Airwell ONG3-17 R410A, Руководство по обслуживанию

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CONTROL SYSTEM
Service Manual-CN Fixed RPM series
12-38
(v) The Louver is closed automatically when a unit is turned to SB or in the initialisation
stage after a power failure.
When the initialisation stage after the power failure is completed, the louver would
stay at the closed position or resume the last louver operation (i.e. Auto-swing or
User-position mode). It depends on whether the unit would stay in STBY mode or
restart the last operating mode from the EEPROM.
The current operation of the step motor (Auto-swing or User-position mode) and the
step motor position in User-position mode, are stored in the EEPROM.
(vi) Each step of the stepping motor consists of 8 states (Cf. Sect 10.3.2). To guarantee
a large enough torque, the duration of each state is 9.75ms. Therefore, the duration
of each step cycle is 78 ms (=9.75ms x8).
(vii) Each step of the stepping motor is equivalent to 0.703
o
.
(360
o
/2048 phases) x (8 states per step) x (4 phases / 8 states) = 0.703
o
(viii) Default ELUM is 5
o
for all models by default (Cf. Sect. 15.2).
(ix) When user presses the Manual Positioning Button in a R/C, the louver will move 10
steps (7
o
) and then stop automatically.
(x) To ensure the louver will stay at the correct range of Auto-swing angle, a “position
reset in Auto-swing” is performed once for every 8 auto-swing cycle
(xi) Summary of different type of Louver movement :
Note Status Action
1.
Louver-Reset
(after power failure
or power up)
The louver is closed by an angular movement of
(M ELUM) to ensure that it will be closed
completely. The louver position counter is then reset to
0
o
. Any further louver movement will be relative to this
angle.
2. From OPER to SB
The louver is closed by moving toward the (0
o
–
LockAngle
o
) position. The louver position counter is then
reset to 0
o
. Any further louver movement will be relative
to this angle.
3. From SB to OPER
If the unit is turned ON by the R/C, the louver will enter
Auto-swing mode or User-position according to the setting
in the R/C.
If the unit is turned ON by CLOCK, internal On-Timer or
the emergency Mode Button, the last louver operation is
resumed. When the louver leaves the SB (closed)
position, it is always open to (M ELUM) and
reset the louver position counter to MAX_SWG before
carries on with the normal louver operations.
4. After power failure
“Louver-Reset” first. Then, if the unit would stay in SB
mode, the louver would remain closed.
Otherwise, “from SB to OPER”, then continue with the last