DN_6CA ~ 6CD)
0 Alarm output
1 Compressor operation output
2 Defrost operation output
3 Boiler control output
4 Safety or protection control running
5 During backup heater running
6 During hot water cylinder heater running
7 Heating operation output
8 Cooling operation output
9 Hot water operation output