65
To be continued on the next page.
<Output pulse signal and valve action>
Output(phase)
{
1
{
2
{
3
{
4
ON
ON
OFF
OFF
OFF
ON
ON
OFF
OFF
OFF
ON
ON
ON
OFF
OFF
ON
Output
A
E
D
C
B
Closing
Opening
Completely sealed (80-100 pulses)
Number of pulses
Valve fully open
at 2,000 pulses
V
alve position (volume)
Valve closing:1
➔
2
➔
3
➔
4
➔
1
Valve opening:4
➔
3
➔
2
➔
1
➔
4
The address of the pulse output is shifted using the procedures
mentioned earlier.
w
1. All output phase will turn OFF when the LEV(A), SLEV
stops operating.
2. When the output phase is terminated or when the phase
shift is not according to frequency, the motor rotation will
become irregular, causing the motor to vibrate or lockup.
w
When the power supply is on, the closing signal of 2,200
pulse will be transmitted to decide the position of the valve.
The valve position can be determined when point A is
reached.
The LEV(LEV(A), SLEV) will not vibrate or make noise
when the valve is operating smoothly. However, when the
number of pulses change from E to A ,or if the valve
lockup, there may be more noise than under normal
circumstances.
• The noise can be heard by resting your ear on the handle
of a screwdriver that is pressed against the top of the
LEV(LEV(A), SLEV) valve.
2
LEV(A), SLEV action
1
2
3
4
Expansion valve (LEV(A), SLEV: Outdoor unit)
1
1
Notes on expansion valve action
• LEV(A), SLEV to stepping motor ON/OFF after outdoor controller board has received pulse signal.
• The valve position can be changed according to the pulse signal number ratio.
<connection between the LEV(A), SLEV and the outdoor controller board>
Note: Because the numbers of the relay connector and the connector on the controller board side are different, wiring work
must rely on the colors of the wires.
M
LEV(A), SLEV
Blue
{
4
{
3
{
2
{
1
{
4
{
3
{
2
{
1
2
5
1
3
4
6
6
5
4
3
2
1
BRN
RED
BLU
ORN
YLW
WHT
Brown
Yellow
Red
White
Orange
1
5
2
3
6
4
Relay connector
(Only LEV(A))
Controller board
DC12V
Drive circuit
Connector (CN60)
(LEV(A), SLEV)
OC272A--3.qxp 03.9.4 11:10 AM Page 65
Содержание PUMY-P125VMA
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