Optex SS Checker SC-T4 Instruction Manual

SC-T4

Thank you very much for purchasing OPTEX
Transmitter SC-T4.
All of this instruction manual must be read before
operation of the Transmitter SC-T4, for safe and proper
operation.

This instruction manual should be kept for future
reference such as maintenance.

Transmitter

Instruction Manual

2006.8 59-1362-0

For more information on OPTEX products, contact your
dealer or visit our website listed below;

OPTEX CO., LTD.

5-8-12 Ogoto Otsu Shiga 520-0101 Japan
tel : [phone]
fax : [phone]
E-mail : [e-mail]
website : http://www.optex.co.jp/env/

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The Contents of Packaging

Transmitter

Instruction Manual20 Y-terminal

Mounting Bracket

2 Transmitter Fixing Screw

In the unlikely event that there are any missing components or defects,
please contact your dealer.

SC-T4

Thank you very much for purchasing OPTEX
Transmitter SC-T4.
All of this instruction manual must be read before
operation of the Transmitter SC-T4, for safe and
proper operation.

This instruction manual should be kept for future
reference such as maintenance.

Transmitter

Instruction Manual

0

Please thoroughly read the "For safe use" before using the SC-T4

properly.

Because these precautions are related to failure or malfunction,

observe the precautions for use without fail.

In order to use the SC-T4 properly,
observe the following precautions.

Precautions which are the cause of failure:

The SC-T4 is used exclusively to SS Checker (Detector).
Accordingly, do not connect other equipment.

●Precautions which are the cause of failure

●Precautions related to measurement

・Do not disassemble or modify the

Transmitter. Disassembly or
modification may cause fire or an
electric shock because there are high­voltage parts inside the Transmitter.

・Turn off the Power immediately in the

unlikely event that there occur any
abnormalities such as smoke or
abnormal noise. Otherwise it may
cause fire or an electric shock.

[

Be sure to read this instruction manual in order

to use the Transmitter SC-T4 properly.]

1

For safe use

" " denotes "Prohibited action", and " " denotes "Required action".

Power (OFF

)

1

2 3

・Be sure to use the power supply of

100 to 240 VAC.
Otherwise it may cause fire or
electric shock.

・Do not wipe the Transmitter with

solvent. It may cause failure.

・To clean the Transmitter, first wipe

away lightly with a clean soft cloth
damped by diluted mild detergent
solution and then wipe off moisture
with a dry clean soft cloth.

100 to 240 VAC

Organic
Solvent

Thinner

etc.

・There are high

voltage parts inside
the Transmitter.
Failure to observe
this precaution may
cause fire or an
electric shock.

・Do not give a strong shock to the

Transmitter.

・Do not press the CLEAN button, while

the SS Checker (Detector) is in the air.

・Make sure that the Cover is locked

without fail. Otherwise, protective
structure may not function adequately.

Keep the Power off during
installation and wiring operations.

Precautions which are the cause of failure:

" " denotes "Prohibited action", and " " denotes "Required action".

・Use Cable Clamps attached to the

transmitter for wiring. When the piping
are directly connected with the
transmitter, take a corrective action
such as caulking against intrusion of
gas because corrosive gas is in danger
of intruding through the piping, etc. into
the Transmitter.

・Do not bind the signal output cable with

the power cable or do not put them in
the one Cable Clamp.

・Install the transmitter

with attached
Mounting Bracket.

・Install the transmitter at a place

ventilating well and avoiding direct
sunlight.

4 5

Minus Indicator

Signal Output Response Time Indicator

During Signal Output Response Time setting: Blinking

SPAN Indicator

During Span Adjustment: Blinking
During Signal Output (4mA) Adjustment: On
During Signal Output (20mA) Adjustment: Blinking

ZERO Indicator

During ZERO Adjustment: Blinking
During Signal Output (4mA) Adjustment: Blinking
During Signal Output (20mA) Adjustment: On

Transmitter

Operation panel

Display

2

External Features

Cover

Cable Clamps

Key Hook

Lock Lever

Power SwitchCircuit Breakers

Terminal Block

Operation Buttons

Display

Terminal Cover

Alarm Level Indicator (Green)
Alarm Timer Indicator (Green)
Warning Indicator (Red

)

How to open the Cover

How to close the Cover

・Make sure that the Cover is locked without fail. Otherwise, protective structure may

not function adequately.

Cover Opening & Closing Procedure

1. Slide up the Lock Lever.

2. Pull the Cover.

1. Close the Cover securely.

2. Slide down the Lock Lever
until it stops.

CAUTION:

6 7

3

Installation

Fit the Mounting Bracket attached to the
Transmitter with the Fitting Screws.

1

Install the Mounting Bracket on the wall
and so forth. For mounting pitch, refer
to the Fig. to the right.

Installation1

125mm

186mm

(

Mounting Hole Φ9

)

・ Install the Transmitter at a place ventilating well and avoiding direct sunlight.
・ Install the Transmitter with Mounting Bracket.
・ Close the Cover securely after installation is completed.

CAUTION:

・If there is a projection on the mounting surface, separate

40 mm or more from the upper Mounting Holes of the
Mounting Bracket (See Fig. to the right).

40 mm or more from the
center of the upper
mounting holes

CAUTION:

2

・ Make sure that the Circuit Breaker is normal

(

OFF) position (Refer to

[8]

Troubleshooting).

Wiring

① 〜 ⑳・ Compatible cable diameter with the Cable Clamps is 6 〜 8 mm.
① 〜 ⑦・ Use a shielded cable with nominal sectional area of 0.2 〜 1.25 mm

2

for the

Detector Cable.

・ For extension of the Detector Cable, refer to

[3]

Detector Cable Extension. Use

a device such as a Pull-box if necessary.

⑨ 〜 ⑩ ・ Use a shielded cable with nominal sectional area of 0.75 to 1.25 mm

2

for a

Signal Output Cable.

・ For connection to the Signal Output terminal, load resistance should be 300 Ω

Max (including wiring resistance).

⑪ 〜 ⑯ ・ For connection to the Self Checking Relay Output terminal and Alarm Relay

Output terminal, load resistance should be 240 VAC and 1A Max.

Although a protective circuit is built in to prevent from overcurrent due to

thunderbolt, it is recommended to use fuses with rated current of 2A Max for the
purpose of improvement of safety.

⑱

 ・ Carry out grounding work.

⑲ 〜 ⑳ ・ Use a cross-linked polyethylene insulating vinyl sheath cable

with nominal

sectional area of 0.75 to 1.25 mm

2

for the power cable.

2

・Keep the Power off during wiring operations. Otherwise it may cause fire or an

electric shock.

・Wire the Power Cable, at the end of wiring operation.

CAUTION:

1

2 3 456 7 8910 11 121314 15 161718 19 20

F.G.

Spare

Spare

CalibrationSignalOutput

AlarmRelay

AlarmRelay

AlarmRelay

SelfChekingRelay

SelfChekingRelay

SelfChekingRelay

SelfCheckingInput

AnalogSignalInput

AnalogSignalOutput

AnalogSignalOutput

AnalogSignalInput

PowerSupply

PowerSupply

12VPowerSupply

12VGround

ShieldLine

(Blue)(Brown)(Black)(White)(Green)(Red)

COM NCNOCOM NCNO

−

＋− ＋− ＋

ControlPanel

etc.

Detector

AC100240V

50/60Hz

Recorder

etc.

SelfChecking

RelayOutput

Alarm

RelayOutput

4‑20mA

〜

Controller Terminal Block

Reference:

・When the Detector is in the air, analog

(

4-20mA) signal output becomes

approximately 6mA,