Dwyer SCD-LED User Manual

Ratio of output 1 & output 2

area

SCD Accessory: SCD-LED

Instruction Sheet

Thank you very much for choosing SCD-LED. Please read this instruction sheet before using your SCD-LED to ensure proper operation. Keep this instruction sheet handy for quick reference.

1. Please hold the plastic terminal when installing SCD-LED to prevent electrostatic discharge (ESD).

2. Prevent dust or metallic debris from falling into the device and cause malfunction. DO NOT

or uninstall SCD-LED without being permitted. DO NOT

3. When installing SCD-LED, please make sure the power of SCD main unit is switched off and insert

SCD-LED into the correct slot on SCD main unit.

4. Make sure you install SCD-LED correctly before switching on the power; otherwise serious damage

may occur.

5. DO NOT

may occur.

touch the terminals or repair the device when the power is on; otherwise an electric shock

Product Outline & Dimension

Input power DC +5V

Power consumption Max. 0.5W

Display

Single row 7-segment LED display, two 4 bits PV: red SV: green

Keys 4 keys for selecting, changing pages and tuning

Terminal connection Can only be inserted into the “Display and Setup Unit” slot on SCD main unit

Switching modes: SCD-LED is in ”operation mode” when the power is switched on, Press to enter

“regulation mode”. Press

for more than 3 seconds in the operation mode to enter “initial setting

mode”. Press in the regulation mode or initial setting mode to return to the operation mode.

PV/SV: Displaying the present value and set value. Use

How to set up: Use

in the three modes to select the parameter to be set up and to

modify the settings. Press to save the setting.

How to switch modes by keys and set up parameters:

Regulation Mode Operation Mode Initial Setting Mode

Select channel

Press

(Set it up when in PID control and RUN)

Press

Auto-tuning

Use temperature (SV)

Press

Precaution

use empty terminals.

Electrical Specifications

Setting up Parameters

to change the set value.

to set up target

Control loop RUN/STOP

Set up input type

Press

Set up temperature unit

modify

Regulation Mode Operation Mode Initial Setting Mode

PID proportional band

(Set it up when in PID control)

Press

Set up PID Ti value

(Set it up when in PID control)

Press

Set up PID Td value

(Set it up when in PID control)

Press

or Set up PD/PID control offset (When in PID control, set up PdoF

when Ti=0. AT sets up ioF automatically when Ti≠0.)

Press

Hysteresis for output 1 (Set it up when in ON/OFF control)

Press

Hysteresis for output 2

(Set it up when in ON/OFF control)

Press

Control cycle for output 1 (Set it up when in PID/programmable

PID/manual control)

Press

(Set it up when in PID/programmable PID/manual control)

Press

Control cycle for output 2

when in dual output control. Pb2 = Pb1 × COEF (Set it up when in PID/programmable

PID + dual output)

Press

Set up the overlapped

for dual output (dead band) (Set it up when in dual output)

Press

For tuning temperature

offset

Press

Set up upper limit for

control output

Press

Set up lower limit for

control output

Press

Set up start pattern

(Set it up when in PID control)

Press

Set up start step

(Set it up when in PID program control)

Press

Set up the position of

decimal point

for thermocouple R, S, B type)

(Not

Press

Without/with group INB Set up upper limit of Alarm 1

Press

Without/with group INB Set up lower limit of Alarm 1

Press

Without group INB

Set up upper limit of Alarm 2

Press

Set up lower limit of Alarm 2

Press

panel

Press

the value of output 1 (Displayed when in

PID/programmable PID/manual control RUN)

Press

the value of output 2 (Displayed when in

PID/programmable PID/manual control RUN)

Press temperature”

Without group INB

For locking the keys on the

For displaying and tuning

Z Return to “target

Set up upper limit of

temperature

Press

Set up lower limit of

temperature

Press

Select control mode

Press

Set up output 1

(Heating, cooling or proportional output)

Press

Set up output 2

(Heating, cooling or alarm output)

Press

Without/with group INB Set up Alarm 1 mode

Press

Without group INB

Set up Alarm 2 mode

Press

Set up copy function

Press

Select ASCII/RTU communication format

Press

Set up communication

address

Press

Set up communication

baud rate

Press

Set up data length

Press

Set up parity bit

Press

Regulation Mode Operation Mode Initial Setting Mode

Set up delay time for alarm

output

Press

For tuning upper limit of

analog output (Displayed when in analog output)

Press

For tuning lower limit of

analog output (Displayed when in analog output)

Press

Set up positive/negative

proportional output (Set it up when in proportional output

control)

Z Return to

Press “auto-tuning”

Types of Input Sensors & Temperature Range

Press input type”

Set up stop bit

Z Return to “set up

1. Set up input sensor: Enter parameter (see “Setting up Parameters” section for details) in

“initial setting mode” and select an input sensor (see Table 1).

2. Set up temperature range: Enter parameter

and (see “Setting up Parameters”

section for details) in “initial setting mode” to set up the temperature range.

3. Set up the position of decimal point: Enter parameter

(see “Setting up Parameters” section

for details) in “operation mode”. The position of decimal point will change the temperature range.

The screen displays only 4 digits; therefore, you have to set “0” in this parameter if you wish to

display values bigger than 999 or smaller than -99. The setting will not be saved. Default = 1.

Input Sensor Type Display Range

Platinum resistance (Cu50)

Platinum resistance (Ni120)

Platinum resistance (Pt100)

Platinum resistance (JPt100)

Thermocouple TXK type

Thermocouple U type

Thermocouple L type

Thermocouple B type

Thermocouple S type

Thermocouple R type

Thermocouple N type

Thermocouple E type

Thermocouple T type

Thermocouple J type

Thermocouple K type

Setting up Control Output

Table 1

-50 ~ 150°C

-80 ~ 300°C

-200 ~ 850°C

-20 ~ 400°C

-200 ~ 800°C

-200 ~ 500°C

-200 ~ 850°C

100 ~ 1,800°C

0 ~ 1,700°C

-200 ~ 1,300°C

0 ~ 600°C

-200 ~ 400°C

-100 ~ 1,200°C

-200 ~ 1,300°C

For PID Control Application:

1. Set up 2 outputs:

Parameters” section for details). Set up one of the two parameters as

Enter parameter and in “initial setting mode” (see “Setting up

or of control

output.

2. Set up control type:

section for details) and set it up as

3. Set up parameters:

 Parameter

Enter parameter in “initial setting mode” (see “Setting up Parameters”

(PID) control.

In “regulation mode”

：Can be set up when parameter is set as . When is set

, the program will calculate parameters , , , and

automatically and save them.

 Parameter

, and .

 Parameter and ： can be set up when parameter is set as “0”.

OFF

AL-H

OFF

AL-H

OFF

AL-H

AL-L

AL-H

OFF

AL-L

OFF

AL-H

can be set up when

is not “0”.

 Parameter and ： (control cycle for output 1) can be set up when parameter

is set as (heating) or (cooling) output. (control cycle for output 2)

can be set up when parameter

is set as (heating) or (cooling) output.

 Parameter and ：Can be set up when parameter and are set as

(heating) or (cooling) output. (The settings in and have to be

different.)

For ON/OFF Control Application:

1. Set up 2 outputs:

Enter parameter and in “initial setting mode” (see “Setting up

Parameters” section for details). Set up one of the two parameters as or of control

output.

2. Set up control type:

Enter parameter in “initial setting mode” (see “Setting up Parameters”

section for details) and set it up as (ON/OFF) control.

3. Set up parameters:

 Parameters

In “regulation mode”

and ： (hysteresis for output 1) can be set up when parameter

is set as (heating) (cooling) output. (hysteresis for output 2) can be

set up when parameter

only set up

when and are set as or at the same time.

is set as (heating) or (cooling) output. You can

 Parameter ：Can be set up when parameter and are set as control output,

and the settings in

2 is

(cooling).

and are different, e.g. output 1 is (heating), and output

For Manual Control Application:

1. Set up 2 outputs:

Parameters” section for details). Set up one of the two parameters as

Enter parameter and in “initial setting mode” (see “Setting up

or of control

output.

2. Set up control type:

section for details) and set it up as

3. Set up parameters:

Enter parameter in “initial setting mode” (see “Setting up Parameters”

(manual) control.

In “regulation mode”

 Parameter and ： (control cycle for output 1) can be set up when parameter

is set as (heating) or (cooling) output. (control cycle for output 2)

can be set up when parameter

is set as (heating) or (cooling) output.

 Parameter and (in “operation mode”)： can be set up when parameter

is set as (heating) or (cooling) output. can be set up when

parameter

is set as (heating) or (cooling) output.

For Programmable PID Application:

1. Set up 2 outputs:

Parameters” section for details). Set up one of the two parameters as

Enter parameter and in “initial setting mode” (see “Setting up

or of control

output.

2. Set up control type:

section for details) and set it up as

3. Set up parameters:

Enter parameter in “initial setting mode” (see “Setting up Parameters”

(programmable) control.

In “regulation mode”

 Parameter , and .

 Parameter

： can be set up when parameter is set as “0”.

and ： (control cycle for output 1) can be set up when parameter

is set as (heating) or (cooling) output. (control cycle for output 2)

can be set up when parameter

 Parameter

and ：Can be set up when parameter and are set as

is set as (heating) or (cooling) output.

(heating) or (cooling) output. (The settings in and have to be

different.)

 Parameter

and (in “operation mode")：Can be set up when parameter is

set as or .

For Proportional Output Application: In this application, output 1 has to be analog output.

1. Set up output function:

section for details) and set it as

Enter parameter in “initial setting mode” (see “Setting up Parameters”

(proportional) output.

2. Set up parameters: In “regulation mode”

 Parameter

For Upper/Lower Limits of Control Output:

1. Set up upper limit:

Enter parameter in “regulation mode” (see “Setting up Parameters”

section for details). Range: Lower limit ~ 100%.

2. Set up lower limit:

Enter parameter in “regulation mode” (see “Setting up Parameters”

section for details). Range: 0 ~ upper limit %.

For Alarm Application:

1. Set up output function (only when there is group INB):

Enter parameter in “initial setting

mode” (see “Setting up Parameters” section for details) and set it as

2. Set up alarm type:

Enter parameter (with INB) or and (without INB) in “initial

(alarm) output.

setting mode”. See Table 2 for more details on the alarm output.

3. Set up parameters:

 Parameter

In “operation mode”

and ：Can be set up when there is group INB.

 Parameter , , and ：Can be set up when there is no group INB.

4. Set up delay alarm output:

Enter parameter in “regulation mode” (unit: second). The alarm

will be enabled only when the temperature reaches the alarm output condition, and the condition

remains until the delay time is reached.

SCD main unit offers 2 groups of alarm output, each with 12 alarm modes in the initial setting mode.

When SV is higher or lower than SV, the alarm output will be enabled. See the table in the next column

for the explanations on the 12 alarm output modes.

Note: AL-H and AL-L include AL1H, AL2H and AL1L, AL2L.

0 No alarm OFF

Alarm output is enabled when the temperature reaches upper

and lower limits: The alarm will be enabled when PV exceeds

SV + AL-H or falls below SV – A L-L.

Alarm output will be enabled when the temperature reaches the

upper limit: The alarm will be enabled when PV exceeds SV +

AL-H.

Alarm output will be enabled when the temperature reaches the

lower limit: The alarm will be enabled when PV falls below SV –

A L-L.

Alarm output will be enabled when PV is between SV + AL-H

and SV – AL-L.

Alarm output will be enabled when the temperature reaches the

absolute value of the upper and lower limits: The alarm will be

enabled when PV exceeds AL-H or falls below AL-L.

Alarm output will be enabled when the temperature reaches the

absolute value of the upper limit: The alarm will be enabled

when PV exceeds AL-H.

Alarm output will be enabled when the temperature reaches the

absolute value of the lower limit: The alarm will be enabled when

PV falls below AL-L.

Upper/lower limit standby alarm: The alarm will be enabled when

PV reaches SV and further exceeds SV + AL-H or falls below

SV – AL –L.

Upper limit standby alarm: The alarm will be enabled when PV

reaches SV and further exceeds SV + AL-H.

Lower limit standby alarm: The alarm will be enabled when PV

reaches SV and further falls below SV – AL-L.

Upper limit hysteresis alarm: The alarm will be enabled when PV

exceeds SV + AL-H. The alarm will be disabled when PV falls

below SV.

Lower limit hysteresis alarm: The alarm will be enabled when PV

falls below SV – AL-L. The alarm will be disabled when PV

exceeds SV.

1. Set up communication: Enter parameter , , , , and

in “initial setting mode” (see “Setting up Parameters” section for details) and select your desired

communication settings.

2. SCD series temperature controller is able to set up or read communication settings through

SCD-LED.

1. Select channel: Enter parameter in “regulation mode” (see “Setting up Parameters” section

for details) and select the channel to be monitored.

2. How does it work:

SCD main unit has maximum 8 channels which can be connected to 8 input

sensors at the same time. The 8 input channels belong to group INA and INB, each group with 4

input channels. INB is optional accessory; therefore if INB is not inserted in SCD, SCD will only

show 4 channels.

1. Set up the function: Enter parameter in “initial setting mode” (see “Setting up Parameters”

Alarm Mode Alarm Output Operation

OFF

AL-L SV AL-H

OFF

AL-L

AL-L SV

OFF

AL-L

OFF

AL-L

OFF

AL-L SV

AL-H

SV AL-H

Tabl e 2

Setting up Communication

Setting up Channel

Setting up Copy Function

section for details) and select the function you desire.

2. How does it work:

The copy function allows a SCD main unit to copy its parameters (including the

values set in the parameter and communication settings) to another SCD main unit through

SCD-LED. Follow the steps below:

a. Insert SCD-LED into the SCD main unit to be copied. Enter parameter

in “initial setting

mode” and select , and SCD-LED will read the parameters in the SCD main unit. Next,

you will see

copy fails. Press

on the screen, indicating that the copy is successful. indicates the

to return to “operation mode” and you will see the present temperature

value (PV) and set temperature value (SV).

b. Switch off SCD and withdraw SCD-LED. Insert SCD-LED into another SCD main unit. Enter

parameter

in “initial setting mode” and select . SCD-LED will write the

parameters into it. Next, you will see on the screen, indicating that the writing-in is

successful.

you will see the present temperature value (PV) and set temperature value (SV).

indicates the writing-in fails. Press to return to “operation mode” and

Locking the Keys on Panel

1. Lock the keys: Enter parameter in “operation mode” (see “Setting up Parameters” section

for details) and select the function you desire.

2. How does it work:

indicates locking all the keys on the panel. indicates that you can

only modify the set temperature value (SV), and all other functions are locked.

3. Press and at the same time to unlock the keys.

1. Set up analog output tuning: Enter parameter and in “regulation mode” (see

Analog Output & Temperature Tuning

“Setting up Parameters” section for details) and tune the parameter to the desired output value.

2. Temperature offset tuning:

Enter parameter in “regulation mode” and tune the parameter to

the displayed temperature value.

3. How does it work:

a. Tuning analog output: For example, if you would like to have accurate 4 ~ 20mA of output, you

can set up output 0% by manual control, connect the output to ampere meter and tune

parameter

making the meter point to 4mA. Next, set up output 100% by manual control

and tune parameter making the meter point to 20mA.

b. Tuning temperature offset: This allows the displayed temperature to plus or minus 1 offset value.

Error Message

Error PV SV

Input sensor not connected

Internal communication error

Output error

Input error

Storage error

Channel disabled

Channel being initialized

How to Install

1 Remove all the terminal blocks on the panel.

2 Uncover the panel and insert SCD-LED to the

“operation interface” slot.

3 Cover up the panel.

4 Insert the terminal blocks back to their

positions.