Optex SC-U1 User manual

Universal Transmitter
SC-U1(E)
Operation Manual
Thank you very much for purchasing the Universal Transmitter SC-U1.
All of this instruction manual must be read before operation of the Universal
Transmitter SC-U1 for safe and proper operation.
This instruction manual should be kept for future reference such as maintenance.
The instruction manual is also available on the following website.
https://navi.optex.net/manual/05324

2
Features (what this product can do)
Two sensors can be installed.
OutputInput
4-20 mA output
The measurement value can be
output at 4-20 mA.
2 channels can be output.
Relay output
The alarm level can be set and the
contact output can be activated
when the measurement value
exceeds the trigger.
The relay output can be assigned
to Self Checking and maintenance
output as well.
4 channels can be output.
This Universal Transmitter SC-U1 is a signal converter that displays the measurement
value of the sensor, converts the sensor signal into an analog signal and outputs it to an
external recorder, or outputs a relay contact signal to an external control panel when the
sensor signal exceeds the alarm trigger.

3
Option
Measurement values can be uploaded to a cloud server by wireless
communication.
Measurement values can be monitored from a remote place.
Notifications can be sent by e-mail for error and maintenance information.
The number of sensors that can be input,
the 4-20 mA output that can be output, and
the number of relay output channels can be
increased.
The number of channels shown in the table is the maximum number
that can be installed.
Configuration Sensor 4-20 mA output Relay output
SC-U1 only 2 channels 2 channels 4 channels
SC-U1 and
SC-U-EB 4 channels 4 channels 8 channels
Up to 2 more sensors can
be installed.
4-20 mA output
Up to 2 more channels can
be installed.
Relay output
Up to 4 more channels can
be installed.
Sensor Input Expansion/
Output Expansion Board SC-U-EB
Gateway

4
List of contents
SC-U1 main unit: 1 Transmitter mounting bracket: 1
Power supply
Y terminal (M3): 2
Grounding
Y terminal (M4): 1
Cover fixing screw
and nut (M5): 1
Transmitter mounting screw
(M5 x 10): 2
Universal Transmitter
SC-U1(E)
Operation Manual
Thank you for purchasing Universal Transmitter SC-U1.
All of this instruction manual must be read before operation of the Universal
Transmitter SC-U1 for safe and proper operation.
This instruction manual should be kept for future reference such as maintenance.
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Operation manual (this document): 1 Installation manual : 1
Instruction Manual
If there are any missing or faulty items, please contact our sales representative.

5
Items referred to
The settings and operations differ depending on the sensor you installed.
For details, Refer to each sensor’s instruction manual.
Table of Contents
1 For Safe Use ....................................................................................................... 8
2 Component Name............................................................................................. 10
Front view...................................................................................................... 10
Inside the cover............................................................................................. 11
◆How to open/close cover........................................................................ 12
Operation button............................................................................................ 13
Display........................................................................................................... 14
◆Indication when more than one sensor is installed ................................ 14
◆Status bar details.................................................................................... 15
3 Operations on first boot/starting a task ......................................................... 16
Startup flow ................................................................................................... 16
◆On first boot............................................................................................ 16
◆Unlock passcode ................................................................................... 18
4 Available Operations for SC-U1 ...................................................................... 19
5 Setting Menu ......................................................................................... 20
5.1 Sensor Setting........................................................................................... 20
Sensor setting ............................................................................................... 20
◆Display Item............................................................................................ 22
◆Response Time....................................................................................... 25
5.2 GW (Gateway) Setting............................................................................... 26
Basic setting.................................................................................................. 27
◆Time Zone............................................................................................... 27
Send channel setting..................................................................................... 28
5.3 4-20 mA Setting ......................................................................................... 30
4-20 mA setting (4-20 mA output item setting).............................................. 32
◆Output Item Select.................................................................................. 32
◆Signal output range lower limit ............................................................... 33
◆Signal output range upper limit .............................................................. 34
4-20 mA output setting (fine adjustment for 4-20 mA output)........................ 35
◆4 mA Fine adjustment............................................................................. 35
◆20 mA Fine adjustment........................................................................... 36
4-20 mA test mode........................................................................................ 37

6
Items referred to
The settings and operations differ depending on the sensor you installed.
For details, Refer to each sensor’s instruction manual.
5.4 Relay Setting.............................................................................................. 38
Relay setting.................................................................................................. 40
◆Alarm output setting ............................................................................... 40
●Trigger ................................................................................................. 42
●Active Level ......................................................................................... 42
●Hysteresis............................................................................................ 43
●On Delay (alarm timer) ........................................................................ 44
●Off Delay (cancel timer)....................................................................... 45
◆Maintenance output setting.................................................................... 46
◆Cleaning output setting .......................................................................... 47
◆Self Checking output setting .................................................................. 48
Relay test mode ............................................................................................ 49
5.5 Main Unit Setting....................................................................................... 50
Date setting ................................................................................................... 51
Passcode lock ............................................................................................... 52
◆Passcode lock setting ............................................................................ 52
◆Passcode................................................................................................ 53
◆Auto lock................................................................................................. 54
LCD setting.................................................................................................... 55
◆Contrast setting ...................................................................................... 55
◆Backlight setting..................................................................................... 56
◆Backlight Timer....................................................................................... 57
Language ...................................................................................................... 58
Information .................................................................................................... 58
Initialization (Restore to factory default setting) ............................................ 59
Buzzer Setting............................................................................................... 59
6 Calibration ............................................................................................. 60
Calibration ..................................................................................................... 60
◆Example: Zero calibration using turbidity checker................................. 60
◆Initialize Calibration Value....................................................................... 62
7 Adjustment ........................................................................................... 63
Adjustment .................................................................................................... 63
◆Example: Offset adjustment using turbidity checker.............................. 65

7
8 Maintenance Setting ............................................................................ 66
Maintenance.................................................................................................. 66
◆Measurement value hold ........................................................................ 67
●Performing measurement value hold .................................................. 67
●Canceling measurement value hold.................................................... 68
◆Hold Timer .............................................................................................. 69
◆Maintenance Timer................................................................................. 70
●Setting maintenance timer................................................................... 70
●Canceling maintenance notification .................................................... 72
9 Cleaning ............................................................................................... 73
Cleaning ........................................................................................................ 73
◆Manual Cleaning .................................................................................... 74
◆Cleaning Interval .................................................................................... 75
◆Cleaning Interval (Relay) ........................................................................ 76
◆Cleaning Activation ................................................................................ 77
◆Post-cleaning Standby ........................................................................... 78
10 Firmware Update .............................................................................................. 79
11 Troubleshooting ............................................................................................... 80
Error Display.................................................................................................. 80
Error codes.................................................................................................... 82
◆Error code list ......................................................................................... 82
◆M5xx error code list................................................................................ 83
When in trouble ............................................................................................. 84
12 Maintenance...................................................................................................... 89
Maintenance (Monthly).................................................................................. 89
Periodic Inspection (Every 3 Months)............................................................ 89
Long-Term Storage ....................................................................................... 89
13 Specifications ................................................................................................... 90
14 External Dimensions........................................................................................ 91
Items referred to
The settings and operations differ depending on the sensor you installed.
For details, Refer to each sensor’s instruction manual.

8
Be sure to read this instruction manual in order to use the Universal
Transmitter SC-U1 properly.
• Please thoroughly read the "For Safe Use" before using the Universal Transmitter SC-U1
properly.
• Because these precautions are related to failure or malfunction, observe the precautions
for use without fail.
The SC-U1 is designed specifically for OPTEX sensors.
Do not connect any other equipment to the sensor input.
denotes "Prohibited action" and denotes "Required action".
1 For Safe Use
To prevent fire, electric shock, and/or failure
Be sure to use a power
supply of 100 to 240 VAC.
Using the product with an
AC voltage other than 100
to 240 VAC may cause fire
or electric shock.
Close the cover securely.
For how to close the cover, refer to “How to
open/close cover” P.12.
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
electric shock.
Keep the power off during
installation and wiring operations.
There are high voltage parts inside the
Transmitter. For installation and wiring, turn
off the power switch and disconnect the
power cable from the power supply source.
Failure to do so may result in fire or electric
shock.
OFF
Do not disassemble or modify
the Transmitter. The Transmitter
contains high voltage parts that may
cause the outbreak of fire or electric
shocks. Contact your dealer for
internal inspections, maintenance
and repairs.
Do not press when the sensor
with wiper is in air.
It may cause the sensor to malfunction.
When using a cleaning device other than
the one provided with the sensor, follow the
instruction manual of the cleaning device.

9
To acquire proper measurement values
Do not install in places exposed to
direct sunlight or poorly ventilated
areas.
Use the included transmitter
mounting bracket for installation.
Use the supplied cable gland for the
Transmitter. When connecting piping
directly to the Transmitter, take
measures to prevent corrosive gas
such as chlorine gas from entering
the Transmitter through piping.
Do not bind the signal output cable
and the power cable together or
place them in the same cable gland.
Do not touch electrical parts or the
board.
Remove the protective film from the
display before use.
Do not apply strong shock or
excessive force to the Transmitter.
To clean the Transmitter,
gently wipe it with
a clean, soft cloth
containing diluted
neutral detergent, and
then wipe off moisture
with a dry clean soft
cloth. Do not wipe with
an organic solvent. It
may cause failure.
Organic
solvent
Paint
thinner
It may cause failure.
Unit only suitable installed in control panel.

10
2 Component Name
Lock lever
Display
Operation panel
(cover)
Cover fixing
screw hole /
key hook
Cable gland
Front view