• Equipped with 2 Counters and counts over a maximum binary
range of 32-bits.
• Accepting input pulse frequencies of up to 500 kHz allows
precise control of fast motions.
• The Unit is equipped with 2 Digital Inputs, 2 Digital Outputs and
30 Soft Outputs.
• A maximum response time of 0.5 ms guarantees high-speed
closed loop control of applications.
CJ1W-CT021
Features
•
•
•
•
•
•
Input frequencies to 500 kHz.
32-bit counting range.
Digital variable noise filter provided.
5, 12, 24 V line driver inputs available.
Supports simple, ring, and linear counting modes.
Supports two external control inputs, and a total of 16 functions can be set: open gate, close gate, preset, reset, capture, stop/capture/reset
combinations, reset enable, and more.
•
One Unit supports two external outputs and 30 internal outputs with counter value zone comparisons, target comparisons, delays, holds,
programmable outputs, and hysteresis settings.
•
Pulse rate measurement function and data logging.
•
Counter outputs and external control inputs can be used to trigger interrupt tasks in the CPU.
1
CJ1W-CT021
System Configuration
High-speed Counter Unit
CJ1W-CT021
Counter Inputs
Typical applicable Sensors for Digital Inputs:
Typical applicable Actuators for Digital Outputs:
Encoder
Photoelectric Sensor
Relays
Push Button
Proximity Switch
Lamp
Limit Switch
Motor Interface
ON/OFF
High/Low Speed
Forward/Reverse
Brake ON/OFF
Proximity Switch
Other Actuators
2
CJ1W-CT021
Ordering Information
International Standards
•
The standards are abbreviated as follows: U: UL, U1: UL (Class I Division 2 Products for Hazardous Locations), C: CSA, UC: cULus, UC1: cULus (Class I Division
2 Products for Hazardous Locations), CU: cUL,
N: NK,
L: Lloyd, and CE: EC Directives.
•
Contact your OMRON representative for further details and applicable conditions for these standards.
Specifications
Countable
channels
Encoder A and B inputs,
pulse input Z signals
Open collector
Input voltage: 5 VDC, 12 V, or 24 V
(5 V and 12 V are each for one axis only.)
2
RS-422 line driver
500kHz
Max. count-
ing rate
50kHz
4
0.28
−
CJ1W-CT021
UC1,
N,
L,
CE
No. of unit
numbers allo-
cated
Current con-
sumption (A)
5V
24 V
Unit type
Product
name
Highspeed
Counter Unit
Model
Standards
CJ1 Spe-
cial I/O
Units
Note:
The following functions become unavailable when it is used with the
NJ-series
CPU unit.
-
Counter value capture using allocation area (CIO)
-
The capture, Stop/capture/continue, Stop/capture/reset/continue, and Capture/reset functions using External Control Input Function
-
Pulse rate range control using Output Control Mode
-
The pulse rate measurement function
-
Because the
NJ
Series has no power OFF interrupt task, operation cannot be restarted from the position at which the power was interrupted.
-
The IORD/IOWR instruction
-
Starting of External Interrupt Task by Output and External Control Input
Accessories
The High-Speed Counter Unit includes the 40-pin solder-type connectors C500-CE404 (socket: Fujitsu FCN-361J040-AU, cover: Fujitsu FCN-360C040-J2).
Applicable Connectors
Name
Connection
Soldered
Specifications
FCN-361J040-AU Connector
FCN-360C040-J2 Connector Cover
Right angle type, included with Unit
FCN-363J040 Housing
FCN-363J-AU Contactor
FCN-360C040-J2 Connector Cover
Right angle type
Model
C500-CE404
Crimped
C500-CE405
40-pin
Connectors
Pressure welded
FCN-367J040-AU/F, w/o connector cover
C500-CE403
Soldered
40-pin, soldered, w/connector cover
Crimped
40-pin, crimped w/connector cover
C500-CE402
C500-CE401
Connector-Terminal Conversion Unit and Connection Cables
Product Name
Specifications
Cable length: 0.5m
Cable length: 1.0m
Connecting Cables
For Connect-
ing with Termi-
nal Block
Connector-Ter-
minal
Conversion
Unit
Through
Slim
Normal
wiring
Cable length: 1.5m
Cable length: 2.0m
Cable length: 3.0m
Cable length: 5.0m
40-pin M2.4 screw terminals
40-pin M3.5 screw terminals
40-pin M3 screw terminals
Model
XW2Z-050B
XW2Z-100B
XW2Z-150B
XW2Z-200B
XW2Z-300B
XW2Z-500B
XW2B-40G4
XW2B-40G5
XW2D-40G6
Mountable Racks
NJ system
Model
CPU Rack
10 Units
Expansion Rack
10 Units
(per Expansion
Rack)
CJ system (CJ1, CJ2)
CPU Rack
10 Units
Expansion
Backplane
10 Units
(per Expansion
Backplane)
CP1H system
CP1H PLC
2 Units *
NSJ system
NSJ Controller
Not
supported
Expansion
Backplane
8 Units
CJ1W-CT021
* A CP1W-EXT01 CJ Unit Adaptor is required.
3
CJ1W-CT021
Specifications
General Specifications
Item
Unit type
General Specifications
Ambient Operating Temperature
Ambient Storage Temperature
Ambient Operating Humidity
Internal Current Consumption
Dimensions
Weight
Mounting Position
Maximum Number of CT021
Units per Rack
Maximum Number of CT021
Units per basic CJ/NJ system
Data Exchange with CPU Unit
CJ-series Special I/O Unit
Conform to general specifications for CJ/NJ-series
0 to 55
°C
−20
to 75
°C
10% to 90% without condensation
280 mA (at 5 V)
31
×
90
×
65 mm (W
×
H
×
D)
100 g
CJ-series CPU Rack or CJ-series Expansion Rack *1,
NJ-series
CPU Rack or
NJ-series
Expansion Rack
Equal to the number of slots of the Rack *2
24
• I/O Refresh Data Area (CIO-bits 200000 to 255915, CIO-words 2000 to 2959): *3
• Special I/O Unit DM-Area (D-words 20000 to 29599): 400 DM-words per Unit are transmitted form the CPU to the Unit
at Power Up or when the Unit is restarted *4
CJ1W-CT021
*1. The Unit must be in one of the five positions immediately to the right of the CJ1-H CPU Unit or in one of the three positions immediately to the
right of the CJ1M CPU Unit to activate external interrupt tasks.
No
external interrupt tasks can be activated if the Unit is in any other position
(i.e., 6th Unit position or further away from the CJ1-H CPU Unit, or 4th Unit position or further away from the CJ1M CPU Unit), or if it is on a
CJ-series Expansion Rack.
*2. The maximum number of Units per Rack is also depending on the maximum supply current of the Power Supply Unit and the current
consumption of other Units on the Rack.
*3. The CJ1W-CT021 Special I/O Unit is allocated words for 40 words in the Special I/O Unit (CIO) Area.
*4. The CJ1W-CT021 Special I/O Unit is allocated words for 4 Units in the Special I/O Unit DM Area. From the 400 DM words that are allocated,
the first 113 words are used to make the DM-settings and the remaining 287 words can be used as work-words.
Functional Specifications
Item
Number of Counters
Counter Type
Maximum Input Frequency
Maximum Response Time
Signals per Counter
Digital I/O
2
• Simple Counter
• Circular Counter
• Linear Counter
The Counter Type can be chosen by DIP switch at the front of the Unit. By default the Counters are set to Simple Counter.
500 kHz
0.5 ms (refer to High-speed counter Unit Operation Manual (Cat.
No.W401)
Phase A, B and Z
• 2 Digital Inputs (I0 and I1):
Every Digital Input can be assigned to a Counter. In this way one Counter can be controlled by a maximum of 2 Digital Inputs.
• 2 Digital Outputs (O0 and O1):
The Unit Output Pattern represents the 2 Digital Outputs and 30 Soft Outputs.
• Phase Differential (multiplication
×1),
(multiplication
×2)
* 1 and (multiplication
×4)
* 1
• Up/Down * 1
• Pulse & Direction * 1
• Open Gate / Start Counter: Counter is enabled to count pulses
• Close Gate / Stop Counter: Counter is disabled to count pulses
• Preset Counter: Preset Value can be set in CIO
• Reset Counter to zero
• Capture Counter Value: Captured Counter Value can be read using IORDinstruction
• Gate * 1
• Reset * 1
• Preset * 1
• Capture * 1
• Stop/Capture-Continue * 1* 4
• Stop/Capture-Reset/Continue * 1* 4
• Capture/Reset * 1* 4
• Enable Reset * 1
• Disable Reset * 1
For every Function the corresponding action can be triggered on a rising- or on a falling edge.
• Automatic ON/OFF output according to the following three modes:
Range Mode * 1
Comparison Mode * 1
Rate Range * 1* 4
• Manual output control
On changing the Operating Mode of the controller from RUN/MONITOR
→
PROGRAM, an I/O Bus Error or an Overflow/Underflow
Error, the Digital Outputs can be configured to:
• Continue automatic updating Output States
• Freeze Output States * 1
• Predefine Output States * 1
The Output Driver of every Digital Output can be configured as:
•
NPN
• PNP * 1
CJ1W-CT021
Input Signal Types
Counter Control using CIO-
software bits
*4
Digital Input Functionality
Output Control Mode
Output State Control
Output Driver Configuration
4
CJ1W-CT021
Item
Reset Signals
CJ1W-CT021
Every Counter can be reset to zero by (a combination of) the following sources:
• Software Counter Reset Bit
• Digital Input * 1
• Z-Input * 1
• Programmable Output Pulse * 1:
To every Digital Output an ON-delay and/or a Pulse Duration [1 to 9999 ms] can be applied.
• Rate Measurement * 1* 4 : For every Counter the Pulse Rate can be measured by defining a Time-Window [1 to 9999 ms]. Up to
a maximum of 64 Rate Values are stored in the Rate History Log File. Rate Values from the Rate History Log File can be read using
the IORD-instruction. Additionally for every Counter two Rate Ranges can be defined that control the Outputs according to the mea-
sured Rate Value.
• Hysteresis * 1: To prevent Outputs from being switched On and Off by very small fluctuations in the Counter Value around Range
Limits, for every Counter an Hysteresis-value [1 to 255] can be defined (the Unit must in Range Mode).
To suppress noise on the signal lines of the Counter Inputs (A and B) and the Digital Inputs (I0 and I1) a
Noise
Filter can be config-
ured:
• 10 kHz * 1
• 50 kHz (default)
• 500 kHz * 1
For the Digital Inputs the 500 kHz filter can not be selected. The Z-Input Signals of every Counter are filtered with a fixed
Noise
Filter
of 1 kHz.
• The Initial Counter Value * 1 is transferred to the Unit when the Unit is Powered Up or Restarted. The Initial Counter Value is very
useful to overcome problems in case of power failure.
Run-time * 3 configuration and operation of the High-speed Counter Unit is possible by using IORD- and IOWR-instructions. The
following data can be read or written:
• DM-configuration data * 1
• Range- and Comparison Data * 1
• Captured Counter Value
• Rate History Log File Data * 1
• Counter Value
• (Re) Configure High-speed Counter Unit * 1
• Error Clear
• The Digital Outputs and the Soft Outputs of the Unit Output Pattern can all be configured to generate interrupts to the CJ1-H/CJ1M
CPU Unit * 1 * 2.
• Stores up to 30 error log records
Extra Functions
Noise Filtering Counter In-
puts and Digital Inputs
Initial Counter Value
*4
IORD- and IOWR-instruc-
tions
*4
Interrupts of Outputs
*4
Interrupts of Digital Inputs
*4 • The Digital Inputs can all be configured to generate interrupts to the CJ1-H/ CJ1M CPU Unit * 2.
Error History Log Function
*1. This specification item is only supported for Circular and Linear Counters (not for Simple Counters). For a complete overview of the differences
between Simple and Circular/Linear Counters refer to High-speed Counter Unit Operation Manual (Cat.
No.
W401).
*2. To activate external interrupt tasks, a CJ1-H or CJ1M CPU Unit must be used. CJ1 CPU Units do not support external interrupt tasks. To
activate external interrupt tasks in a CJ1-H CPU Unit, the CJ1W-CT021 High-speed Counter Unit must be in one of the five positions
immediately to the right of the CJ1-H CPU Unit. For CJ1M CPU Units, the CJ1W-CT021 High-speed Counter Unit must be in one of the three
positions immediately to the right of the CJ1M CPU Unit.
No
external interrupt tasks can be activated if the Unit is in any other position (i.e.,
6th Unit position or further away from the CJ1-H CPU Unit, or 4th Unit position or further away from the CJ1M CPU Unit), or if it is on a CJ-
series Expansion Rack.
Power Supply Unit
CJ1-H or CJ1M CPU Unit
For CJ1-H CPU Units: External interrupt tasks can
be
activated only from these Units.
For CJ1M CPU Units: External interrupt tasks can
be
activated only from these Units.
*3. If an IOWR- or IORD-instruction is used during operation, comparison will stop during instruction execution. Care must be taken, therefore,
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