Specifications

-130-
2 LEV2
Pulse Signal Output and Valve Operation
Output (Phase) Output State
No. 1 2 3 4
ø1 ON OFF OFF ON
ø2 ON ON OFF OFF
ø3 OFF ON ON OFF
ø4 OFF OFF ON ON
LEV Valve Closing and Valve Opening Operations
Valve Opening Angle (Flow Rate)
Increased choke range
(80 ~ 100 pulses)
Pulse Count
Full Open
2000 pulses
Valve Closing
Valve Opening
C
A
B
Output pulses change in the following orders when the
Valve is Closed 1 → 2 → 3 → 4 → 1
Valve is Open 4 → 3 → 2 → 1 → 4
*1. When the LEV opening does not change, all output
phases are OFF.
2. When the output opens a phase and stays ON, the
motor will not run smoothly and will clack and
vibrate.
3. When the power source is turned on, a close valve
signal (2200 pulse) is sent to confirm the valve
position, ensuring a starting point of
A
.
4. When the valve is operating smoothly, there will be
no sound or vibrations from the LEV, when opera-
tion goes from point
E
to point
A
, the valve locks
and open phases create a considerable noise.
5. The noise emanates from the driver and can be
easily discerned by placing a screwdriver against it
and then placing your ear against the handle.
D
E