INSTRUCTIONINSTRUCTION MANUALMANUALCONVEYER FLOW SW ITCH

MODEL： PA-1E/2E

EXPROSION PROOF TYPE

Meanings of indications for safety used in this Instruction Manual are as follows.
WARNING:

Indicates that improper handling assumes the risk of a fatal or serious injury.

CAUTION:

Indicates that improper handling assumes the risk of injury or damage to property only.

TOWA SEIDEN INDUSTRIAL CO., LTD.
HEAD OFFICETOKYO OFFICENAGOYA OFFICE

Phone: 81-6-6340-5522, Fax: 81-6-6340-5519
Phone: 81-3-5484-2171, Fax: 81-3-5484-2175
Phone: 81-52-937-5817, Fax: 81-52-937-5836

OSAKA PLANT

Phone: 81-6-6340-2831, Fax: 81-6-6349-6551

URL http://w w w .tow a-seiden.co.jp№EPA1002

2012/03/30

Table of Contents【１】Condition ・・・・・・・・・・・・・・・・・・・・・・・・・・・・

2【２】Outline ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・

2【３】Attachment of blade to shaft ・・・・・・・・・・・・・・・・・・・・・・・・・・3【４】Model number ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・3【５】Specifications ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・4【６】Wiring ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・

4【６】－１．Detachment and attachment of cover ・・・・・・・・・・・・・・・・・・・・4【６】－２．Output ・・ ・・・・・・・・・・・・・・・・・・・・・

5【６】－３．Method of wiring for terminal box ・・・・・・・・・・・・・・・・・

6【７】Construction ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・ 6【７】－１．Protect tube ・・・・・・・・・・・・・・・・・・・・・・・・・・

7

1. Condition
This instrument is a product at the place where there is flammable vapors or combustible gas ispresent, to detect the presence or absence of material conveyors, ducts, in the chute. Hit by thematerial was put in place to paddle, switch contact output of the product instead. Is to be used tocontrol the automatic operation of various transport machine, this output signal.
2. Outline

This product is a switch in which a signal is changed by a detected object pressing theblade.
The following diagrams show operating examples on the belt conveyor.
① Normally the blade is positioned at the standby position due to its own weight.
② The detected object pushes the blade up, and when the blade angle exceeds the operating
angle, the signal is changed. As long as the detected object pushes the blade, this state ismaintained.
3If there is nothing to detect, the signal is returned.

The output is automatically switched as shown below. This product has a counterclockwise
direction operation type and operation type clockwise direction.

Clockwise action typeCounterclockwise action type

ON between terminals C and H
OFF between terminals C and L
OFF between terminals C and H
ON between terminals C and L2

3. Attachment of blade to shaft
1Insert a blade into the shaft while paying attention to the direction of the blade so thatthe main shaft protrudes by approximately 3mm.
2

Adjust the notch of the shaft and the blade boss.

3

Reliably tighten the hex socket bolt (M5) to fix the product.

Approx. 3mm

Shaft notch

4. Model number

PA －２E

PExtemal pull-wire type
Ｐ： Cable gland type
Blank ： Binding expressions screw pressure conduit
Micro switch RateBlank ： ＡＣ２５０Ｖ １０Ａ DC２５０V ０．３A ＤＣ１２５Ｖ ０．６Ａ
Ｚ： ＡＣ２５０Ｖ ０．１Ａ DC３０V ０．１A

Quantity of micro switch
２E： 2 pcs
１E： 1 pc
Explosion proof type of Conveyer flow switch

35. Specifications
ModelPA-1E

Installation method

PA-2E

Flange JIS5K65A (Equivalent)

Outputeach1CStandard

250 V AC 10 A ; 250 V DC 0.3 A

Z type250 V AC 0.1 A ; 30 V DC 0.1 A

Contact capacity (resistance load)
Operating angle (Standard)

Approximately 20°

Hysteresis

Approximately 5°

Materials used (main)

Blade

SUS304Main shaft

SUS304

Protector tube

SUS304

Flanged case

Aluminum alloy

CoverAluminum alloy

Seal

Nitrile rubber, PTFEWorking ambient temperature
Paint color-10～40°C

Case, coverProtection level

7.5BG 4/1.5
Explosion proof d2G4

6. Wiring.6-1 Detachment and attachment of cover
・ The cover can be attached by screwing.
・ To remove the cover, loosen the screw while paying attention to the O-ring.

Whenattaching, check that the O-ring does not twist, sufficiently tighten the screw, andreliably screw.

CautionSufficiently and reliably screw the cover.
If the product is used outdoors, rainwater and dust will enter, and this may cause afailure.

46-2．Output（１）ＰＡ－１Ｅ（when nothing is detected）
Ｅ is the internal gland terminal. The external ground terminal is locatedon the side of the terminal box.

ＥＬＣＨ
使用せず
Notused（２）ＰＡ－２Ｅ(when nothing is detecte）
There are three circuits, please confirm based on the circuit was to specify.
Ｅ is the internal gland terminal. The external ground terminal is locatedon the side of the terminal box.

jumper typeＥnormal open type normal close typeＥ

Ｌ1 Ｃ1 Ｈ1Ｌ2 Ｈ2

Ｌ1 Ｃ1 Ｈ1Ｃ2 Ｈ25Ｅ

Ｌ1 Ｃ1 Ｈ1Ｃ2 Ｌ2

６－３．Method of wiring for terminal box
When drawn into the terminal box external
conductors, please make sure that either
method of the following points.
ａ． Lead-screw pressure conduit methodbinding expression Draw the external
conductor, screw the sealing conduit andＧ1/2"

operating to Fitch(G1/2) service entrance
conductors. Use the external conductor
insulated wire. Tightening on the mountain
was bound over in the effective portion of
the screw 5, using the lock nut.
ｂ．Cable gland type (order separately)
There is a back and forth through the cable
is no longer（※）,and go by screwing downthe ground cable. Tighten 1.5~2mm from
where this cable is no longer move. Pleasetighten the set screw tightened after theloosening of ground(about on revolution toセットスクリュウ
set screw
グランドgland1.5)※ No gap between the interior of thecable as the influx of flammable gas
in difficult thing is finished
Diameter φ1～12mm. Please use one
cross-section of the cylindersurface is smooth with no internal
gaps.

6

ケーブルcable7.Construction
７－１．Protect tube7