Installation, Operation and Maintenance Manual
【
H-A077-E-00
】
3-Way Ball valve Type 23 Electric actuated Type Z 15
～
50mm (½”-2”)
9
Wiring diagram
- Reference connection example
Switching chart
- The contact limit switch is set approximately 8 degrees before the motor stop position.
- If the valve stops operating with the contact limit switch, the valve will not close completely and may
cause a leak.
- Do not stop the power supply by operating the contact limit switch. (The valve may not be “left
fully closed” or “right fully closed” and may leak.)
The wiring diagram shows the end
of the left open operation
OLS-1
：
Left open limit switch
SLS-1
：
Right open limit switch
OLS-2
：
Left open contact switch
SLS-2
：
Right open contact switch
M
：
Motor
R
ig
h
t
o
p
e
n
L
e
ft
o
p
e
n
SLS-2
OLS-2
Contact capacity: Max. 250VAC–1A
OLS-1
SLS-1
PCB
Space heater
Thermistor
Left open
Right open
OLS-2
Left open contact
OLS-1
Left open limit
SLS-1
Right open limit
SLS-2
Right open contact
Off by right fully open
By a little before right fully open
⑤
-
⑥
ON
Off by left fully open
By a little before left fully open
⑧
-
⑨
ON
Middle open
