SY3120 SMC, SY3120 Datasheet - Page 226

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SY3120

Manufacturer Part Number
SY3120
Description
2 position single
Manufacturer
SMC
Datasheet

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1. Attaching and detaching connectors
2. Crimping connection of lead wire and socket
3. Attaching and detaching lead wires with sockets
334
Strip 3.2 to 3.7 mm at the end of lead wires, insert the end of
the core wires evenly into the sockets, and then crimp it by a
crimping tool. When this is done, take care that the coverings of
the lead wires do not enter the core wire crimping area.
(Crimping tool: Model no. DXT170-75-1)
To detach a connector, remove the pawl from the groove by
Insert the sockets into the square holes of the connector (+, –
indication), and continue to push the sockets all the way in until
they lock by hooking into the seats in the connector.
(When they are pushed in, their hooks open and they are
locked automatically.) Then confirm that they are locked by
pulling lightly on the lead wires.
To detach a socket from a connector, pull out the lead wire
while pressing the socket’s hook with a stick having a thin tip
(approx. 1 mm).
If the socket will be used again, first spread the hook outward.
To attach a connector, hold the lever and connector unit
between your fingers and insert straight onto the pins of the
solenoid valve so that the lever’s pawl is pushed into the
groove and locks.
pushing the lever downward with your thumb, and pull the
connector straight out.
Attaching
Detaching
Caution
Core wire
crimping area
Socket
Socket
Hook
Hook
Cover
How to Use Plug Connector
Groove
Pin
Covering retainer
Connector
Series
Specific Product Precautions 2
Be sure to read before handling.
Refer to front matters 58 and 59 for Safety Instructions and pages 3 to 7 for 3/4/5 Port
Solenoid Valve Precautions.
Core wire
Covering
Cover
Groove
Hook
Pin
Lead wire
SY
Lever
DC polar indication
Lead wire
Connector
0.2 to 0.33 mm
Max. o.d. of covering:
ø1.7 mm
Socket
Lead wire
2
í With power saving circuit
<For DC>
Grommet, L/M Plug Connector
• Connect the standard type in accordance with the +, – polarity
• Since voltage specifications other than standard 24 V and 12 VDC do
• Please use caution regarding the allowable voltage fluctuation because
• When wiring is done at the factory, positive (+) is red and negative (–)
Operating Principle
With the above circuit, the current consumption when holding is re-
duced to save energy. Please refer to the electric wave data below.
• Please be careful not to reverse the
• Please use caution regarding the al-
indication. (The non-polar type can be used with the connections made
either way.)
not have diodes for polarity protection, be careful not to make errors in
the polarity.
there is about a 1 volt drop for a valve with polarity protection. (For
details, refer to the solenoid specifications for the individual valve.)
is black.
polarity, since a diode to prevent the
reversed current is not provided for
the power saving circuit.
lowable voltage fluctuation because
there is about a 0.5 volt drop due to
the transistor. (For details, refer to
the solenoid specifications for the in-
dividual valve.)
Power consumption is decreased by 1/4 by reducing the wattage
required to hold the valve in an energized state. (Effective
energizing time is over 62 ms at 24 VDC.)
Caution
Surge Voltage Suppressor
í Standard type (With polarity)
With surge voltage suppressor („S)
With light/surge voltage suppressor („Z)
í Non-polar type
With surge voltage suppressor („R)
With light/surge voltage suppressor („U)
LED
1: Starting current
Electric circuit (with power saving circuit)
Diode
1
Black (-)
Black (-)
Red (+)
Red (+)
(-) (+)
(+) (-)
(-) (+)
(+) (-)
2
Varistor
2: Holding current
(In the case of SY ∗∗0T, the electric
wave form of energy saving type)
0.4W
0.1W
24V
0W
Varistor
0V
Red (+)
Black (–)
62ms
Polarity protection diode
Polarity protection diode
Applied voltage
3
5
7
9
Standard
With power
saving circuit

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