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3505 HUTCHINSON ROAD 

CUMMING, GA 30040-5860

Digital Counter/Timer/Tachometer 

CTT Series

The CTT series is an extremely versatile multi-function device that is easily configured for operation as a digital counter, timer, 
combination timer + counter, or tachometer. Both voltage and non-voltage inputs are accepted from a wide variety of sensor types 
with NPN, PNP, or dry contact outputs. The first output on the CTT is a single-pole, single-throw relay and NPN transistor 
that operate concurrently. The second CTT output can be ordered as either a single-pole, double throw relay or NPN transistor.  
Parameters are easily set using the externally accessible DIP switches or the lockable keypad. The double-line, 6-digit, two-color 
LCD display shows the counter, timer, or tachometer present values, setting values and menu parameters during set-up. Additional 
individual indicators are provided for inputs, outputs and functions. The standard 1/16 DIN size, included panel mounting clip 
and gasket make panel mounting a snap. The CTT is available in 120-240VAC and 24VDC powered models.

 

For additional product information, please download the complete product manual which can be found at:
www.AutomationDirect.com

Description: 

MODE

CTT

     

A

UTOMATION

D

IRECT

.com

RST2
RST1

 

K/P2

 

K/P1

 

OUT2

 

OUT1

 

LOCK

RESET

Quick Start Guide

Box Contents and Unpacking Instructions

After receiving the CTT Counter/Timer/Tach, please check for the following:
•  Make sure that the package includes the CTT Counter/Timer/Tachometer, the 

mounting bracket and hardware, and the Quick Start Guide.

• Inspect the unit to insure it was not damaged during shipment.
•  Make sure that the part number indicated on the label corresponds with the 

part number of your order.

•  If anything is missing or damaged, immediately call the AutomationDirect returns 

department @ 1-800-633-0405.

•  For additional product information, please download the complete product manual 

which can be found at: www.AutomationDirect.com

WARNING 

~

Thank you for purchasing automation equipment from Automationdirect.com™, doing business as AutomationDirect. We want your new automation 
equipment to operate safely. Anyone who installs or uses this equipment should read this publication (and any other relevant publications) before installing 
or operating the equipment.
To minimize the risk of potential safety problems, you should follow all applicable local and national codes that regulate the installation and operation of 
your equipment. These codes vary from area to area and usually change with time. It is your responsibility to determine which codes should be followed, 
and to verify that the equipment, installation, and operation is in compliance with the latest revision of these codes.
At a minimum, you should follow all applicable sections of the National Fire Code, National Electrical Code, and the codes of the National Electrical 
Manufacturer’s Association (NEMA). There may be local regulatory or government offices that can also help determine which codes and standards are 
necessary for safe installation and operation.
Equipment damage or serious injury to personnel can result from the failure to follow all applicable codes and standards. We do not guarantee the prod-
ucts described in this publication are suitable for your particular application, nor do we assume any responsibility for your product design, installation, or 
operation.
Our products are not fault-tolerant and are not designed, manufactured or intended for use or resale as on-line control equipment in hazardous environ-
ments requiring fail-safe performance, such as in the operation of nuclear facilities, aircraft navigation or communication systems, air traffic control, direct 
life support machines, or weapons systems, in which the failure of the product could lead directly to death, personal injury, or severe physical or environ-
mental damage (“High Risk Activities”). AutomationDirect specifically disclaims any expressed or implied warranty of fitness for High Risk Activities.
For additional warranty and safety information, see the Terms and Conditions section of our catalog. If you have any questions concerning the installation 
or operation of this equipment, or if you need additional information, please call us at 770-844-4200.
This publication is based on information that was available at the time it was printed. At AutomationDirect we constantly strive to improve our products 
and services, so we reserve the right to make changes to the products and/or publications at any time without notice and without any obligation. This 
publication may also discuss features that may not be available in certain revisions of the product.

Trademarks

This publication may contain references to products produced and/or offered by other companies. The product and company names may be trademarked 
and are the sole property of their respective owners. AutomationDirect disclaims any proprietary interest in the marks and names of others.

Copyright 2011-2012, Automationdirect.com™ Incorporated 

All Rights Reserved

No part of this manual shall be copied, reproduced, or transmitted in any way without the prior, written consent of Automationdirect.com™ Incorporated. 
AutomationDirect retains the exclusive rights to all information included in this document.

CTT-

AN-

D24

D24: 24VDC powered

A120: 100-240VAC powered
AN: NPN output 2

1C: SPDT relay output 2

Counter/Timer/Tachometer

Model Number Explanation

Input Specification

Agency Approvals

Country of Origin

Label Information

General Specifications

MODE

45.00

[1.77]

45.00

[1.77]

65.00

[2.56]

60.00

[2.36]

1

6

11

2

7

12

3

8

13

4

9

14

5

10

15

44.80

[1.76]

44.80

[1.76]

6.35

[0.25]

44.80

[1.76]

CTT

     

A

UTOMATION

D

IRECT

.com

RST2
RST1

 

K/P2

 

K/P1

 

OUT2

 

OUT1

 

LOCK

RESET

44.80

[1.76]

79.35

[3.12]

6.35

[0.25]

47.85

[1.88]

47.85

[1.88]

79.35

[3.12]

Dimensions

 [mm] inch

0V

CP1

CP2/  

GATE

+12V

RST1

RST2/  

START

0V

CP1

CP2/  

GATE

+12V

RST1

RST2/  

START

N.O.

COM

LOAD

+V

0V

N.C.

N.O.

COM

CTT-1C-D24

OUT 

2

21.6 to

26.4 VDC

Load

21.6 to

26.4 VDC

OUT 

1

OUT 

2

CTT-AN-D24

N.O.

COM

0V

LOAD

OUT 

1

0V

LOAD

0V

CP1

CP2/  

GATE

+12V

RST1

RST2/  

START

0V

CP1

CP2/  

GATE

+12V

RST1

RST2/  

START

N.O.

COM

LOAD

+V

0V

CTT-1C-A120

OUT 

2

AC100 to 240V

50/60Hz

Load

AC100 to 240V

50/60Hz

OUT 

1

OUT 

2

CTT-AN-A120

N.O.

COM

0V

LOAD

OUT 

1

0V

LOAD

N.O.

COM

POWER SOURCE 12VDC @ 100mA

POWER SOURCE 12VDC @ 100mA

POWER SOURCE 12VDC @ 100mA

POWER SOURCE 12VDC @ 100mA

N.C.

10

9

3

2

1

15

14

8

7

6

13

12

11

5

4

10

9

3

2

1

15

14

8

7

6

13

12

11

5

4

10

9

15

14

8

7

6

13

12

11

5

4

10

9

3

2

1

15

14

8

7

6

13

12

11

5

4

3

2

1

+

-

+

-

S

S

Terminal Layout

Reset 2 indicator
Reset 1 indicator

Key protect 2 indicator

Output 2 indicator

Key protect 1 indicator

Output 1 indicator

Special function indicator

Lock key

Reset key

Mode and number shift key

PV(Present Value) display

SV(Set Value) display

Timer function indicator

Counter function indicator
Tachometer function indicator

Up/Down key

CTT

     

A

UTOMATION

D

IRECT

.com

LCD Display and Indicators

RST 1/2

Light on when reset signal is detected

BATCH

“Batch Counting Mode” in Counter

K/P 1/2

Light on when key-protected mode is enabled

SET 1 2

SV1, SV2 display

OUT 1/2

Light on when output is executing

TAC

Light on in Tachometer function

H M S

Hour, minute, second, unit of timer, displayed in Timer function

CNT

Light on in Counter function

TOTAL

“Total Counting Mode” in Counter function

TMR

Light on in Timer function

Key Operation

, .

Increase and decrease SV or change paramter settings

´

Left move 1 digit of the selected digit. The indicator of the selected digit will flash.

Ä

Save the set parameters or switch among functions.

LOCK

Prevent settings from being changed. Key-protected mode still works after power cycle. Press LOCK to enter key-protected mode. In non-key-protected status, press 

LOCK to enter Lock 1, press LOCK again to enter Lock 2. Press 

Ä

 

and 

´

 at the same time to disable key-protected mode. 

LoC1

 (Lock 1) disables the functions 

of all keys. 

LoC2

 (Lock 2) allows users to change SV and functions of RESET remain. LOCK only functions in non-key-protected status.

RESET

Clear and reset PV.

Modes: Operation Mode and Configuration Mode

Operation

When the power is on, the timer/counter/tachometer is in the operation mode. Press 

,.

 to change SV, or 

´

 to select to change digit. The indicator of the se-

lected digit will flash. After the change is made, press 

Ä

 to save the setting. If SV or paramters are not changed, press 

Ä

 once to switch between SET1 and SET2.

Configuration

Press 

Ä

 in operation mode for more than 3 seconds to enter configuration mode. Press 

Ä

 once to switch among parameters. To return to operation mode, press 

Ä

 

for more than 3 seconds.

Display, Indicators and Keys

Counter Functions

Counter Input Modes Counter Output Modes

1-Stage

Up

Select from eleven (11) different 

output modes (F, N, C, R, K, P, 

Q, A, S, T, D)

2-Stage

Down

Batch

Up / Command Down

Total

Up/ Down

Dual

Quadrature
Addition
Subtraction

Timer Functions (Up or Down)

Signal On Delay 1

Repeat Cycle

Signal On Delay 2

Repeat Cycle Hold

Signal Off Delay

Repeat Cycle 2

Signal On

Signal Cumulate

Power On Delay

Signal Twin On-Start

Power On Delay Hold Signal Twin Off-Start

Timer + Counter

Timer Functions 

(Up or Down)

Counter Input Modes

Counter Output Modes

Signal On Delay 1

Up

Select from eight (8) different out-

put modes (F, N, C, R, K, P, Q, A)

Signal On Delay 2

Down

Signal Off Delay
Signal On
Power On Delay
Power On Delay Hold
Repeat Cycle 
Repeat Cycle Hold

Tachometer Output Modes

Select from four (4) different output modes
2Lo/1Lo
2Lo/1Hi
2Hi/1Lo
2Hi/1Hi

Digital Counter / Timer / Tachometer General Specifications

Input Power Requirements

100 to 240 VAC 50/60 Hz

24 VDC

Operation Voltage Range

85 to 264 VAC

21.6 to 26.4 VDC

Power Consumption

Less than 10VA

Power Source

12VDC 

w

10%, 100mA

Display

Double-line, 6-digit LCD display (SV = 8mm, PV = 6mm)

Input Signal

NPN ON impedance 1K ohm max. ON residual voltage: 2V max.

PNP 4.5 to 30VDC, low level: 0 to 2VDC

Output 1

Relay: SPST max. 250VAC, 5A (resistive load), 4A (inductive load); Transistor: NPN open collector. When 100mA @ 

30VDC, residual voltage = 1.5VDC max 

Output 2

CTT-1C-xxx

Relay: SPDT max. 250VAC,  5A (resistive load), 4A (inductive load)

CTT-AN-xxx

Transistor: NPN open collector. When 100mA @ 30VDC, residual voltage = 1.5VDC max 

Output Switching Time

2 milliseconds max

Dielectric Strength

2000VAC 50/60Hz 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

+32°F to +122°F (0°C to +50°C)

Storage Temperature

-4°F to +149°F (-20°C to +65°C)

Altitude

2000m or less

IP Rating

IP 66 (with proper enclosure installation)

Case Materials

Case = ABS Plastic, Lens = Polycarbonate

Ambient Humidity

35% to 85% RH (non-condensing)

Memory Backup upon Power Failure

EEPROM writing up to 100,000 times; Memory duration: 10 years

Terminals

Conforming Wiring

0.25-1.65mm² (24 to 16 AWG)

Permitted Torque

0.5Nm (0.369 ft/lbs)

Agency Approvals

UL508 listed (E311366), cULus, CE marked

P.1

CTT-AN-D24 

 

 

 
 

 

 

MADE IN CHINA

Model Number

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