39
5-4. Fan Function
■
FRS(N)-U20IA
■
FRS(N)-U20DA/EA/FA/GA
- Vref is the reference voltage for the adjustment of the output voltage by the voltage
distribution of Vs (Maximum output voltage), and the output voltage applied to the fan
is determined by the PWM control using the software.
2. Explanation for the operation
* TA7291P is the drive IC for the only DC motor, and used for control of the fan motor
* One input and output is used for the control of the fan motor
Motor IC No.2 Pin
(R:MT2/F:MT3/C:MT1)
Motor IC No.5 Pin
(R:MT2/F:MT3/C:MT1)
Low
High
Output
Stop
Low
13V
High
Remark
Input
1. Circuit Diagram
Summary of Contents for FRS(N)-U20IA
Page 4: ...3 2 EXTERNAL VIEWS 2 1 External Size FRS N U20IA...
Page 5: ...4 FRS N U20DA FRS N U20EA...
Page 6: ...5 FRS N U20FA FRS N U20GA...
Page 41: ...40 6 1 Wiring Diagram 6 DIAGRAM FRS N U20IA...
Page 42: ...41 FRS N U20DA EA FA GA...
Page 43: ...42 6 2 Circuit Diagram of Main PCB FRS N U20IA...
Page 44: ...43...
Page 45: ...44 FRS N U20DA EA FA GA...
Page 46: ...45...
Page 88: ...87 11 5 Dispenser Water Flow...
Page 89: ...88 CABINET 12 1 FRS N U20IA 12 EXPLODED VIEW PARTS LIST...
Page 90: ...89 MECH ROOM...
Page 91: ...90 R ROOM...
Page 92: ...91 F ROOM...
Page 93: ...92 F DOOR...
Page 94: ...93 R DOOR...
Page 99: ...98 CABINET 12 2 FRS N U20DA...
Page 100: ...99 MECH ROOM...
Page 101: ...100 R ROOM...
Page 102: ...101 F ROOM...
Page 103: ...102 F DOOR...
Page 104: ...103 R DOOR...
Page 110: ...109 CABINET 12 3 FRS N U20EA...
Page 111: ...110 MECH ROOM...
Page 112: ...111 R ROOM...
Page 113: ...112 F ROOM...
Page 114: ...113 F DOOR...
Page 115: ...114 R DOOR...
Page 121: ...120 CABINET 12 4 FRS N U20FA...
Page 122: ...121 MECH ROOM...
Page 123: ...122 R ROOM...
Page 124: ...123 F ROOM...
Page 125: ...124 F DOOR...
Page 126: ...125 R DOOR...
Page 132: ...131 CABINET 12 5 FRS N U20GA...
Page 133: ...132 MECH ROOM...
Page 134: ...133 R ROOM...
Page 135: ...134 F ROOM...
Page 136: ...135 F DOOR...
Page 137: ...136 R DOOR...