B&B Electronics CTA4100A-D User Manual

Timer/Counter/Tachometer

User Manual

CTA USER MANUAL

FORWORD

This user manual provides handy instructions for the operation of Delta CTA series. The detailed

operational instructions help the user to easily locate the functions they would like to acquire. In addition,

this user manual also helps sales and engineering staff to understand more about the advantages of Delta

CTA series and assist the users to operate CTA as well as getting familiar with its functions. The date of the

latest update is shown in the bottom left of the page.

CHAPTER ONE: BASIC INSTRUCTIONS

1.1 Features 4

1.2 Ordering Information

1.3 Specifications

1.4 Display, Indicators & Keys

1.5 Dimensions

1.6 Terminals Definition

1.7 Default Settings

1.8 Easy DIP Switch Setup

CHAPTER TWO: FUNCTIONS

2.1 Timer 9

2.2 Counter

2.3 Tachometer

2.4 Timer + Counter (Mixed Mode)

CHAPTER THREE: APPLICATIONS

3.1 On Cut-To-Length Machine 23

4

5

7

14

19

22

CTA USER MANUAL

OTES

N

How to use CTA correctly…

 To avoid misaction caused by interference, please make sure if you isolate the I/O wiring when I/O

wiring and power cable or high-voltage cable in the same wiring tube. If possible, use a separate tube

for the I/O wiring.

 Make sure that you place the sensor, other input devices, signal cables and CTA away from the

interference source.

 It will require 200ms after CTA is switched on for the activation of the internal power and default

value reset. CTA may not operate normally during this period of time.

CTA USER MANUAL

CTA4 00A

□

External power supply

CHAPTER ONE: BASIC INSTRUCTIONS

1.1 Features

Delta CTA series is the 3-in-1 timer, counter and tachometer with the following features:

 Can be a timer, counter, or tachometer and can operate in timer + counter mixed mode.

 Offers voltage input (PNP) or non-voltage input (NPN).

 The Pre-Scale function allows the input pulses to be displayed in their actual units.

 Counting speeds available: 1/30/200/1K/5K/10K cps. Maximum: 10K cps.

 The counting can be conducted in millisecond, second, minute, minute/second and

hour/minute/second.

 Output 1 contains relay output and transistor output. The two types of outputs can be enabled

concurrently.

 Offers total counting and batch counting.

 “Reset” and “Lock” keys for more convenient use.

 Offers 6-digit double-line LCD display.

 Offers easy DIP switch setup.

 Decimal point setup available.

1.2 Ordering Information

There are currently two model types available: CTA4000A and CTA4100A, only differentiating in the type of output 2.

1

2

5

4

3

CTA: Delta Timer/Counter/Tachometer A series

n Panel size 4: 48mm × 48mm

o Output 2 0: Transistor 1: Relay

p Preset stage 0: 2 preset stage

q Communication 0: None

\ Power supply A: AC100 ~ 240V

1.3 Specifications

Power input AC100 ~ 240V, 50/60Hz Input voltage range 85% to 110%, rated voltage Power consumption Less than 10VA

12Vdc ±10%, 100mA

Display Double-line, 6-digit LCD display

Input signal

Output 1

Output 2

Dielectric strength 2000Vac 50/60 Hz for 1 minute Vibration resistance Without damage: 10 ~ 55Hz, amplitude = 0.75mm, 3 axes for 2 hours Shock resistance Without damage: drop 4 times, 300m/s2, 3 edges, 6 surfaces and 1 corner Ambient temperature 0°C to +50°C Storage temperature -20°C to +65°C Altitude 2000m or less Ambient humidity 35% to 85% RH (non-condensing) Pollution degree Degree 2

Non-voltage input (NPN): ON impedance 1K ohm max. ON residual voltage: 2V max. Voltage input (PNP): High level: 4.5 to 30Vdc, Low level: 0 to 2Vdc Relay: SPST max.250Vac, 5A (resistance load) Transistor: NPN open collector. When 100mA /30Vdc, residual voltage = 1.5Vdc max. Relay: SPDT max.250Vac, 5A (resistance load) Transistor: NPN open collector. When 100mA /30Vdc, residual voltage = 1.5Vdc max.

CTA USER MANUAL

Tachometer function indicator

1.4 Display, Indicators & Keys

Reset 2 indicator

Reset 1 indicator

Key protect 2 indicator

Key protect 1 indicator

Output 2 indicator Output 1 indicator

Special function indicator

Lock key

Reset key

PV(Present Value) display

SV(Set Value) display

Timer function indicator

Counter function indicator

Mode and number shift key

PV: Red LCD SV and other display areas: Green LCD H M S: Time unit for the timer TOTAL: Total counting value BATCH: Batch counting value SET1 2: SV1 and SV2

1.5 Dimensions

Up/Down key

1.6 Terminal Definition

CTA combines the functions of timer, counter and tachometer; therefore, the definitions of input terminals in different modes are slightly different. CTA has 4 terminals ready for inputs. Take the pins

in counter mode for example, (see figure 1).

The output terminals are for OUT1 and OUT2. OUT1 has two outputs, transistor output and relay output, and the two outputs operate concurrently name. For CTA4000A, OUT2 only offers transistor output with inductive load protection diode (see figure 2). For CTA4100A, OUT2 only offers relay output (see figure 3).

12

13

8

7

are for CP1 (A phase), CP2 (B phase) RST1 and RST2 inputs

. The type of OUT2 is determined by the model

CTA4 series

NPN

PNP

CTA USER MANUAL

Counter Timer Tachometer Timer + Counter

CP1 CP1 CP1

CP2 Gate Gate Reset1 Reset1 Reset1 Reset1 Reset2 Start Start

Figure 1

Figure 2

Input connection:

Output load PIN connection:

Figure 3

1. When CP1, CP2, RST1 and RST2 inputs are contact inputs, please set the input type as NPN.

2. When the previous device is an open collector type, the device can adopt the 12V power supply

offered by CTA for the connection.

(Relay Output) (Transistor Output)

CTA USER MANUAL

Counting

4

7

1.7 Default Settings

There are 4 operation modes in CTA: timer, counter, tachometer and timer + counter. The table below offers the preset parameters for all functions.

Function Preset setting Select function Timer Timer mode Up (counting up) Output mode Sond1 Displayed unit S 001 (0.01) Pulse width of output 1 0.02sec

Timer

Min. width of reset signal Input signal type NPN Select function Counter Counter mode Stage1 (1 stage)

Input mode Up (counting up) Output mode F Counting speed 5K Position of decimal

point Pre-scale value 1.000

Counter

Save data while switching off power Min. width of reset signal Input signal type NPN

20ms

0 (no decimals)

Clear

20ms

Select function Tachometer Output mode 2Lo1Lo Counting speed 5K Position of decimal point 0 (no decimals) Pre-scale value 1.000 (default) Delay time while switching on power

Ta chome te r

Average of input data 0 (function disabled) Min. width of reset signal 20ms Input signal type NPN Select function Input mode of timer Up (counting up) Output mode of timer Sond1

Displayed unit of timer

Input mode of counter Up (counting up)

Output mode of counter F

Counting speed 5K

Pulse width of output 1 0.02sec

Timer + Counter

Position of decimal point 0 (no decimals) Pre-scale value 1.000 (default) Save data while switching off power Min. width of reset signal 20ms Input signal type NPN

Function Preset setting

0.0 (no delay)

Mix（Timer +Counter）

S 001（0.01）

Clear

1.8 Easy DIP Switch Setup

The tables below are the DIP switches for each mode of CTA. Please be noted that in the “timer + counter” mode, setting up parameters by DIP switches are not allowed.

 Timer

Switch

1 DIP switch Disabled Enabled

2 Timer mode

3

5 6

8 Width of reset signal 20ms 1ms

Function OFF ON

Output mode

Displayed unit

See top-right table

See bottom-right table

up

down

Switch 3 Switch 4 Output mode

OFF OFF Sond1

ON OFF Sond2

OFF ON Soffd

ON ON Son

Switch 5 Switch 6 Switch 7 Displayed unit

OFF OFF OFF 0.01 sec.

ON OFF OFF 0.1 sec.

OFF ON OFF 1 sec.

ON ON OFF min., 0.01 sec.

OFF OFF ON min., 0.1 sec.

ON OFF ON 0.1 min.

OFF ON ON minute

ON ON ON hr., min., sec.

CTA USER MANUAL

Counting

4

 Counter

Switch

1 DIP switch Disabled Enabled

2 Counting mode

3

5 Counting speed 30cps 10Kcps 6 Reserved - 7 Input signal NPN PNP 8 Width of reset signal 20ms 1ms

 Tachometer

Switch

1 DIP switch Disabled Enabled 2 Reserved - 3

5 Counting speed 30Hz 10KHz 6 Reserved - 7 Input signal NPN PNP 8 Width of reset signal 20ms 1ms

Function OFF ON

Output mode

Function OFF ON

Output mode

See the table on the right

up

down

Switch 3 Switch 4 Output mode

OFF OFF F

ON OFF N

OFF ON C

ON ON R

Switch 3 Switch 4 Output mode

OFF OFF Lo-Lo

ON OFF Lo-Hi

OFF ON Hi-Lo

ON ON Hi-Hi

※When Switch 1 is enabled (ON), the parameters can only be set up by Switch 1 ~ Switch 8 and cannot be modified in the system. If the parameters have to be set in the system, please disable Switch 1 (OFF).

CTA USER MANUAL

Max. counting = 35,999,999 secs. (10,000

x

There are 12 output modes in the timer. The user can choose the mode that best meets

x

CHAPTER TWO: FUNCTIONS

2.1 Timer

There are counting up and counting down modes in the timer.

2.1.1 Setting up the counting unit

sec. 0.01 ~ 9,999.99 sec. 0.1 ~ 99,999.9 A unit = 0.1 sec. Max. counting = 99,999.9 secs. sec. 1 ~ 999,999 A unit = 1 sec. Max. counting = 999,999 secs. min., sec. 0.01 ~ 9,959.99 A unit = 0.01 sec. Max. counting = 5,999.99 secs. min., sec. 0.1 ~ 99,959.9 A unit = 0.1 sec. Max. counting = 59,999.9 secs. min. 0.1 ~ 99,999.9 A unit = 0.1 min. Max. counting = 99,999.9 mins. min. 1 ~ 999,999 A unit = 1 min. Max. counting = 999,999 mins.

hr., min., sec.

1 ~ 995,959 A unit = 1 sec. Max. counting = 359,999 secs. (100 hrs.)

A unit = 10ms Max. counting = 9,999.99 secs.

hr., min. 1 ~ 999,959 A unit = 1 min.

hr. 1 ~ 999,999 A unit = 1 hr. Max. counting = 699,999 hrs.

hrs.)

2.1.2 Setting up the parameters in the timer

To enter the page for parameter setting of the timer, press in the main menu for more than 3 seconds. After the setup is completed, press page you are in and return to the main menu.

z

x

Select functions: There are 4 modes in CTA, (left to right) timer, counter, tachometer and timer + counter.

Select timer mode: counting up and counting down

x

Select output modes: the demand. See 2.1.3 for more details.

x

Select display unit: the min. unit 10ms ~ the max. unit hour are selectable

x

for more than 3 seconds under any of the parameter

x

Select pulse width of output 1: The default output time is 0.02 second. When the parameter is set to 0.00

z

second, the output status will continue.

Select min. width of reset signal: The default value is 20ms; can be set to 1ms.

z

x

Select input signal types: NPN and PNP

z

Back to Top

x

CTA USER MANUAL

Signal On Delay 1

the execution of clear signal, the timer is reset

Output signal

Signal On Delay 2

nabled (Hi)

Start signal

Pause signal

Clear signal

Signal Off Delay

2.1.3 Setting up output mode of the timer

There are 12 modes in the timer for different control demands from the user. The default output time of the 12 modes is 0.02 second. If you wish the system to keep the operation of the output, please set the output time to 0.00 second.

Power signal

Start signal

Pause signal

Clear signal

Output signal

Up

Down

Power signal

Start signal

Pause signal

Clear signal

SV

Up

Down

SV

t

SV

0

SV

0

t

tt

0

Signal On Delay 1 (Sond1)

The start signal is in rising-edge trigger mode and starts to time after the rising edge is triggered until the set time for output. During

and waits for the start signal to restart the timing.

Signal On Delay 2 (Sond2)

The start signal starts to time when e until the set time for output. During the execution of clear signal and start signal being disabled (Lo), the timer is reset and waits for the start signal to restart the timing.

Power signal

Output signal

Up

Down

SV

Signal Off Delay (Soffd)

The output starts when the start signal is at rising-edge trigger. When the start signal is at falling edge, the timer will start to time until the set time for disabling the output. If the clear signal is enabled (Hi) when the start

0

signal is at rising edge, the output will stop immediately.

Output signal

Signal On

The start signal starts to time and output when

the rising edge is triggered and the clear signal

is not executed. When the set time is reached,

Output signal

Power On Delay

CTA immediately starts to time after the power

n of clear signal

Output signal

value is held when the power is switched off. In

CTA USER MANUAL

Power signal

Start signal

Pause signal

Clear signal

Up

Down

Power signal

Start signal

Pause signal

Clear signal

Up

Down

SV

0

Signal On (Son)

the timer will return to the default value and the output will be disabled.

0

If clear signal is received during the execution of the timer, the timer will return to the

0

default value and the output will stop.

Power On Delay (Pond)

is switched on. During the timing, the start signal and pause signal are able to stop the

t

tt

timing. When the set time is reached, the output will be enabled and the timing will stop.

When the clear signal is executed, the timing will be reset until the executio is completed and the timing will start again.

Power signal

Start signal

Pause signal

Clear signal

Up

Down

SV

Power On Delay Hond (PondH)

Same as “Pond”

tt t

The only difference is whether the current

t

PondH, After the power is switched on, the

0

Power On Delay Hold

timer will resume the timing.

Output signal

timer output set as 0

Output signal

timer output not set as 0

not be executed. When the set time is reached, the timing will be reset and restarted and the output will

Output signal

Repeat Cycle Hold

Timer outpu t set as 0

Output signal

Power signal

CTA USER MANUAL

Power signal

Start signal

Pause signal

Clear signal

Up

Down

SV

0

SV

0

Repeat Cycle

Start signal

Pause signal

Clear signal

SV

Up

SV

Down

tt t

Repeat Cycle

Repeat Cycle (RCY)

Output in cycle. When the output time is selected as 0 (left: continuous output), the output of the first timing cycle will

be enabled until the next cycle.

When the output time is not 0 (right), the output time will be different from when the output time is 0.

Power signal

Start signal

Pause signal

Clear signal

SV

Up

SV

Down

0

Start signal

Pause signal

Clear signal

SV

Up

SV

Down

tt

0

RCYH timer output not set as 0

t

Repeat Cycle Hold (RCYH)

Same as “RCY” The only difference is whether the current value is held when the power is switched off. In RCYH, After the power is switched on, the timer will resume the timing.

Power signal

Output signal

Repeat Cycle 2

Signal Cumulate

e timing

output. During the execution of clear signal, the

timer is reset and waits for the start signal to be

Output signal

be On and the timer will restart

Start signal

Pause signal

Clear signal

Down

SV1

SV2

Up

0

SV1 SV2

0

Power signal

CTA USER MANUAL

Repeat Cycle2 (RCY2)

Output in cycle.

The start signal starts to time and output when the rising edge is triggered and the clear signal is not executed. When the set time SV2 is reached, the output will be disabled and the timer continue to time until the set time SV1 is reached and the timer will start the timing again.

Power signal

Start signal

Pause signal

Clear signal

Up

Down

Power signal

Start signal

Pause signal

Clear signal

Output signal

SV

Up

SV

Down

SV1

SV2

0

SV1 SV2

0

Signal Cumulate (SCON)

Latched cumulate timer. When the start signal is enabled (Hi), th will start until the set time is reached for

0

enabled (Hi) again. CTA will resume the timing.

Signal Twin ON-Start (STON)

Output in cycle.

The start signal starts to time and output when the rising edge is triggered and the clear signal is not executed. When the set time SV2 is reached, the output will be disabled and the timer will restart the timing from 0 until it reaches the set time SV1 and turn Off.

Signal Twin ON-Start

Start signal

Pause signal

Clear signal

SV1 SV2

Up

0

SV1

Down

SV2

0

Signal Twin OFF-Start

Signal Twin Off-Start (STOFF)

Output in cycle.

The start signal starts to time when the rising edge is triggered and the clear signal is not executed. When the set time SV1 is reached, the output will the timing from 0 until it reaches the set time SV2. The timer will then start the timing again and disable the output.

CTA USER MANUAL

x

Select input modes: counting up, counting down, command counting up/down, individual counting up/down,

x

Pulse width of output 1: The default output time is 0.02 second. When the parameter is set to 0.00 second,

x

2.2 Counter

The counter functions include: 1-stage counting, 2-stage counting, batch counting, total counting and dual counting.

1-stage counting Only 1 SV is allowed. 2-stage counting 2 SVs and 2 PVs are allowed.

Batch counting

Total counting

Dual counting For addition and subtraction of CP1 and CP2.

2.2.1 Setting up the parameters in the counter

To enter the page for parameter setting of the counter, press in the main menu for more than 3 seconds. After the setup is completed, press page you are in and return to the main menu.

When the PV equals SV, output 2 will be enabled and the batch PV will plus 1. This will repeat until the batch PV reaches batch SV and output 1 will be enabled. There is only one SV in total counting. When the PV equals SV, the output will be enabled. The clear signal will then be enabled, and the counting will restart and PV will be accumulated into the total counter.

for more than 3 seconds under any of the parameter

z

x

Select functions: There are 4 modes in CTA, (left to right) timer, counter, tachometer and timer + counter.

x

Select counter functions: 1-stage counting, 2-stage counting, batch counting, total counting, dual counting.

quadrature input

x

Select output modes: CTA offer 11 output modes, among which mode S, T and D are only valid with input modes Ud_A, Ud_b and Ud_C. See 2.2.2 for more details.

x

Select counting speed: Maximum 10Kcps; others 5K, 1K, 200, 30 and 1cps.

x

the output status will continue.

x

Pulse width of output 2: This parameter is adjustable according to different output modes selected. If the output mode is C, the default output time will be 0.02 second. When the parameter is set to 0.00 second, the output status will continue.

x

Set up the position of decimal point: 0 (no decimal point), 1 (one digit after decimal point), 2 (two digits after decimal point), 3 (three digits after decimal point)

x

Set up pre-scale value: 1.000 (default 1:1) Range: 0.001 ~ 99.999

x

z

Back to Top

Save the data while switching off the power: When SAVE is selected, the PV will be saved; when CLEAR is selected, the PV will not be saved.

x

Set up minimum width of reset signal: Default = 20ms; 1ms is also selectable.

Select input signal types: NPN and PNP

x

2.2.2 Setting up input mode of the counter

A

234

CP1: Counter input CP2: Counter input prohibited

Note: has to be larger than width of min. Input signal

A

12345

CP1: Counter input prohibited CP2: Counter input

Note: has to be larger than width of min. Input signal

A

n-2

n-4

n-3

CP1: Counter input CP2: Counter input prohibited

Note: has to be larger than width of min. Input signal

A

n-2

n-3

n-4

n-5

Note: has to be larg er than width of min. Input signal

CTA offers 5 counting modes: counting up, counting down, command counting up/down, individual counting up/down and quadrature input.

The minimum signal width of the counting speed:

Counting speed

Minimum signal width 1cps 500ms 30cps 16.7ms 1Kcps 0.5ms 5Kcps 0.1ms 10Kcps 0.05ms

Counting up

CP1

CP2

Present Value

Counting down

CP1

CP2

Present Val ue

H

L

H

L

1

0

A

H

L

H

L

n

n-1

0

A

Prohibit

H

CP1

L

H

CP2

L

Present Val ue

0

A

CP1: Counter input prohibited CP2: Counter input

H

CP1

L

H

CP2

L

n

Present Value

0

A

n-1

A

Prohibit

Command counting up/down

CTA USER MANUAL

1

H

Note: has to be larger than width of 1/2 min. input signal.

0

T

TTT

T

999999

TTTTTTT

T

TTTTT

TTT

T

TTT

TTTTTTTTT

T

Input mode

Up/Down A, B, C

999999

Output

setting

Input mode

Up/Down A, B, C

Individual counting up/down

Quadrature input

CP1

CP2

L

H

L

B B B B

Present Value

0

2

1

0

B

3

2

2.2.3 Setting up output mode of the counter

CTA offers 11 output modes in the counter for 1-stage and 2-stage counting. When 1-stage output is selected, output 2 and output 1 will be operated in the same way.

Output mode setting

Up Down

F

RESET

999999

SV2

SV1

0

TT

OUT1

OUT2

RESET

N

999999

SV2

SV1

0

TT

OUT1

OUT2

RESET

C

999999

SV2

SV1

0

OUT1

OUT2

R

RESET

SV2

SV1

0

OUT1

OUT2

mode

Up

K

RESET

999999

SV2

SV1

0

TT

OUT1

OUT2

P

RESET

999999

SV2

SV1

0

TT TT

OUT1

OUT2

Q

RESET

999999

SV2

SV1

0

TT TT TTTTTT

OUT1

OUT2

A

RESET

SV2

SV1

0

TT

OUT1

OUT2

Down

TT

T

TT

TTTT

T

TT

TTT

T

TTT

T

CTA USER MANUAL

RESET

setting

Up/Down A, B, C

Input mode

Output mode

S

999999

SV2

SV1

0

OUT1

OUT2

T

999999

SV2

SV1

0

OUT1

OUT2

D

999999

SV2

SV1

0

OUT1

OUT2

2.2.4 Batch counting

When the PV equals SV, output 2 will be enabled and the batch PV will plus 1. The PV will be cleared and the counting will restart. This will repeat until the batch PV reaches batch SV and output 1 will be enabled. For example: A fruit packaging machine has to package 100 boxes with 5 fruit in each box. In this case, set the SV as 5 and batch SV as 100. When the belt starts to package the fruit, output 2 will inform the motor of the moving and plus 1 to the batch counter. After repeating the process for 100 times, i.e. 500 fruit of 100 boxes are packaged, output 1 will be enabled and notify the user by sound, light or indicator that the packaging has been completed.

2.2.5 Total counting

There is only one SV in total counting. When the PV equals SV, the output will be enabled. If the clear signal is enabled now, the counting will restart and PV will be accumulated into the total counter.

CTA USER MANUAL

For example: An egg packaging machine packages 5 eggs as a unit. After the 5 eggs are packaged, output 1 and output 2 will be enabled at the same time and the motor will be informed to move to the next package. This process will repeat and record the number of eggs packaged in the total counter for the user to check at any time.

CTA USER MANUAL

x

. For example, when you

. If the set value

x

power: 0.0 (default). The tachometer will start to run when the

OUT1 se t val ue : OUT1 ON

OUT2 se t val ue : OUT2 ON

(LO-LO)

OUT1 set value : OUT1 ON

Measurement value

OUT2 set val ue : OU T2 ON

2.3 Tachometer

The tachometer in CTA measures the pulse width and displays the current frequency. The measuring and displaying unit in the tachometer is frequency (Hz); therefore, if you want the value to be displayed in rotation speed (rpm), you have to convert the frequency into rotation speed. See 2.3.3 for how to convert.

2.3.1 Setting up the parameters in the tachometer

To enter the page for parameter setting of the tachometer, press in the main menu for more than 3 seconds. After the setup is completed, press return to the main menu.

for more than 3 seconds under any of the parameter page you are in and

Select functions: There are 4 modes in CTA, (left to right) timer, counter, tachometer and timer + counter.

z

x

Select output modes: There are 4 output modes, 2Lo1Lo, 2Lo1Hi, 2Hi1Lo and 2Hi1Hi

z

Back to Top

select 2Hi1Lo, and assume the first set value is 100 (2Hi) and the second 50 (1Lo), the output value of the tachometer will be below 100 (2Hi) and above 50 (1Lo) and CTA will not perform an output exceeds the range, CTA will perform an output.

Select rotation speed: Maximum 10Kcps; others 5K, 1K, 200, 30 and 1cps.

x

Set up the position of decimal point: 0 (no decimal point), 1 (one digit after decimal point), 2 (two digits after decimal point), 3 (three digits after decimal point)

Set up pre-scale value: 1.000 (default 1:1) Range: 0.001 ~ 99.999

Set up the delay time after switching on the set delay time is due after the power is switched on. Setup range: 0.1 ~99.9 seconds.

x

Set up average value of the input filter: The average value is for making the present value detected by the tachometer more stable. The setup range is 0 ~ 3 (1 = 2 data, 2 = 4 data, 3 = 8 data). For example, if you select “3”, the system will average the 8 present values from the tachometer to make the present value displayed on the screen more stable.

x

Set up minimum width of reset signal: Default = 20ms; 1ms is also selectable.

x

Select input signal types: NPN and PNP.

x

2.3.2 Setting up output mode of the tachometer

x

There are 4 output modes in the tachometer, 2Lo1Lo, 2Lo1Hi, 2Hi1Lo and 2Hi1Hi. Take 2Lo1Lo for example, assume the set value of output 2 is 100 and 50 for output 1, when the present value measured by the tachometer is below 50, output 1 and output 2 will both be enabled.

2Lo1Lo 2Lo1Hi

OUT2 set value

Measurement value

OUT1 set value

OUT1

OUT2

Measurement value

OUT2 set value

Measurement value

OUT1 set value

OUT1

OUT2

Measurement value

(LO-HI)

CTA USER MANUAL

OUT1 se t val ue : OUT1 O N

OUT2 set value : OUT2 ON

OUT1 set value : OUT1 ON

OUT2 set value : OUT2 ON

2Hi1Lo 2Hi1Hi

OUT2 set value

Measurement value

OUT1 set value

OUT1

OUT2

Measurement value Measurement value

(HI-LO)

OUT2 set value

Measurement value

OUT1 set value

OUT1

OUT2

Measurement value Measurement value

(HI-HI)

2.3.3 Calculating the unit of rotation speed

The tachometer is able to receive an open collector type input signal of maximum 10KHz and displays the unit as Hz on the screen of the tachometer. Therefore, if you wish the rotation speed to be displayed in rpm, you have to

convert Hz into rpm by an equation and fill the obtained value into rotation speed in rpm on the screen.

The conversion equation:

Frequency (Hz) × Pre-scale = Rotation Speed (rpm)

Pre-scale = 60/N

N※ = Number of pulses per revolution (ppr)

Example 1: Connecting Delta servo drive with a servo motor and measure the current rotation speed by CTA

The built in encoder in Delta servo motor is 10,000ppr with four phases, OA, OB, 2,500ppr.

Pre-scale = 60/2,500 = 0.024

At this time, the servo inputs 240rpm, equivalent to the tachometer receiving 10KHz currently.

Frequency and rotation speed of CTA connected to Delta servo drive:

Frequency

10KHz 240rpm

5KHz 120rpm 1KHz 24rpm

200Hz 4.8rpm

Note: OA and OB of Delta ASD servo motor A and B series only support differential signals. OZ (10,000ppr) supports open collector.

Example 2: Measuring the current rotation speed of the AC fan motor through a sensor

Figure 1: 1 revolution of the fan equals 1 pulse; therefore Pre-scale = 60/N = 60/1 = 60

At this time, the sensor detects the speed and sends it back to tachometer. Assume the value displayed on the screen is 2,700rpm,

F × 60/1 = 2,700 F = 45Hz

Figure 2: 1 revolution of the fan equals 3 pulses; therefore

Pre-scale = 60/N = 60/3 = 20

Rotation speed

of the tachometer to display the

andOB. Every phase is

OA

CTA USER MANUAL

At this time, the sensor detects the speed and sends it back to tachometer. Assume the value displayed on the screen is 3,200rpm,

F × 60/3 = 3,200 F = 160Hz

Figure 1 Figure 2

CTA USER MANUAL

x

output modes. The user can choose the mode that best meets the demand.

x

fault output time will be 0.02 second. When the parameter is set to 0.00 second, the

Set up the position of decimal point: 0 (no decimal point), 1 (one digit after decimal point), 2 (two digits after

x

2.4 Timer + Counter (Mixed Mode)

CTA offers timer + counter mode. The timer corresponds to OUT1 (output 1) and the counter to OUT2 (output2). In this mode, the timer and counter both have a phase signal input; therefore, part of the functions will be limited. For example, there are 12 output modes for the timer of CTA, but only 8 output modes available in the timer + counter mode (Rcy2, Scon, Ston and Stoff are not available). In addition, the mixed mode only offers input modes Up and Down for the counter and S, T, D are no longer available in the output modes. See 2.4.1. for how to set up the parameters in the mixed mode.

2.4.1 Setting up the parameters in the “timer + counter”

To enter the page for parameter setting of the timer + counter, press in the main menu for more than 3 seconds. After the setup is completed, press are in and return to the main menu.

for more than 3 seconds under any of the parameter page you

Select functions: There are 4 modes in CTA, (left to right) timer, counter, tachometer and timer + counter.

z

Select timer mode: counting up and counting down

z

Select output modes: There are 8 See 2.1.3 for more details.

z

Select display unit: the min. unit 10ms ~ the max. unit hour are selectable

Select input modes: Only counting up and counting down are available. See 2.2.2 for more details.

z

Select output modes: Same as the output modes of the counter except for S, T, D. See 2.2.3 for more details.

Select counting speed: Maximum 5Kcps; others 1K, 200, 30 and 1cps.

z

Select pulse width of output 1: The default output time is 0.02 second. When the parameter is set to 0.00

z

second, the output status will continue.

Pulse width of output 2: This parameter is adjustable according to different output modes selected. If the output mode is C, the de

z

output status will continue.

z

decimal point), 3 (three digits after decimal point)

Set up pre-scale value: 1.000 (default 1:1) Range: 0.001 ~ 99.999

z

Save the data while switching off the power: When SAVE is selected, the PV will be saved; when CLEAR is

z

selected, the PV will not be saved.

Set up minimum width of reset signal: Default = 20ms; 1ms is also selectable.

z

Select input signal types: NPN and PNP

z

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x

x x

x

x x

x

x x

x

x x

x

CTA USER MANUAL

x

stage

x

CHAPTER THREE: APPLICATIONS

3.1 On Cut-To-Length Machines

The machine adopts the counter function in CTA and acquires the feedback signal from the encoder for measuring the actual operation distance. When the set distance is reached, the output signal will enable the knife for the cutting.

Example: We will simulate the action above by using CTA and Delta ASDA-A.

 Parameter settings

z

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Select function: Counter

x

Select counting mode: 1-stage counting (only 1 set value). If you need 2 set values, select 2counting.

Select input mode: Quadrature input

x

Select output mode: C; the counting will automatically restart when the set value is reached.

Select counting speed: The maximum 10K

Set up pulse width of output 2: 0.02 second

x

Set up the position of decimal point: 0 (no decimal point)

x

Set up pre-scale value: 0.056

Save the data while switching off the power: Select CLEAR, and the PV will not be saved.

x

Set up min. width of reset signal: select default value 20ms.

Select input signal type: NPN

CTA USER MANUAL

π

100mm

 Output Wiring

Connect

Assume

The set value in the CTA counter is 160mm. When the counting reaches 160mm, an output signal will be given

to the knife for the cutting. See figure 2.

In the figure, we can see the diameter of the roller is 44.8mm Delta encoder 1 phase = 2,500ppr

Calculate the pre-scale value

ppr

π: 3.1416 D: diameter of the roller ppr: number of pulses per revolution of the encoder

Prescale =

When the value in CTA = 2,858 2858 x 0.056 = 160mm (actual moving distance)

0V, CP1 (phase A) and CP2 (phase B) to CN1 terminal on ASDA-A servo drive

D

= Prescale

ppr

D

=

2500

84414163 .x.

= 0.056mm/pulse

Figure 1

SV has to be 160mm

The servo drive stops at 100mm on the ruler before its operation

Figure 2

CTA USER MANUAL

Ruler at 60mm

Figure 3

When the tachometer reaches 160mm, the output will be enabled.

Figure 4

The distance moved is 160mm. The ruler stops at 60mm.

B&B Electronics CTA4100A-D User Manual

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