Azbil VCL-5 Series User manual

Enclosed Limit Switch
VCL-5✽✽✽-✽✽ Series
User's Manual
No. CP-SP-1049E
Thank you for purchasing our product.
This manual contains information for
ensuring correct and safe use of this
product.
Please read and understand it thor-
oughly before using this product,
and keep it nearby after installation for
handy reference.

NOTICE
© 1999-2012 Azbil Corporation All Rights Reserved.
Be sure that the user receives this manual before the product is used.
Copying or duplicating this user’s manual in part or in whole is forbid-
den. The information and specifications in this manual are subject to
change without notice.
Considerable effort has been made to ensure that this manual is free
from inaccuracies and omissions. If you should find an error or omis-
sion, please contact the azbil Group.
In no event is Azbil Corporation liable to anyone for any indirect, special
or consequential damages as a result of using this product.

i
■About Icons
The safety precautions described in this manual are indicated by various icons.
Please be sure you read and understand the icons and their meanings described
below before reading the rest of the manual.
Safety precautions are intended to ensure the safe and correct use of this prod-
uct, to prevent injury to the operator and others, and to prevent damage to proper-
ty. Be sure to observe these safety precautions.
■Examples
Use caution when handling the product.
The indicated action is prohibited.
Be sure to follow the indicated instructions.
SAFETY PRECAUTIONS
WARNING Warnings are indicated when mishandling this
product might result in death or serious injury.
CAUTION Cautions are indicated when mishandling this product might result in minor injury to the user, or
only physical damage to the product.

ii
WARNING
CAUTION
The environmental conditions for the safe use of this limit switch are
described in the product specification sheet.
Use this limit switch within the allowable range of each characteristics.
Check the limit switch periodically to make sure that it is operating
normally.
If the cover or housing of this limit switch becomes dented or cracked,
replace the complete switch immediately.
Failure to do so may result in loss of seal performance.
Be sure to turn the power supply of the equipment OFF before wiring
the limit switch. Failure to do so might result in electric shock
depending on power supply voltage or involved in unsafe condition
such as unintentional machine start.
Never use or leave the limit switch unattended with the cover or
conduit open.
Doing so might allow ingress of water or dust, resulting in malfunction.
This switch is not explosion-proof.
If an explosion-proof specification is required, use the VCX-5✽✽✽series.

Contents
iii
Safety Precautions
Conventions Used in This Manual
Chapter 1. OUTLINE
■Features ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・1
■Specifications ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・1
Chapter 2. NOMENCLATURE
■Appearance and Structure of the Limit Switch ・・・・・・・・・・・・・・・・2
■Model Number Construction ・・・・・・・・・・・・・・・・・・・・・・・・・・・2
Chapter 3. INSTALLATION
■Installation ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・4
■Changing the Lever Direction ・・・・・・・・・・・・・・・・・・・・・・・・・・6
■Changing the Head Position ・・・・・・・・・・・・・・・・・・・・・・・・・・・6
Chapter 4. WIRING・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・7
Chapter 5. ADJUSTMENT PROCEDURE
■Items to be Checked before Operation ・・・・・・・・・・・・・・・・・・・・・9
■Adjustment・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・9
Chapter 6. MAINTENANCE & INSPECTION
■Maintenance Checklist ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・10

Conventions Used in This Manual
iv
The following conventions are used in this manual:
Handling Precautions
:Handling Precautions indicate items that the user should pay attention to
when handling the limit switch.
(1), (2), (3) : The numbers with the parenthesis indicate steps in a sequence or
indicate corresponding parts in an explanation.

■Features
•2 switches are arranged as follows:
• One each switch operates cw or ccw with center neutral.
• 2 switches operate simultaneously in both direction.
•Sealing by V-ring for shaft and O-rings for stationary parts allows outdoor use.
•Ample space in the terminal box and G3/4 (PF3/4) conduit connection provide
easy wiring.
•IP67
■Specifications
The detailed specifications for the limit switch are described in the product
specification sheet. The product specification drawing Nos. are shown below.
These drawings can be obtained from your Azbil Corporation representative.
Product specification drawing No.:AD50424E
Chapter 1 OUTLINE
1
WARNING
Use this switch within the specifications described below.
Item Specifications
None H L
Installation sites Outdoor
Protective structure IP67 or equivalent (JIS water-proof type)
Operating temperature range -10 to +70°C -10 to +100°C -55 to +70°C
Max. operating humidity 98%RH

Chapter 2 NOMENCLATURE
2
■Appearance and Structure of the Limit Switch
The force applied from outside the limit switch is transferred to the actuator lever
→shaft →plunger →internal switches, to switch the electrical circuit.
The limit switch lever rotates both cw and ccw.
■Model Number Construction
VCL-5 ✽✽✽ -✽ ✽
Roller
Lever
V-ring seal
Cover
Internal Switch
Insulator
Seal
Return Spring
Plunger
Housing
Conduit
Plug
Head fixing screw
Seal
Head
Shaft
Cover mounting
screw
Lever mounting screw
Ambient
Non : General use
H:For High Temperature *
L:For Low Temperature *
Contact
Non : General use
K:For Low voltage/current load
Type of actuater
01 : Standard Roller Lever
02 : No Actuater
03 : Adjustable-length Roller Lever Actuator
Switch Arrangement
0:Center neutral type
1:Simultaneous type
* These are usable temperature, refer to page 1 for the
certified temperature.

Chapter 3 INSTALLATION
This chapter describes the installation procedure for the limit switch.
3
WARNING
This switch is not explosion-proof.
If an explosion-proof specification is required, use the VCX-5✽✽✽ series.
CAUTION
Until wiring, do not remove the cover and the plug of the limit switch in order
to prevent dust or liquid from entering the limit switch.
Failure to prevent this might result in malfunction or contact failure.
As soon as wiring is completed, replace the cover of the limit switch to
prevent dust and/or liquid from entering the switch housing. Failure to prevent
this might result in malfunction or contact failure.
Before using the limit switch for the first time, protect it using a dust-proof,
water-proof sheet to prevent cement and/or paint from adhering to the switch,
as this may cause lever malfunction.
Do not leave the limit switch in an atmosphere containing gases (H2S, SOx
etc.) that may adversely affect the contact and/or other materials. Failure to
observe this instruction may cause contact failure.
Do not allow limit switch to come into contact with solvent (benzene,
kerosene, alcohol, etc.) that may adversely affect it. Failure to observe this
instruction may result in malfunction and/or insulation failure.
Do not step on the limit switch, place heavy objects on it or hit it with a hard
object. Never apply to the switch lever a force five times larger than its
operation force (OF). Failure to observe this instruction may result in
malfunction.
When using sealing or other locking agent on the conduit, make sure that it
does not generate gasses which may cause contact failure.
The limit switch must be mounted using heat insulating materials, shielding
plates, etc., so that its temperature will not exceed the working temperature
range as a result of radiant heat or heat transfer.
If the limit switch is subjected to continuous vibration or impact, be sure to
take the necessary measures to isolate it from vibration.

■Installation
●Installation
The plate on which the limit switch is mounted must be sufficiently rigid, be made
of an appropriate material in an appropriate shape and be thick enough to retain its
shape by the operating force of the limit switch.
When mounting the limit switch, use washers to prevent the screws from working
loose. The screws must be fastened according to the appropriate tightening torque
shown in the table below.
●Mounting the lever
The lever mounting screw must be fastened according to the appropriate tightening
torque shown in the table below.
●Dog angle and speed
•When the dog speed is less than 0.5m/s •When the dog speed is faster (i.e. 0.5m/s ≤V ≤2m/s)
V < 0.5m/s 0.5m/s ≤V ≤2m/s
V (m/s) max. αθ
0.5 45° 45°
0.6 40° 50°
1.3 30 to 35° 55 to 60°
2.0 15 to 25° 65 to 75°
4
Chapter 3 INSTALLATION
Screw size Tightening torque
M5
(Hexagon socket head cap screw) 5 to 6 N • m
Tightening torque
4 to 5.2 N • m
V=0.25m/s max.
Set lever vertical and select dog angle(α)
according to dog speed referring the table below.
Set lever angle(θ) and dog angle(α) according to
dog speed(V) referring the table below.
The dog angle(β) of the rear edge shall be set
within a range of 15° to 30° to avoid the double
action of lever.
V (m/s) max. α
0.40 30°
0.25 45°
0.10 60°
0.07 75°
0.05 90°