Note 12) Solenoid valve with light/surge voltage suppressor
Note 13) Standard lead wire length for solenoid valve is 300 mm.
Note 14) For lead wire lengths other than standard, select “L1 or
L3”, and order the connector assembly desired. (Refer
to page 16.)
Note 15)
Standard lead wire length for pressure sensor is 3 m. Stan-
dard lead wire length with connector for switch for vacuum
and the lead wire length for switch with energy saving
function is 2 m.
Note 16) Select “C, L, L1, Y” when the pressure sensor (P, T) is
selected for
t
Pressure Sensor/Digital Pressure Switch
for Vacuum Specifications.
Since only grommet type is available for the pressure
sensor, sensor without lead wire cannot be selected.
Note 17) Select when no pressure switch for vacuum, pressure
sensor, or pressure switch for vacuum with connector
without lead wire is used.
Note 19)
When more than one option is selected, list
the option symbols in an alphabetical order.
Example) -BJ
Note 20) For an ejector, PE is common with EXH,
so it is not necessary to specify the op-
tion. Thread size is M3.
Note 21)
Only M3 is available for PD port size. Use
one-touch fitting (KJS series) or barb fit-
ting (M series) for piping.
Note 22)
Select body for manifold. Select “L” for mani-
fold type. When the common supply and indi-
vidual supply are mixed, please contact SMC.
Note 23) To prevent backflow of the manifold com-
mon exhaust, not for holding vacuum.
This option does not completely stop the
back flow of the exhaust air. Select port
exhaust type depending on purpose.
Note 24) When “-D” is selected for manifold option,
select “-P” option for single unit model
number.
Note 25)
When “J” is selected for e Combination of Supply
Valve and Release Valve and “W” (exhaust inter-
ference prevention valve type) is selected for i
Optional Specifications/Functions/Applications,
install a release valve or vacuum breaker.
Note 18) Supply port (PV) size of single unit:
ø6 (mm), ø1/4" (inch)
Type Port size
Metric
size
Inch
size
ø6
One-touch fitting
ø8
One-touch fitting
ø1/4"
One-touch fitting
ø5/16"
One-touch fitting
Symbol
06
08
07
09
u Vacuum (V) Port
Note 18)
¡PV:
Air pressure supply port/Port for vacuum source (Vacuum pump)
¡PS: Pilot pressure supply port
¡PD: Individual release pressure supply port
¡V: Vacuum port ¡EXH: Exhaust port
¡PE: Pilot pressure exhaust port
For details ⇒ Page 14
Vacuum Unit Series ZK2
y
Supply Valve/Release Valve/Digital Pressure Switch for Vacuum Connector Specifications
Connector type
Lead wire with connector
Common wiring
(Plug-in)
(For manifold)
L-type plug
connector
Note 13)
Note 14)
Note 13)
Note 14)
Note 16)
Note 17)
Note 16)
Note 16)
Note 17)
Note 17)
Note 16)
With lead wire for switch with
energy saving function
Symbol
C
C1
L
L1
L2
L3
W
N
Y
Y1
i
Optional Specifications/Functions/Applications
Note 19)
Type Function/Application
Without option —
Symbol
Nil
With one bracket for mounting
a single unit (Mounting screw
is attached.)
Pump system PE port female
thread specification
Note 20)
With individual release
pressure supply (PD)
port type
Note 21)
Vacuum break flow
adjustment needle
Round lock nut type
Manifold individual
supply specification
Note 22)
With exhaust interference
prevention valve
Note 23, 25)
B
e
For supply valve/release valve
Note 12)
t
Lead wire with connector
for pressure switch/
sensor
Note 15)
•
Use when a single unit is mounted to the floor
in an upright position is requested. (When
ordering only bracket, refer to page 22.)
•
Use for pilot pressure exhaust piping (Standard
pump system is released to the atmosphere.)
•
Use when supply pressure for vacuum
release which pressure is different from
the ejector supply pressure is requested.
•
Thicker than standard hexagon type.
More suitable for hand tightening.
•
Round lock nut improves operability
when manifold, pump system, or
exhaust port type is used.
•
Slotted type improves fine adjustment
performance when manifold, pump
system, or exhaust port type is used.
•
Adjust the supply pressure individually
for manifold in order to adjust the vacu-
um pressure reached by each ejector.
•
When ejectors are operated individually with
silencer common exhaust manifold, ex-
hausted air may flow backward from the V
port of ejectors that are OFF. Exhaust inter-
ference prevention valve prevents back flow.
Note) Refer to page 31 when mounting single unit to DIN rail.
C
D
J
K
L
P
W
Manifold common
release pressure supply
specification
Note 24)
•
When selecting “D” (with common release pres-
sure supply (PD) port) for t manifold option,
supplying a pressure which is different from for
common PV to common PD is requested.
Single Unit and Options
Note 26)
B C D J K
PL W
ZK2
P
Q
A
B
C
F
P to J
·
N
P to N
C
to
N
L
to
N
L
to
L3
C
to
L3
06
08
07
09
00
07
10
12
15
i
uytrewq
Note 26)
When “J or N” is selected for e Combination of Supply
Valve and Release Valve , “J or K” cannot be selected
for i Optional Specifications/Functions/Applications.
For options not in the table, please contact SMC.
When “N” is selected for both e (Combination of Supply Valve and Release Valve)
and t (Pressure Sensor/Pressure Switch for Vacuum Specifications)
(without supply/release valve, without switch, pressure sensor)
Non-valve (without supply/
release valve) When “N” is
selected for e
Vacuum break flow
adjustment needle
Screwdriver operation type
V
Bracket
Vacuum break flow
adjustment needle
Vacuum break flow
adjustment needle
PE port
PD port
Exhaust interference
prevention valve
Individual supply port
2
