Vacuum UnitZK2 Series

1. Features (1)

- Improved energy savingMounting of the digital switch for vacuum with an energy saving function reduces air consumption by 90% minimum.

Energy saving ejector Existing model

Air supply

Air supply

Vacuum Vacuum

ExhaustExhaust

Exhaust

Air is consumed and exhausted intermittently only when the vacuum pressure

lowers.

Air is consumed and exhausted continually during suction of work

piece.Work piece Work piece

1. Features (2)- Improved energy savingThe renovated two-stage ejector reduces air consumption and increases suction flow rate, which improves evacuation efficiency (ratio of suction/consumption).

Vacuum digital switch with energy saving function

Pilot valve (for supply)

Dual 2 port valve

Check valve

Pilot valve (for vacuum break)

Suction flow rate

Air consumption

increased

reduced

1st nozzle 2nd nozzle

Suction flow rate

1. Features (3)- Supply valve with self-holding functionThe supply valve turns on with instantaneous energizing, and holds evacuation to prevent a work piece from dropping and helps lower power consumption.

- Interlink between supply valve and break valveThe supply valve interlinks with the vacuum break valve, and turns off when the vacuum break valve turns on. The OFF signal, which was required for existing self-holding products, is unnecessary.

Pilot valve power consumption: 0.35W

Vacuum digital switch with energy saving function

Pilot valve (for supply)

Dual 2 port valve

Check valve

Pilot valve (for vacuum break)

1. Features (4)

- All-in-one designThe components for the vacuum ejector are integrated to be compact.

- Compact and light weightCompared with the existing model:Weight: -58% (Single unit: 81g)

Volume: -22%

Valve assembly

One-touch fitting

Vacuum break flow adjusting needle

Silencer Suction filter

Vacuum pressure switch

Vacuum

Supply

Existing model: 195g

2. Background of Development 　　　　　　　　　　　　　　　　　　　　　　

(1) To respond to market requests and improve (1) To respond to market requests and improve customer satisfaction.customer satisfaction.

　 - Reduced air consumption, reduced wiring, compact and light weight, etc.

(2) To reinforce market(2) To reinforce market competitiveness.competitiveness.　　 - Totally improved competitiveness including improved

evacuation performance and energy saving.

(3)To remodel the most versatile model among (3)To remodel the most versatile model among vacuum ejector series, and expand share in vacuum ejector series, and expand share in wide variations of industries.wide variations of industries.

　　 - Equipped with the performance, functions and ease of use to consolidate the ZM, ZX and ZY.

　 - Wide variations that can be promoted to both customers of ejectors and vacuum pumps.

3. Applications 　　　　　　　　　　　　　　　　　　　　　　

Applicable to general environments of EP, CP, MP, FP and MDP industries. 　　　　　　　　　　　　　　　　

Unpacking

Panel conveyer

Transfer

Packaging

4. Specifications and Performance 　　　　　　　　　　　　　　　　　　　　　　　　

The ZK2 is an energy saving product with improved suction flow rate to air consumption.

Item ZK2 ZX ZM

Nozzle diameter 07 10 12 15 05 07 10

05

H

07

H

10

H

13

H

07

M

10

M

13

M

13

S

15

S

Standard supply

pressure0.35 0.4 0.45 0.5 0.35 0.45

Suction flow rate

29 44 61 67 5 10 22 15 30 50 66 23 38 44 37 45

Consumed flow rate 24 40 58 90 13 23 46 17 30 60 90 33 60 85 88 110

Vacuum pressure -91kPa -84kPa 　 -84kPa

(A)

(B)

(C)

(A): MPa(B): L/min(ANR)(C): L/min(ANR)

Air consumption -27%, Suction flow rate +26%

Air consumption -33%, Suction flow rate +16%

Air consumption -31%, Suction flow rate +39%

Air consumption -18%, Suction flow rate +49%

5. Construction (1) Vacuum Ejector 　　　　　　　　　　　　　　　　　　　　　　　　　　　　

Vacuum break pilot valve

Supply pilot valve

Vacuum break valve

Supply valve

Compressed air supply port (PV)

Vacuum port (V)

Vacuum break flow rate adjusting needle

Sound absorbing materialFilter element

2-stage ejector

Check valve

Vacuum digital pressure switch

Digital pressure switch with energy saving function

Exhaust (side surface)

Valve assembly

5. Construction (2) Vacuum Pump System

Vacuum break pilot valve

Supply pilot valve

Vacuum break valve

Supply valve

Vacuum pressure supply port (PV)

Vacuum port (V)

Vacuum break flow rate adjusting needle

Pilot pressure supply port (PS)

Filter element

Vacuum pump adapter

Pressure sensor assembly

Pilot pressure exhaust port (PE)

Valve assembly

7. How to Order (1) Single Unit 　　　　　　　　　　　　　　　　　　

Symbol System Body Exhaust

P Pump system

Single ―

Q Manifold ―

A

Ejector

SingleSilencer

B Port

CManifold

Common

FIndividual

port

(1) System and body type

Symbol System Dia.

00 Pump system ―

07

Ejector

0.7

10 1.0

12 1.2

15 1.5

(2) Nozzle nominal diameter

Symbol SupplyVacuum

break

K N.C. N.C.

J N.C. None

RSelf-

holdingN.C.

N None None

(3) Supply / Vacuum break valve

Symbol Voltage

5 DC24V

6 DC12V

0 Not applicable

(4) Rated voltage

Symbol TypePressure

range (kPa)Exhaust

P Pressure sensor

0~-100 ―

T -100~100 ―

A

Vacuum digital

pressure switch

0~101

NPN

2 outputs

Unit conversion

B SI unit only

C PNP

2 outputs

Unit conversion

D SI unit only

E

-100~100

NPN

2 outputs

Unit conversion

F SI unit only

H PNP

2 outputs

Unit conversion

J SI unit only

KEnergy saving switch

100~-100

NPN

1 output

Unit conversion

Q SI unit only

R PNP

1 output

Unit conversion

S SI unit only

N None

(5) Pressure sensor / Vacuum pressure switch

(6): Connector for (3) and (5)(7): Vacuum port size(8): Option

Vacuum pump system

Ejector system (with valve)

Ejector system (without valve)Remains blank

when no option is selected.

7. How to Order (2) Manifold 　　　　　　　　　　　　

Symbol No. of stations

01 1

02 2

… …

10 10

(1) No. of station

SymbolPort

standardSystem Port

Pmm

Pump systemCommon PV, Common PS

A Ejector Common PV

PNInch

Pump systemCommon PV, Common PS

AN Ejector Common PV

(2) System (combination of ports)

Symbol Type

2 Pump system Without silencer

1Ejector

Common silencer exhaust

2 Without silencer

(3) Exhaust type

Symbol Spec.

L Individual wiring

F D-sub connector

P Flat-ribbon cable

N No wiring

(4) Wiring specification

Symbol Option

B DIN rail mounting

DCommon vacuum pressure supply

port (PD)

L Individual supply

(5) Option

Symbol Type

NIL Assembled with units

ANot assembled with units,

Shipped as a part

(6) Assembly on manifold

8. Dimensions 　　　　　　　　　　　　　　　　　　　　　

Symbol A B C D E F G H J K L M

Dimension 79.8 104 79 75 38.5 16.5 19.4 27.5 15 45.9 8.4 2x4.5

Manual override (for supply valve) Manual override (for vacuum break valve)

Supply port (PV)

Vacuum break needle

Vacuum port (V)

Symbol P Q

mm06 6 8.25 4

08 11.4 6

Inch07 1/4" 10.8 4.76

09 5/16" 11.4 6

Symbol N

mm 06 6 9.7

Inch 07 1/4" 12.3

With

acr

oss

fla

t

9. Energy Saving Switch (1)

The digital pressure switch with energy saving function significantly reduces air consumption.

Operation principle

The switch keeps the vacuum pressure built up by the ejector, and stops evacuation when the set vacuum pressure is achieved, and resumes evacuation automatically when the vacuum pressure lowers.

Cum

ulat

ive

flow

rat

e (e

ject

or a

ir co

nsum

ptio

n)

Vac

uum

por

t pre

ssur

e

Signal to supply valve

Atm. pressure

Ultimate vacuum pressure

Existing

Energy saving

The existing ejector continues to consume air during suction.

Existing ejector

Ejector with energy saving switch

The air supply is stopped during

suction.

Ejector with energy saving switch

Operation Supply valve

Vacuum build-up

Suction confirmation and pressure (P1) achieved

Keeping evacuation

Suction and transfer complete and work piece released

Keeping evacuation

Suction complete and pressure (P2) achieved

Suction confirmation and pressure (P1) re-achieved

Vacuum pressure (P3) lowering

9. Energy Saving Switch (2)

Settings

Adjustment of the following parameters may be required for proper operation of the energy saving function. (If the default values are suitable for application, the adjustment is unnecessary.)

Please control on and off of the vacuum break valve with external equipment.

Adjustment parameters

P_1: Vacuum pressure for suction confirmation (switch output ON)

--- Default value: -70kPa

H_1: Pressure variation when suction completes (switch output OFF)

--- Default value: 10kPa

H_2: Pressure drop variation when the supply valve is turned on

--- Default value: 5kPa

10. Precautions for Handling 　　　　　　　　　　　　　　　　　　　　　

Energy saving switch

1. Use under operating conditions with small vacuum leakage.

2. Sufficiently evaluate the pump before use.

3. The energy saving switch cannot be used in the vacuum pump system.

4. The combination of the actuation types of the supply valve and vacuum break valve is N.C./N.C. only.

Energize the self-holding type supply valve for 20ms at least.

When using the pump system, set the PS and PD pressures to 0.3MPa or less.

The filter case is made of resin. Do not apply excessive load to the piping of the vacuum piping port (V).