Lutron Electronics CT-2012 User manual

4-20 mA

Controller/Alarm

Indicator

Model : CT-2012

Your purchase of this 4 to 20 mA CONTROLLER marks a

step forward for you into the field of precision

measurement. Although this METER is a complex and

delicate instrument, its durable structure will allow many

years of use if proper operating techniques are

developed. Please read the following instructions

carefully and always keep this manual within easy reach.

OPERATION MANUAL

Caution Symbol

Caution :

* Risk of electric shock !

Caution :

* Do not use fingers or any tool

to touch the Wire Terminals.

* Do not apply the relay contact load

current > 0.5 Amp.

* The instrument contains no user

serviceable parts and should not

be opened by the user.

* Repair or after service should be

done by a qualified technician only.

* Power supply should apply the

correct ACV power voltage

* Cleaning - Only use the dry cloth to

clean the plastic case !

* Equipment protected throughout

by Double Insulation or Reinforced

Insulation.

Environmental Condition

* Comply with EN61010.

Transient over voltage at Mains Supply 2500V.

* Pollution Degree 2.

* Altitude up to 2000 meters.

* Indoor use.

* Relative humidity 80% max.

TABLE OF CONTENTS

1. FEATURES.........................................................................

2. SPECIFICATIONS..................................................................

3. FRONT PANEL DESCRIPTION............................................

3-1 Display....................................................................

3-2 PV ( process value ) indicator............................................

3-3 SV ( set value ) indicator............................................

3-4 Set Button..............................................................

3-5 Button..............................................................▼

3-6 Button.............................................................▲5

3-7 Control relay indicator........................................... 5

3-8 Alarm relay indicator............................................ 5

3-9 Wire terminals.................................................... 5

3-10 Case holder ....................................................... 5

3-11 RS232 terminal................................................... 5

4. MEASURING PROCEDURE .......................................... 6

4-1 Terminal connection.................................................

4-2 1st layer setting procedures......................................

a. Control Low limit value setting.............................. 7

b. Control High limit value setting............................ 7

Alarm Low limit value setting...................................

Alarm High limit value setting...................................

4-3 2nd layer setting procedures......................................

Point position setting...............................................

b. 4 mA value setting............................................... 9

20 mA value setting................................................

Digital filter value setting..........................................

Control hysteresis value setting...............................

Alarm hysteresis value setting.................................

Offset value adjustment...........................................

Gain value setting...................................................

RS232 output unit code setting..................................

5.. RS232 PC SERIAL INTERFACE.....................................................

6. SYSTEM RESET......................................................... 17

7. THE ADDRESS OF AFTER SERVICE CENTER......................

1. FEATURES

* Input : 4-20 mA DC, linear.

* User can default the desired display value between

-1999 to 9999 ( decimal point can be selected to DP1,

DP2, DP3 ) and all the preset data will be saved into

the memory circuit permanently.

* According the 4 to 20 mA input signal, user can preset

the desire display value between -1999 to 9999 ( decimal

point can select to DP1, DP2, DP3 ). Until set the display

value, all the data will save into the memory circuit

permanently

* When CT-2012 cooperate LUTRON's 4 to 20 mA

transmitters ( or any other transmitters if it build 4 to

20 mA output signal ), whole system will become the

high performance Controller/Alarm/Indicator for

following measuring functions : Humidity, Light, pH,

Dissolved Oxygen, Conductivity, Vibration, Pressure,

Sound, Temperature, RPM, Hz, Load cell ( Weight,

Force ), Potential ( Angle, Level ). ACV, ACA, DCV,

DCA, WATT....

* Easy to adjust the function factors by push button

on the front panel.

* Control output : 2 points ( COM, NO ).

* Alarm output : 2 points ( COM, NO ).

* Control Relay will make action when the reading value

reach to control value.

* Hysteresis value setting for control and alarm function.

* Large red LED display, high brightness and easy to read.

* Microprocessor circuit ensures high accuracy and

provides special functions and features.

* DC 12V power supply output.

* RS232/USB computer interface.

* Power : 90 ACV - 264 ACV, 50/60 Hz.

* Standard 96 X 48 mm DIN case.

* Optional data acquisition software.

2. SPECIFICATIONS

Display * 4 digits red LED,

14 mm ( 0.55 inch ) digit height

* 4 indicators :

PV ( process value ) indicator

SV ( set value ) indicator

Control out indicator

Alarm out indicator

* According the 4-20 mA input signal,

user can preset the desire display value

between -1999 to 9999 ( decimal point

can select to DP1, DP2, DP3 ). Until set

the display value, all the data will save

into the memory circuit permanently

Input Signal Linear, 4 to 20 mA

Circuit Custom chip of microprocessor LSI

circuit.

Sampling Time Approx. 1 second.

Relay Output Number 2 relays

Function

Relay 1 :

High/Low control relay.

Relay 2 :

High/Low alarm relay.

Max load 0.5 ACA/250 ACV

0.5 DCA/24 DCV

Do not apply the relay

contact load current

> 0.5 A, other wise the

relay may be damaged

permanently without

warranty.

* Decimal point adjustment :

DP1, DP2, DP3

Main * Low limit of range adjustment

Internal 4 mA = X X X X, min. value is -1999

Function * High limit of range adjustment

Selection 20 mA = X X X X, max. value is 9999

* Alarm value adjustment :

High Alarm or Low alarm.

* Control value adjustment

High control or Low control.

* Control hysteresis value setting.

* Alarm hysteresis value setting.

* Filter value of display reading

* Offset adjustment.

* Gain adjustment.

* RS232 output unit code setting

Default of internal function :

Without advice previously, the function

of CT-2012 will preset :

* 4 mA = 0, 20 mA = 9999.

* High control mode.

* High alarm mode.

* RS232 output unit code = 0 ( no unit ).

Front Panel * Control set-point value adjustment.

Function * Measuring value ( Process value )

Selection offset. Use to offset the PV indication

from the actual PV.

* Alarm set-point value adjustment.

External DC 12 V, 50 mA max.

Power Supply

Data Output RS 232 PC serial interface.

Operating 0 to 50 .℃

Temperature

Operating Less than 80% R.H.

Humidity

Power Supply 90 to 260 ACV, 50/60 Hz.

Power Approx. 3.5 VA/AC 110V.

Consumption Approx. 4.9 VA/AC 220V.

Weight 384 g/ 0.84 LB.

Dimension DIN size : 96 x 48 mm.

Panel cut size : 92 mm x 46 mm.

Depth : 110 mm.

Accessories

Instruction manual..............................

1 PC

Included

Case holder with screw..............................

2 PCs

Optional * Data Acquisition software,

Accessories SW-U801-WIN.

* RS232 cable, UPCB-02.

* USB cable, USB-01.

3. FRONT PANEL DESCRIPTION

Fig. 1

3-1 Display

3-2 PV ( process value ) indicator

3-3 SV ( set value ) indicator

3-4 Set Button

3-5 Button▼

3-6 Button▲

3-7 Control relay indicator

3-8 Alarm relay indicator

3-9 Wire terminals

3-10 Case holder

3-11 RS232 terminal

4. MEASURING PROCEDURE

4-1 Terminal connection

1)Input the ACV power ( 90 to 260 ACV ) to T1, T2.

Do not input the

over voltage to the

AC input terminals.

2)Connect the " Control Relay " output from T3, T4.

Connect the " Alarm Relay " output from T5, T6.

3)Connect the input signal ( 4 to 20 mA DC ) to

to the input terminal T15 (+), T16 (-).

4)T7 (+), T8 ( - ) are DC 12 V power supply terminal.

If the measured installation ( transmitters ) need the

the external DC 12V power supply, can connect its

power supply from T7, T8.

4-2 1st layer setting procedures

CtLo Control Low limit value setting

CtHi Control High limit value setting

ALLo Alarm Low limit value setting

ALHi Alarm High limit value setting

a. Control Low limit value setting

1)Press the " Set Button " ( 3-4, Fig. 1 ) once, the

" Display " will show " CtLo ", now the meter is ready

for the " Control Low limit value " setting.

2)Use the " Button " ( 3-5, Fig. 1 ) and the " ▼ ▲

Button " ( 3-6, Fig. 1 ) to adjust the desiring " Control

Low limit value ", press the " Set Button " ( 3-4, Fig. 1 )

to save the setting value.

Remark :

*During adjust the value, the " SV indicator " ( 3-3, Fig. 1 )

will light.

*The function of " Control Low limit value " setting, refer to

page 11, Fig. 3.

b. Control High limit value setting

1)After finish above " Control Low limit value setting ",

press the " Set Button " ( 3-4, Fig. 1 ) once, the

" Display " will show " CtHi ", now the meter is ready

for the " Control High limit value " setting.

2)Use the " Button " ( 3-5, Fig. 1 ) and the " ▼ ▲

Button " ( 3-6, Fig. 1 ) to adjust the desiring " Control

High limit value ", press the " Set Button " ( 3-4, Fig. 1 )

to save the setting value.

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