Omron K3NC User manual

9
1
Up/Down Counting Meter K3NC
An Ideal Interface for High-Speed
Up/Down Counting and Serial
Communications
150-kHz input range for high-speed
signal processing
1A wide selection of outputs: relay,
transistor, BCD, linear, or
communications
1Prescale function available, which
displays in units of actual physical
parameters (length, volume, etc.)
1Auxiliary power supply (12 VDC, 80 mA)
1Banks with four set values and four
prescale values
1Five-stage comparative outputs
available
1NEMA4/IP66 front panel
1UL, CSA, and CE approved
Ordering Information
To order output and communication boards, refer to the separate K31 data sheet called
Output and Communication Boards
. See page 155.
3BASE UNIT
Model Supply voltage Applicable output boards Part number
y
g
Input type
NPN/Voltage pulse PNP
Basic model 100 to 240 VAC K31-C1/C2/C5
K31-T1/T2
K31-B2/B4
K31-L1/L2/L3/L4/L5/L6/
L7/L8/L9/L10
K
3
1
F
L
K
1
/
F
L
K
2
/
F
L
K
3
/
K3NC-NB1A K3NC-PB1A
Present value LED and front-panel control
keys. Can connect to any output board or,
without an output board, can be used for
display only.
12 to 24 VDC K31-FLK1/FLK2/FLK3/
FLK4/FLK5/FLK6 K3NC-NB2A K3NC-PB2A
Set value LED model 100 to 240 VAC K31-C1/C2/C3
K31-T1/T2
K31-B4
K31-L4/L5/L6/L9/L10
K
3
1
-
F
L
K
4
/
F
L
K
5
/
F
L
K
6
K3NC-NB1C K3NC-PB1C
Present value LED, set value LED, and front-
panel control keys. Can connect to relay,
transistor, or combination output boards.
12 to 24 VDC
K
3
1
-
F
L
K
4
/
F
L
K
5
/
F
L
K
6
K3NC-NB2C K3NC-PB2C
Note: Both models must be used with an output board in order for them to operate.

K3NC K3NC
2
3MODEL NUMBER LEGEND
K3NC - 1 234
Base Units
1, 2. Input Sensors Codes
NB: NPN inputs
PB: PNP inputs
3. Supply Voltage
1: 100 to 240 VAC
2: 12 to 24 VDC
4. Display
A: Basic Model
C: Set Value LED Display
Specifications
3RATINGS
Supply voltage 100 to 240 VAC (50/60 Hz); 12 to 24 VDC
Operating voltage range 85% to 110% of supply voltage
Power consumption (See Note.) 15 VA max. (max. AC load with all indicators lit)
10 W max. (max. DC load with all indicators lit)
Sensor power supply 80 mA at 12 VDC±10%
Insulation resistance 20 MΩmin. (at 500 VDC) between external terminal and case.
Insulation provided between inputs, outputs, and power supply.
Dielectric withstand voltage 2,000 VAC for 1 min between external terminal and case.
Insulation provided between inputs, outputs, and power supply.
Noise immunity ±1,500 V on power supply terminals in normal or common mode ±1µs, 100 ns for
square-wave noise with 1 ns
Vibration resistance Malfunction: 10 to 55 Hz, 0.5-mm for 10 min each in X, Y, and Z directions
Destruction: 10 to 55 Hz, 0.75-mm for 2 hrs each in X, Y, and Z directions
Shock resistance Malfunction: 98 m/s2(10G) for 3 times each in X, Y, and Z directions
Destruction: 294 m/s2(30G) for 3 times each in X, Y, and Z directions
Ambient
t
t
Operating --10 to 55°C (14 to 131°F) with no icing
temperature Storage --20 to 65°C(--4to149
°F) with no icing
Ambient humidity Operating 25% to 85% (with no condensation)
Ambient atmosphere Must be free of corrosive gas
EMC Emission Enclosure: EN55011 Group 1 class A
Emission AC Mains: EN55011 Group 1 class A
Immunity ESD: EN61000-4-2:4-kV contact discharge (level 2)
8-kV air discharge (level 3)
Immunity-RF-interference: ENV50140: 10 V/m (amplitude modulated, 80 MHz to
1GHz)(level3)
10 V/m (pulse modulated, 900 MHz)
Immunity Conducted Disturbance: ENV50141: 10 V (0.15 to 80 MHz) (level 3)
Immunity Burst: EN61000-4-4:2-kV power-line (level 3)
2-kV I/O signal-line (level 4)
Approved standards UL508, CSA22.2, CE; conforms to EN50081-2, EN50082-2, EN61010-1 (IEC1010-1);
conforms to VDE106/part 100 (Finger Protection) when the terminal cover is mounted.
Weight Approx. 400 g
Note: An Intelligent Signal Processor with DC supply voltage requires approximately 1 A DC as control power supply current the moment
the Intelligent Signal Processor is turned on. Do not forget to take this into consideration when using several Intelligent Signal
Processors. When the Intelligent Signal Processor is not in measuring operation (e.g., the Intelligent Signal Processor has been
just turned on or is operating for startup compensation time), the display will read “ööööö” and all outputs will be OFF.

K3NC K3NC
3
3CHARACTERISTICS
Input signal No-voltage contact (30 Hz max., ON/OFF pulse width: 15 ms min.)
Voltage pulse (50 kHz max., ON/OFF pulse width: 9 µs min., ON voltage: 4.5 to 30 V/OFF
voltage:
--30to2V)
Open collector (50 kHz max., ON/OFF pulse width: 9 µsmin.)
Connectable Sensors
ON residual voltage: 3 V max.
OFF leakage current: 1.5 mA max.
Load current
Transistor input: Must have switching capacity of 20 mA min.
Contact input: Must be able to dependably switch a load current of 5 mA max.
Input mode Up/Down B (individual inputs), Up/Down C (phase difference inputs)
Output mode ALL-H/ALL-L
Max. displayed digits 5 digits (--19999 to 99999)
Display 7-segment LED
Polarity display “--” is displayed automatically with a negative input signal.
Zero display Leading zeros are not displayed.
Prescale function Programming via front-panel key inputs. (0.0001 x 10-- 9 to 9.9999 x 109, decimal point can be
set freely)
Can be set using prescale value teaching.
External control RESET: 16 ms max. (external reset signal)
COMPENSATION: 16 ms max. (external compensation signal)
BANK 1, 2: 100 ms max. (bank switching time)
Up to 4 set value or prescale value banks available
Other functions Variable linear output range (for models with linear outputs only)
Remote/Local processing (available for communications output models only)
Counting value reset with front panel keys
Security
Memory power failure
Output configuration Relay contact output (5 outputs)
Transistor output (NPN and PNP open collector), BCD (NPN open collector)
Parallel BCD (NPN open collector) + transistor output (NPN open collector)
Linear output (4 to 20 mA, 1 to 5 V) + transistor output (NPN open collector)
Communication functions (RS-232C, RS-485, RS-422)
Communication functions (RS-232C, RS-485, RS-422) + transistor output (NPN open
collector)
Delay in comparative outputs 1 ms max. (at transistor output),
10 ms max. (at relay output)
Enclosure rating Front panel NEMA4 for indoor use (equivalent to IP66)
g
Rear case IEC standard IP20
Terminals IEC standard IP00
Memory protection Non-volatile memory (EEPROM) (possible to rewrite 100,000 times)

K3NC K3NC
4
En
g
ineerin
g
Data
3DERATING CURVE FOR SENSOR POWER SUPPLY
Max. current (mA)
Ambient temperature (°C)
Note: The derating curve shown is for standard installation.
The derating curve depends on the mounting direction.
Nomenclature
3K3NC
1. SV Display
2. PV Display
4. SV Display Status
5. ESC Key
6. Mode Key
7. Status Indicators
8. Teaching Indicator
9. RESET/TEACH Key
10. Up Key and Shift Key
OUT5
OUT4
OUT3
OUT2
OUT1
1 2 3
4 5OUT
3. Comparative Output
Status Indicators
Name Functions
1. SV display Displays the set value or parameter. Available for Set Value LED Models only.
2. PV display Displays the process value or parameter.
3. Comparative output
status indicators Displays the status of comparative output.
4. SV display status Indicates which comparative set value is currently on the SV display.
5. ESC Key Used to return to the RUN mode from the Setting, Protect or Maintenance mode.
6. Mode Key Used to enter the Setting mode.
Used to allow the PV display to indicate set values sequentially. Available for Basic Models only.
Used to indicate set values sequentially on the SV display. Available for Set Value LED Models only.
7. Status indicator RESET: Lit when the RESET input is ON.
PROG: Lit or flashes while parameters are being set.
8. Teaching indicator Lit when the teaching function is enabled and flashes when the Intelligent Signal Processor is in
teaching operation.
9. RESET/TEACH Key The counting value is reset by pressing this key.
Teaching is available when the teaching function is enabled.
10. Up Key and Shift Key The digit being set is scrolled by pressing the Shift Key. The set value increases by 1 whenever the up
keyispressed.

K3NC K3NC
5
Operation
3SETTING PROCEDURES
The K3NC has four modes: RUN mode for normal operations, Setting mode for initial parameter input, Protect mode for lock-out configu-
ration, and Maintenance mode for initializing set values. The parameters that are accessible on any individual K3NC will vary depending
on the Output Board installed. Refer to the
K3NC Operation Manual
for details.
RUN Mode: Remains in this mode under normal operation.
The process value can be monitored.
Using the front panel keys, the comparative set value can be changed and counting value reset can be performed.
Setting Mode: Used for making initial settings.
Includessettingsforfourmenus(Setvalue(,ç,â-),prescaling(),ä%),setup(,â-.)),option(()-))andtheoutputtest.
Protect Mode: Used for locking the front key operation or parameter changes.
Maintenance Mode: Used for initializing set values.
Power ON
RUN mode
Setting mode
Maintenance mode
Protect mode
1s
1s
+
+
ESC
ESC
ESC
ESC
When power is ON
,ç,â- - Program set values
,÷åæ'$ Select bank no. of set values
,çõ÷öõ Enter set value OUT1 of bank 1
,çõ÷öô Enter set value OUT2 of bank 1
,çõ÷öó Enter set value OUT3 of bank 1
,çõ÷öò Enter set value OUT4 of bank 1
,çõ÷öñ Enter set value OUT5 of bank 1
Note: The above is an example when the bank number is set to 1.
),ä% - Display prescaling
)÷åæ'$ Select bank no. of prescale values
),õ÷æ0 Set the mantissa (X) of the prescale value
),õ÷æ1 Set the exponent (Y) of the prescale value
ãâä)÷õ Select decimal point
Note: The above is an example when the bank number is set to 1.
)+(- - Program lock-out configuration
æ%% Enable all key protection
,ç,â- Enable set value change prohibition
+â,â- Enable prohibition of counting value reset using
the front panel keys
,âä+ Specify the menus to be protected against set-
ting in the setting mode
,â-.) - Program input mode/input sensor/serial communications
ä(.'- Specify input mode
"' Select a sensor type
.ø'( Enter the unit no. for the host
å), Select the baud rate
%â' Select the word bit length
,å"- Select the stop bits
)+-1 Select the parity bits
()- - Supplementary settings related to display or control
&â&( Select power failure memory function
ä(&)' Set compensation value
ä('ø) Select conditions thatallowcompensationinput
(.- Select output mode
%,â-÷! Enter the upper limit (H) of linear output range
%,â-÷% Enter the lower limit (L) of linear output range
+ø% Select the remote/local programming
-â,- -Generatingsimulatedinputfortestingtheoutputfunction

K3NC K3NC
6
3PARAMETERS
Linear Output Range %,â-
A linear output range can be set as required. A value
corresponding to the maximum output value and that
corresponding to the minimum output value can be set.
Display
20 mA
4mA
Upper
limit
Output
Lower
limit
For the 4- to 20-mA
output type
Remote/Local Selection +ø%
Select remote programming when performing all settings through
the host devices and select local programming when performing
settings through key operation.
Prescaling
The prescale function makes it possible to convert the counting
value of the K3NC into an appropriate value.
For example, the system shown in the illustration outputs 250
pulses when the object is advanced 0.5 m. To enable the K3NC
to display PPPP.P(mm), obtain the advanced length of the
object per pulse from the following formula.
500 mm (0.5 m)/250 = 2
1. The prescale value is set by the mantissa X multiplied by the
exponent Y as follows:
Prescale value = 2.0000 x 100
X = 2.0000, Y = 00
2. Set the decimal point to the left of the rightmost digit.
0.5 m
250
pulses
Encoder
K3NC
3TERMINAL ARRANGEMENT
18 19 20 21 22 23 24 25 26
10 11 12 13 14 15 16 17
1 2 3 4 5 6 7 8 9
Terminal Numbers
Note: Terminals 7 to 13 are connected internally.
Output
unit
Input
unit
Output unit
Input unit
3INPUT UNIT
Note: Terminals 7 and 13 are insulated
from each other.
Power supply
12 VDC
(80 mA max.)
Signal input terminals

K3NC K3NC
7
K3NC-NB
(NPN input/voltage pulse input) K3NC-PB (PNP input)
+
12 V
Contact
NPN output sensor Voltage output PNP output sensor
+12 V 0V
0V +12 V 0V
3ROTARY ENCODER CONNECTION EXAMPLE
0V
Phase A
Phase B
INA/INB Counts input signals.
Accepts Up/Down (individual or phase difference) inputs.
RESET Resets the present value to zero.
No counting inputs are accepted when a RESET input is ON.
RESET is lit when a RESET input is ON.
Note: External reset minimum signal width: 16 ms
COMPENSATION Resets the present counting value to the compensation value at the rising edge of a compensation input.
In the compensation value setting parameter, it is possible to set to “Effective during incrementing and
decrementing a count” or to “Effective only during incrementing a count.”
Note: External compensation input minimum signal width: 16 ms
BANK 1, 2 Selects one of the four banks.
,
Bank no. Control input
Bank 1 Bank 2
1OFF OFF
2ON OFF
3OFF ON
4ON ON
Note: Bank switching minimum signal width: 100 ms max.

K3NC K3NC
8
3OUTPUT OPERATION TIMING IN RUN MODE (RELAY AND TRANSISTOR OUTPUTS)
The K3NC can output the results of Up/Down counting as comparative outputs.
The output mode can be set to the ALL-H mode or the ALL-L mode.
ALL-H
If the ALL-H output mode is selected, outputs 1 to 5 will be
ON when the measured value exceeds set values 1 to 5.
ALL-L
If the ALL-L output mode is selected, outputs 1 to 5 will be
ON when the measured value is less than set values 1 to 5.
Note: Set value 2 < compensation value < set value 3 Note: Set value 2 < compensation value < set value 3
Measured value
Set value 5
Set value 4
Set value 3
Set value 2
Set value 1
Reset
Compensation
value
Output 5
Output 4
Output 3
Output 2
Output 1
Measured value
Set value 5
Set value 4
Set value 3
Set value 2
Set value 1
Reset
Compensation
valueOutput 5
Output 4
Output 3
Output 2
Output 1
See Note. See Note.
While the reset signal is ON, the counting value will return to zero.
When the compensation signal is ON, the K3NC will be in counting operation starting with the preset compensation value. Depending on
the setting conditions, the compensation value will be effective only for the incrementing operation.
3OUTPUT DELAY (REFERENCE VALUE)
The following table shows the time required for a K3NC in a system to go into reverse output operation after the counting value reaches
the value preset with the K3NC, and is due to the output processing time of the K3NC, signal transmission time of the system, and the
relay connected to the K3NC.
Control I/O Output or response delay time
Relay contact output 3.0 to 10.0 ms
NPN/PNP transistor output 0.1to0.6ms
Reset input 12.0 to 16.0 ms
Compensation input 12.0 to 16.0 ms
Bank switch 60.0 to 100.0 ms
Note: Output delay time varies with the operating environment. If the output delay time will possibly have a serious influence on your
system, check the actual output delay time before applying the K3NC to the system.

K3NC K3NC
9
3INPUT MODE AND COUNTING VALUES
.øã å : Up/Down B individual input .øã ä : Up/Down C phase difference input
Counting
value
INA
INB
Counting
value
INA
INB
Note: 1. “B” must be larger than half the minimum signal width. If it is smaller, an error of ±1 count may occur.
2. Refer to the following for the meanings of the H and L characters in the above timing charts.
Signal No-voltage input
HShort-circuit
LOpen
3BLOCK DIAGRAM
Input circuit
Power supply
for sensor
Sensor A
Sensor B
GND
Control input Control input
circuit
Power supply
circuit
Control power
supply
Waveform
adjustment
circuit
Voltage stabilizing
circuit
Voltage stabilizing
circuit
Voltage stabilizing
circuit
Key
switch LED
Output
circuit
8-bit
microcomputer
Frequency
measurement
circuit
Power supply for
sensor (input circuit)
Frequency measurement circuit
Waveform adjustment circuit
8-bit microcomputer
Control input circuit

K3NC K3NC
10
Dimensions
Unit: mm (inch)
3K3NC
Panel Cutouts
92
14.2
8.2
PV Display
OUT5
OUT4
OUT3
OUT2
OUT1
RESET
OUT
123
45
91
(3.58)
44
(1.73)
96 (3.78)
112 (4.41)
48
(1.89)
90
(3.54)
2.2
(0.09)
43
(1.69)
12.4
(0.49) 130 (5.12)
75 min
(2.95)
120 min.
(4.72)
45 (1.77)
30
(1.18)
70.5
(2.78)
46.5
(1.83)
42