267
Main Parts
3.2 Electronic Expansion Valve
Micro-Computer
Pulse Signal
2-Phase Permanent Magnetic Pulse Motor
Control 0 to 2950 Pulse by 1 Pulse (EVO)
Control 0 to 480 Pulse by 1 Pulse (EVB/MV5)
Refrigerant Flow Control
Precise Control
Pulse Motor
Needle
Specication
Items Specication
Models to be Applied For Main Cycle (EVO) For Bypass Line (EVB/MV5)
Type PAM Series UKV Series
Refrigerant Used R410A
Working Temperature Range -22 - 158°F( -30
℃
- 70
℃
)
Mounting Direction
Drive shaft in Vertical Direction
within an Angle of 90o as Maximum
Drive shaft in Vertical Direction
within an Angle of 45o as Maximum
Flow Direction Reversible
Rated Voltage DC12V+1.2V
Drive Condition
100 - 200 PPS
2-2 Phase Excitation
80+5 PPS
1-2 Phase Excitation
Coil Resistance 100Ω 46Ω+3Ω (at 20
℃
)
Wiring Diagram,
Drive Circuit and
Activation Mode
Phase 1 2 3 4
φ1 ON OFF OFF ON
φ2 ON ON OFF OFF
φ3 OFF ON ON OFF
φ4 OFF OFF ON ON
OPEN: 4→3→2→1→4
CLOSE: 1→2→3→4→1
Phase 1 2 3 4 5 6 7 8
φ1 ON ON OFF OFF OFF OFF OFF ON
φ2 OFF OFF OFF OFF OFF ON ON ON
φ3 OFF OFF OFF ON ON ON OFF OFF
φ4 OFF ON ON ON OFF OFF OFF OFF
OPEN: 1→2→3→4→5→6→7→8
CLOSE: 8→7→6→5→4→3→2→1
φ3
φ1
φ2 φ4
M
φ4
φ2
φ1 φ3
M
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