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[3] Wiring for 5-port electromagnetic valve
Connect the two wires to terminals no.
q
(+) and
w
(–) of the controller. Terminals no.
q
and
w
of the AC-1 type
controller have polarity. The electromagnetic valve has no polarity. Some types with a built-in surge killer have
polarity, which requires special attention in the connection process.
Caution
As a rule, the 5-port electromagnetic valve has no polarity, though there are exceptions. If a 5-port
electromagnetic valve with polarity is used, be careful about the +/– polarity in wiring. Note that improper polarity
selection may result in the burning of the valve.
Note:
The air piping of the 5-port electromagnetic valve is divided into the 'normal-open' side pipe and 'normal-closed'
side pipe. The 'normal-open' side should be installed on the proximity switch B side and 'normal-closed' on the
proximity switch A side. The pump does not run if this connection is incorrect. To run the pump, interchange the
air piping of the 5-port electromagnetic valve or interchange the wires of proximity switches A and B.
[4] Wiring for alarm output 1
Connect with terminals no.
!3
and
!4
for the use of the detection of damaged bellows.
*
Please refer to the "AC-1 Controller Instruction Manual" for details.
•
Operating mechanism
If the bellows are damaged while the power switch is on, and the leaked liquid causes the black and white
electrode lead wires on the either the left or right side to conduct electrically, the controller will be activated to
turn the 5-port electromagnetic valve off (and stop the pump). Then, the red LED (bellows abnormality
indicator lamp) on the controller will turn on. Simultaneously,m the alarm will be generated externally.
[5] Wiring for alarm output 2
Connect with terminals no.
!1
and
!2
for use of the time-up function.
*
Please refer to the AC-1 Controller Instruction Manual for details.
•
Operating mechanism
Alarm output 2 (Time-up function with AC-1 type controller)
If the time set in the timer is exceeded due to suspended operation or reduced stroke number of the pump, the
time-up indicator [Time Up] (yellow) will turn on. Simultaneously, the alarm will be generated externally.
