K3NC Data Sheet
Up/Down Counting Meter
K3NC
Counters
An Ideal Interface for High-speed Up/Down
Counting and Serial Communications
• 50-kHz input range for high-speed signal processing.
• A wide selection of outputs: relay, transistor, BCD, linear, or
communications.
• Prescale function available, which displays in units of actual
physical parameters (length, volume, etc.).
• Built-in sensor power supply (12 VDC, 80 mA).
• Banks with four set values and four prescale values.
• Five-stage comparative outputs available.
• Compact 1/8 DIN size.
• Conforms to EMC standards, EN61010-1 (IEC1010-1).
• UL/CSA approved.
®
Model Number Structure
■ Model Number Legend
Base Units and Output Boards can be ordered individually or as sets. Refer to the Output Board Combinations table on page 130.
Output Boards
K31 -
Base Units
K3NC 1
2
3
4
5
6
1, 2. Input Sensors Codes
NB: NPN inputs/Voltage pulse inputs
PB: PNP inputs
3. Supply Voltage
1:
100 to 240 VAC
2:
12 to 24 VDC
4. Display
A:
Basic
C:
Set Value LED Display
5, 6, 7, 8. Output Type Codes
C2: 5 comparative relay contact outputs (OUT1, 2, 4, 5: SPSTNO; OUT3: SPDT)
C5: 5 comparative relay contact outputs (OUT1, 2, 4, 5: SPSTNC; OUT3: SPDT)
T1: 5 comparative transistor outputs (NPN open collector)
T2: 5 comparative transistor outputs (PNP open collector)
B2: BCD output (NPN open collector) (see note)
B4: BCD output + 5 transistor outputs (NPN open collector)
L1: Linear output (4 to 20 mA) (see note)
Base Units with Output Boards
K3NC 7
8
1
2
3
4
5
6
7
8
L2:
L3:
L4:
Linear output (1 to 5 VDC) (see note)
Linear output (1 mV/10 digits) (see note)
Linear output, 4 to 20 mA + 5 transistor outputs (NPN open
collector)
L5: Linear output, 1 to 5 V + 5 transistor outputs (NPN open collector)
L6: Linear output, 1 mV/10 digits+ 5 transistor outputs (NPN
open collector)
L7: Linear output, 0 to 5 VDC (see note)
L8: Linear output, 0 to 10 VDC (see note)
L9: Linear output, 0 to 5 VDC + 5 transistor outputs (NPN open
collector)
L10: Linear output, 0 to 10 VDC + 5 transistor outputs (NPN open
collector)
FLK1: Communication RS-232C (see note)
FLK2: Communication RS-485 (see note)
FLK3: Communication RS-422 (see note)
FLK4: RS-232C + 5 transistor outputs (NPN open collector)
FLK5: RS-485 + 5 transistor outputs (NPN open collector)
FLK6: RS-422 + 5 transistor outputs (NPN open collector)
Note: These output types are available on Basic Models only.
Up/Down Counting Meter
K3NC
C-129
Ordering Information
■ Base Unit
Input type
NPN/Voltage pulse
Supply voltage
100 to 240 VAC
12 to 24 VDC
PNP
100 to 240 VAC
12 to 24 VDC
Basic Models
These models provide a present
value LED and front-panel control
keys. Can be connected to any
Output Board, or can be used for
display only without an Output
Board.
K3NC-NB1A
K3NC-NB2A
K3NC-PB1A
K3NC-PB2A
Set Value LED Models
These models provide a
present value LED, set value
LED, and front-panel control
keys. Can be connected to
Relay, Transistor, or
Combination Output Boards.
K3NC-NB1C
K3NC-NB2C
K3NC-PB1C
K3NC-PB2C
■ Available Output Board Combinations
Output type
Output configuration
Output boards
Base units
Basic
Relay contact
Transistor
Set Value
LED Display
5 outputs: OUT1, 2, 4, 5 (SPST-NO), and OUT3 (SPDT)
K31-C2
Yes
Yes
5 outputs: OUT1, 2, 4, 5 (SPST-NC), and OUT3 (SPDT)
K31-C5
Yes
Yes
5 outputs (NPN open collector)
K31-T1
Yes
Yes
5 outputs (PNP open collector)
K31-T2
Yes
Yes
BCD (see note)
5-digit output (NPN open collector)
K31-B2
Yes
---
Linear
4 to 20 mA DC
K31-L1
Yes
---
1 to 5 VDC
K31-L2
Yes
---
1 mV/10 digits
K31-L3
Yes
---
0 to 5 VDC
K31-L7
Yes
---
0 to 10 VDC
K31-L8
Yes
---
RS-232C
K31-FLK1
Yes
---
RS-485
K31-FLK2
Yes
---
RS-422
K31-FLK3
Yes
---
BCD output + 5 transistor outputs (NPN open collector)
K31-B4
Yes
Yes
4 to 20 mA + 5 transistor outputs (NPN open collector)
K31-L4
Yes
Yes
Communication boards
(see note)
Combination output and
communication boards
1 to 5 V + 5 transistor outputs (NPN open collector)
K31-L5
Yes
Yes
1 mV/10 digits + 5 transistor outputs (NPN open collector)
K31-L6
Yes
Yes
0 to 5 VDC + 5 transistor outputs (NPN open collector)
K31-L9
Yes
Yes
0 to 10 VDC + 5 transistor outputs (NPN open collector)
K31-L10
Yes
Yes
RS-232C + 5 transistor outputs (NPN open collector)
K31-FLK4
Yes
Yes
RS-485 + 5 transistor outputs (NPN open collector)
K31-FLK5
Yes
Yes
RS-422 + 5 transistor outputs (NPN open collector)
K31-FLK6
Yes
Yes
Note: For details, refer to the Communication Operation Manual.
C-130
Up/Down Counting Meter K3NC
Specifications
■ Ratings
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 MΩ min. (at 500 VDC) between external terminal and case.
Insulation provided between inputs, outputs, and power supply.
Dielectric strength
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 ±1 µs, 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 for 3 times each in X, Y, and Z directions
Destruction: 294 m/s2 for 3 times each in X, Y, and Z directions
Ambient temperature
Operating:
Storage:
−10°C to 55°C (with no icing)
−20°C to 65°C (with no icing)
Ambient humidity
Operating:
25% to 85% (with no condensation)
EMC
(EMI)
Emission Enclosure:
Emission AC Mains:
(EMS)
Immunity ESD:
EN61326+A1
Industry
CISPR 11 Group 1 class A: CISRP16-1/-2
CISPR 11 Group 1 class A: CISRP16-1/-2
EN61326+A1
Industry
EN61000-4-2:
4 kV contact discharge (level 2)
8 kV air discharge (level 3)
Immunity RF-interference:
EN61000-4-3:
10 V/m (amplitude-modulated,
80 MHz to 1 GHz) (level 3)
Immunity Fast Transient Noise: EN61000-4-4:
2 kV (power line) (level 3)
Immunity Burst Noise:
1 kV line to line (I/O signal line)
Immunity Surge:
EN61000-4-5:
1 kV line to line
2 kV line to ground (power line)
Immunity Conducted Disturbance EN61000-4-6:
3 V (0.15 to 80 MHz) (level 2)
Immunity Voltage Dip/Interrupting EN61000-4-11:
0.5 cycles, 0, 180°, 100% (rated voltage)
Approved standards
UL508, CSA22.2;
Conforms to EN61326+A1, EN61010-1 (IEC61010-1)
Conforms to VDE0106/P100 (finger protection) when the terminal cover is mounted.
Weight
Approx. 400 g
Counters
Supply voltage
Note: A K3NC with DC supply voltage requires approximately 1 A DC as control power supply current the moment the K3NC is turned ON. Do not
forget to take this into consideration when using several K3NC units. When the K3NC is not in measuring operation (e.g., the K3NC has
been just turned ON or is operating for startup compensation time), the display will read “00000” and all outputs will be OFF.
Up/Down Counting Meter
K3NC
C-131
■ Characteristics
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: −30 to 2 V)
Open collector (50 kHz max., ON/OFF pulse width: 9 µs min.)
Connectable Sensors
ON residual voltage: 3 V max.
OFF leakage current: 1.5 mA max.
Load current:
Must have switching capacity of 20 mA min.
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)
Linear output response time 20 ms max.
Degree of protection
Front panel: NEMA4 for indoor use (equivalent to IP66)
Rear case: IEC standard IP20
Terminals: IEC standard IP00
Memory protection
Non-volatile memory (EEPROM) (possible to rewrite 100,000 times)
■ Input/Output Ratings
Relay Contact Output
(Incorporating a G6B Relay)
Item
Resistive load (cosφ = 1)
Inductive load (cosφ = 0.4, L/R = 7 ms)
Rated load
5 A at 250 VAC; 5 A at 30 VDC
Rated carry current
5 A max. (at COM terminal)
Max. contact voltage
380 VAC, 125 VDC
Max. contact current
5 A max. (at COM terminal)
Max. switching capacity
1,250 VA, 150 W
Min. permissible load
(P level, reference value)
10 mA at 5 VDC
Mechanical life
50,000,000 times min. (at a switching frequency of 18,000 times/hr)
Electrical life
(at an ambient temperature of 23°C)
100,000 times min. (at a rated load switching frequency of 1,800 times/hr)
Transistor Output
Rated load voltage
12 to 24 VDC +10%/-15%
Max. load current
50 mA
Leakage current
100 µA max.
C-132
Up/Down Counting Meter K3NC
1.5 A at 250 VAC, 1.5 A at 30 VDC
375 VA, 80 W
BCD Output
I/O signal name
Outputs
Item
REQUEST, COMPENSATION, RESET
Rating
Input signal
DATA, POLARITY, OVERFLOW, DATA VALID,
RUN
No-voltage contact input
Input current with no-voltage input
10 mA
Signal level
ON voltage: 1.5 V max.
OFF voltage: 3 V min.
Rated load voltage
12 to 24 VDC +10%/-15%
Max. load current
10 mA
Leakage current
100 µA max.
Counters
Inputs
Note: Logic method: negative logic
Linear Output
Item
4 to 20 mA
Resolution
4,096
Output error
±0.5% FS
Permissible load resistance
600 Ω max.
1 to 5 V
1 mV/10 digits (see note)
±1.5% FS
500 Ω min.
1 KΩ min.
Note: For the 1 mV/10-digit output, the output voltage changes for every 40 to 50 increment in the display value.
■ Communications Specifications
Item
RS-232C, RS-422
RS-485
Transmission method
4-wire, half-duplex
Synchronization method
Start-stop synchronization
Baud rate
1,200/2,400/4,800/9,600/19,200/38,400 bps
Transmission code
Communications
2-wire, half-duplex
ASCII (7-bit)
Write
Comparative set value, prescaling value, remote/local programming, reset control, and other setting
mode items excluding communications conditions.
Read
Process value, comparative set value, model data, error code, and others
For details, refer to Communication Operation Manual.
Up/Down Counting Meter
K3NC
C-133
Connections
■ Terminal Arrangement
Terminal Numbers
Output unit
Output
unit
18 19 20 21 22 23 24 25 26
10 11 12 13 14 15 16 17
Input
unit
1
2
3
4
5
6
7
8
9
Note: Terminals 7 to 13 are connected internally.
Terminals 7 and 11 are mutually isolated.
Input unit
Input Unit
Voltage Pulse Inputs
PNP-input Models
External
sensor
power
10
supply (+)
+12 V
Input B
820 Ω
1
+12 V
590 Ω
+12 V
GND
590 Ω
820 Ω
2
External
sensor 11
power
supply (−)
Input A
10 k Ω
3
590 Ω
820 Ω
Input A
GND
+12 V
Input B
10 k Ω
4
590 Ω
820 Ω
Input B
11
NPN Open Collector Output
(NPN Linear 2-wire Output)
1
820 Ω
GND
2
820 Ω
External
sensor
11
power
supply (−)
GND
GND
+12 V
590 Ω
+12 V
Internal circuits
Input A
+12 V
Internal circuits
External
sensor 10
power
supply (+)
Contact Output
590 Ω
Internal circuits
NPN Inputs
GND
GND
Voltage Output
PNP Open Collector Output
Input resistance: 10 kΩ
10
10
1
1
+12 V
INA
10
11
10
11
11
2
3
4
INA
2
3
INB
4
+12V
GND
INB
1
2
3
1
4
+12V
INA INB
0V
INA
11
2
3
4
INB
0V
0V
Contact
NPN output sensor
Note: When the contact is shortcircuited, a current of approximately 13 mA will flow at a voltage of approximately 12 V.
Note: Connect the + side of the NPN
linear 2-wire input to terminal 1
and the − side to terminal 11.
C-134
Up/Down Counting Meter K3NC
Voltage pulse output sensor
Note: With voltage pulse input
not from a 3-wire sensor,
connect the + side to terminal 3 and the − side to
terminal 11.
PNP output sensor
Output Unit
K31-C1: Relay (3 Outputs)
K31-C2: Relay (5 Outputs)
Outputs (5 A max. at 250 VAC)
18
PASS
19
20
21
Outputs (5 A max. at 250 VAC)
L
22
23
24
H
HH
25
26
K31-C5: Relay (5 Outputs)
18
LL
PASS
19
20
21
L
22
23
24
25
26
Counters
H
K31-T1: Transistor (NPN Open Collector)
Outputs (5 A max. at 250 VAC)
H
Outputs (50 mA max. at 24 VDC)
LL
HH
PASS
L
18
19
20
21
22
23
24
25
20
HH
H
PASS
L
LL
COM
21
22
23
24
25
26
104
4 8
K31-L1, L2, L3,-L4, -L5, -L6, -L7, -L8, -L9,
-L10: Linear
(Terminals 21 to 26 are provided only on K31-L4,
-L5, -L6, -L9, -L10.)
L1, L4: 4 to 20 mA
L2, L5: 1 to 5 V
L3, L6: 1 mV/10 digit
L7, L9: 0 to 5 VDC
L8, L10: 0 to 10 VDC
+
−
18
19
20
L
LL
COM
23
24
25
26
K31-B2, -B4: BCD (NPN Open Collector)
(Terminals 32 to 36 are provided only on K31-B4.
Outputs (50 mA max. at 24 VDC)
19
PASS
22
26
K31-T2: Transistor (PNP Open Collector)
18
H
21
20
DATA OVERFLOW
DATA VALID
RUN
COMMON
REQUEST
MAX. REQ.
MIN. REQ.
HOLD
RESET
POLARITY
HH
H
PASS
L
LL
COMMON
18
19
HH
20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19
1 2 4 8 1 2 4 8 1 2 4 8 1 2 4 8 1 2
100
COMMON
101
102
103
104
Outputs (50 mA max. at 24 VDC)
HH
H
PASS
L
LL
COM
21
22
23
24
25
26
K31-FLK1: RS-232C
14 15 16 17 18 19 20 21 22 23 24 25
2
3
4
5
6
K31-FLK3, -FLK6: RS-422
(The right connector is provided only on K31-FLK6)
PASS
L
LL
COM
22
23
24
25
26
Terminator
ON
6 7 8 9
1 2 3 4 5
6 7 8 9
1 2 3 4 5
K31-FLK4: RS-232C + Transistor (NPN Open Collector)
Output NPN Tr.
(50 mA max. at 24 VDC)
LL
RS-232C
9 8 7 6
5 4 3 2 1
SG
• D-sub 37P Connectors for BCD output (attachment)
Plug: XM2A-3701
Hood: XM2S-3711
• D-sub 25P connectors for RS-232C output (K31-FLK1) (order
separately)
Plug: XM2A-2501
Hood: XM2S-2511
• D-sub 9P connectors for RS-422 output (K31-FLK3 and K31FLK6) (order separately)
Plug: XM2A-0901
Hood: XM2S-0911
• D-sub 9P connectors for RS-232C output (K31-FLK4) (order
separately)
Plug: XM2D-0901
Hood: XM2D-0911
SG
RDB
OFF
LL
H
21
HH
H
COM
PASS
L
HH
20
9 8 7 6
5 4 3 2 1
L
PASS
COM
H
HH
Outputs (50 mA max. at 24 VDC)
SDA
ON
OFF
SDB
19
RDA
RS-485
−
Output NPN Tr.
(50 mA max. at 24 VDC)
RS-422
Terminator
18
9 10 11 12 13
With K31-L4/-L5/-L6/-L9/-L10 models, terminals
19 and 26 are connected internally.
K31-FLK2, -FLK5: RS-485
(Terminals 21 to 26 are provided only on K31-FLK5.)
+
8
SD
RD
Note:
7
SG
SD
RD
1
Up/Down Counting Meter
K3NC
C-135
■ Block Diagram
Key
switch
Power supply
for sensor
Sensor A
Sensor B
GND
Input circuit
Control input Control input
circuit
Frequency
measurement
circuit
8-bit
microcomputer
Power supply
circuit
Output
circuit
Waveform
adjustment
circuit
Voltage stabilizing
circuit
Control power
supply
LED
Power supply for
sensor (input circuit)
Voltage stabilizing
circuit
Frequency measurement circuit
Waveform adjustment circuit
8-bit microcomputer
Voltage stabilizing
circuit
Control input circuit
■ Rotary 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
OFF
OFF
2
ON
OFF
3
OFF
ON
4
ON
ON
Note: Bank switching minimum signal width: 100 ms max.
C-136
Bank 2
1
Up/Down Counting Meter K3NC
Operation
Linear Output Range lset
Remote/Local Selection r-l
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.
Select remote programming when performing all settings through the
host devices and select local programming when performing settings
through key operation.
20 mA
Output
For the 4- to 20-mA
output type
4 mA
Lower
limit
Upper
limit
Display
■ BCD Output Timing Chart
A request signal from an external device (such as a Programmable Controller) is required to read BCD data.
Single Sampling Data Output
Pulse with a width of no less than 20 ms.
(no more than 50 ms.)
REQ.
DATA
All data "high"
Data
All data "high"
DATA
VALID
40 ms
16 ms
Approx. 30 ms
Approximately 30 ms after the REQ signal rises, a sample is taken and the DATA VALID signal is output. Read the data when the DATA VALID
signal is ON.
The DATA VALID signal will turn OFF in 40 ms, and then in 16 ms, the data will go OFF.
Models with a BCD output have an open collector output configuration so that wired-OR connection is possible.
REQ.
(1)
K3NC (1)
Programmable
controller
REQ.
(2)
REQ.
(3)
K3NC (2)
DATA (incl. POL and OVER)
and DATA VALID are wired-OR
processed.
The RUN, OUT5, OUT4,
OUT3, OUT2, and OUT1 signals are always output regardless of the status of the REQ
signal. Do not OR-wire these
signals.
K3NC (3)
DATA
(1)
(3)
(2)
DATA
VALID
*
*
*
*The period between the DATA VALID signal and the
REQ signal should be no less than 20 ms max.
Continuous Data Output
The K3NC outputs each measurement at an interval of 64 ms when
a REQ signal is ON continuously.
REQ.
DATA All data "high"
Data 1
Data 2
DATA
VALID
40ms
Approx.
30 ms
64ms
40ms
24ms
64ms
24ms
Up/Down Counting Meter
K3NC
C-137
Counters
■ Main Functions
Example of Connection to Programmable Controller
K3NC
PC (SYSMAC)
DC Input Unit
1. COMMON
2. 1
COM
IN
3. 2
IN
0
IN
5. 8
IN
Internal circuit
10
4. 4
23. DATA VALID
24. RUN
IN
IN
25. COMMON
Transistor Output Unit
26. REQUEST
OUT
30. RESET
OUT
240 Ω
240 Ω
240 Ω
31. POLARITY
(Polarity: +, −)
Internal circuit
+5 V
Internal circuit
240 Ω
COM
(0 V)
24 VDC
+24 V
DC power supply*
0V
C-138
Up/Down Counting Meter K3NC
* Recommended
power supply;
eg. OMRON S8VS
Example of Connection to Display Unit
K3NC
1.COMMON
2.1
3.2
Counters
100
4.4
5.8
23.DATA VALID
24.RUN
101
102
25.COMMON
26.REQUEST
+5V
Connected
240 Ω
240 Ω
240 Ω
31.POLARITY
(Polarity: +, −)
V
O
D
C
B
A
DP
LE
V
O
D
C
B
A
DP
LE
V
O
D
C
B
A
DP
LE
V
O
30.RESET
240 Ω
8
8
8
SEC
[email protected] or [email protected]
M7E Digital Display Unit
Up/Down Counting Meter
K3NC
C-139
■ Output 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
ALL-L
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.
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.
Measured value
Set value 5
Measured value
Set value 5
Set value 4
Set value 4
Set value 3
See note
Set value 2
Set value 3
See note
Set value 2
Set value 1
Set value 1
Reset
Reset
Compensation
value
Compensation
value
Output 5
Output 5
Output 4
Output 4
Output 3
Output 3
Output 2
Output 2
Output 1
Output 1
Note: Set value 2 < compensation value < set value 3
While the reset signal is ON, the counting value will return to zero.
Note: Set value 2 < compensation value < set value 3
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.
■ Output 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
0.1 to 0.6 ms
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.
■ Input Mode and Counting Values
u-d b : Up/Down B individual input
u-d c : Up/Down C phase difference input
INA
INA
INB
INB
Counting
value
Counting
value
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
H
Short-circuit
L
Open
C-140
Up/Down Counting Meter K3NC
Nomenclature
1. SV Display
2. PV Display
7. Status Indicators
OUT5
OUT3
OUT2
4. SV Display Status
Counters
OUT4
3. Comparative Output
Status Indicators
OUT1
1
OUT
2
3
4
5
8. Teaching Indicator
5. ESC Key
9. RESET/TEACH Key
6. Mode Key
10. Up Key and Shift Key
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 K3NC 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 one whenever the Up Key is
pressed.
Up/Down Counting Meter
K3NC
C-141
Engineering Data
Max. current (mA)
Derating Curve for Sensor Power Supply
Note: The derating curve shown is for standard installation.
The derating curve depends on the mounting direction.
Ambient temperature (°C)
C-142
Up/Down Counting Meter K3NC
Dimensions
Note: All units are in millimeters unless otherwise indicated.
Panel Cutouts
PV Display
14.2
92+0.8
−0
75
8.2
RESET
OUT5
OUT4
OUT3
OUT2
OUT1
1
2
3
OUT
4
5
120
Note: The K3NC uses M3.5 terminals.
A terminal cover is provided.
Up/Down Counting Meter
K3NC
C-143
Counters
45+0.8
−0
Precautions
!WARNING
Do not touch any of the terminals while the power is being supplied. Doing so may result in electric shock.
!Caution
Do not allow metal objects or conductive wire cuttings to enter the
product. Doing so may result in electric shock, fire, or malfunction.
!Caution
Do not attempt to take the product apart or touch any internal parts
while the power is being supplied. Doing so may result in electric
shock.
!Caution
Do not use the product in locations subject to flammable or explosive gases. Doing so may result in explosion.
!Caution
The lifetime of output relays varies greatly with the switching capacity and conditions. Consider the actual operating conditions,
and use the relays within the rated load without exceeding the
number of operations specified as the rated electrical life. Using
relays beyond their rated electrical life may result in contact deposit or burning.
!Caution
Do not use loads exceeding the rated value. Doing so may result
in damage or burning.
!Caution
Use a power supply voltage within the specified range. Not doing
so may result in damage or burning.
!Caution
Use settings that are appropriate for the control system. Discrepancies between the settings and the actual control conditions may
result in unexpected operation leading to damage or accidents.
!Caution
Be sure to tighten terminal screws to the specified torque.
Specified torque for M3.5 screws: 0.74 to 0.90 N·m
Loose screws may result in burning or malfunction.
■ Application Precautions
• Use a power supply voltage within the specified range. Not doing
so may result in damage or burning.
• Be sure to perform wiring correctly, verifying the terminal names.
Incorrect wiring may result in burning.
• Be sure to tighten the screws on the terminal block properly.
• Do not connect anything to unused terminals.
■ Correct Use
Long-term Use
Use all products within the specified ranges. When using inside a
control panel, ensure that the temperature around the product, rather
than the temperature around the control panel, does not exceed the
specified temperature range. Electronic products, such as this product, have a lifetime that is dependent on the lifetime of internal electronic components, as opposed to the lifetime related to the number
of relay switching operations. The lifetime of these components varies with the temperature; the higher the temperature, the shorter the
lifetime. Therefore, the product lifetime can be extended by lowering
the internal temperature of the product.
When several Counting Meters are mounted close together (either
horizontally or vertically), the internal temperature of the Counting
Meters may rise, leading to a reduction in the lifetime. In this case,
take measures to cool the Counting Meters, such as installing fans.
Ensure, however, that the terminals are not cooled as this may lead
to incorrect measurement.
Operating Environment
Do not use the product in locations subject to temperatures or humidity levels above the specified ranges, or in locations subject to condensation.
Do not use the product in locations subject to severe shocks or vibrations.
Separate the product from machines that generate high-frequency
noise, such as high-frequency welding machines and high-frequency
sewing machines.
Do not use the product in locations subject to dust or corrosive
gases.
Do not use the product outdoors or in locations subject to direct sunlight.
Operation
When using models with comparative outputs, if an error occurs at
the Counting Meter, comparative output may not operate correctly.
We therefore recommend that you consider providing an alarm system separately as a countermeasure.
Parameter settings that allow the functions to operate properly are
made, using the setting menu, at the factory prior to delivery. When
using the product, change the settings as required for the application.
Mounting
Recommended panel thickness is 1 to 3.2 mm.
Panel
C-144
Up/Down Counting Meter K3NC
Attach the mounting bracket on the left and right sides of the Counting Meter as shown in the illustration above and gradually tighten
each screw evenly in turn by considering the balance of the tightening force until the ratchets start slipping without being further tightened.
Unit Label (Provided)
No product is shipped with the unit label attached. Select a unit label
from the sheet provided and attach it to the Counting Meter.
Mount the Counting Meter as horizontally as possible.
Waterproof Specifications
Counters
Products for which the degree of protection is not specified or models
with [email protected] degree of protection do not have waterproof specifications.
Noise Countermeasures
Separate the product as far as possible from machines that generate
high-frequency noise, such as high-frequency welding machines and
high-frequency sewing machines, and machines that generate
surges.
Attach surge absorbers or noise filters to noise-generating peripheral
devices (in particular, devices with inductance such as motors, transformers, solenoids, and magnet coils).
Signal
input
+
−
K3NC
K3NC
Power input
Power input
Line filter
Surge absorber
In order to prevent inductive noise, wire the lines connected to the
terminal block separately from power lines carrying high voltages or
large currents. Also, do not wire in parallel to, or in the same cable as
power lines. There are other methods that are effective for reducing
noise, such as running wires along ducts and using shield lines.
When using a noise filter for the power supply, check the voltage and
current and install as close to the Counting Meter as possible.
Inductive Noise Countermeasure for Input
Line
Analog Input
+
Signal
input
Processor
−
Two-conductor shield wire
Temperature Input
In order to prevent the influence of induction, separate the lead wire
joining the temperature sensor and the Counting Meter from power
and load lines.
Using the product near radios, television sets, or other wireless
devices may result in reception interference.
Up/Down Counting Meter
K3NC
C-145
Operating Procedures
■ Operation in RUN Mode
Reset
Bank Selection
BANK1
RESET for 1 s min. to reset the counting
Press the RESET/TEACH Key /TEACH
value to 0. (Enabled when key protection is cleared.)
Measurement
value
BANK2
RESET
/TEACH
0
1 s min.
COM
• Switch between the comparative set values and the prescaling values for banks 1 to 4 using the BANK 1 and BANK 2 signals.
• The relationship between the BANK 1 and BANK 2 signals and the
bank numbers is shown in the following table.
Checking the Bank Number
Press the Shift Key
for 1 s min. during measurement to display
the bank number in the PV display. (The display will return to the
measurement value if there is no key operation for 5 seconds.)
Bank
number
BANK 1
BANK 2
Comparat Prescaling
ive set
value
value
1
OFF
OFF
sU1.**
ps1.**
2
ON
OFF
sU2.**
ps2.**
3
OFF
ON
sU3.**
ps3.**
4
ON
ON
sU4.**
ps4.**
Note: If the prescale value bank is set to OFF, then the prescaling value for each bank is fixed.
Confirming and Setting Comparative Set Values
During measurement display, press the Mode Key
repeatedly to display the comparative set values in the order OUT1, OUT2, OUT3, OUT4,
and OUT5. (With models that have an SV display, the comparative set values are displayed in the SV display.)
Measurement
value
Comparative set
value OUT1
Comparative set
value OUT2
No key operation for 5 s
Comparative set
value OUT3
No key operation for 5 s
No key operation for 5 s
Note: When a comparative set value is displayed, it can be changed using the Up Key
C-146
Up/Down Counting Meter K3NC
Comparative set
value OUT4
Comparative set
value OUT5
No key operation for 5 s
and Shift Key
No key operation for 5 s
(if key protection is OFF).
■ Setting Procedures
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.
Includes settings for four menus (Set value (sUset), prescaling (pscl), setup (setup), option (opt)) and the output test.
Protect Mode:
Used for locking the front key operation or parameter changes.
Maintenance Mode:
Used for initializing set values.
When power is ON
+
Power ON
Maintenance mode
ESC
RUN mode
ESC
+
1s
1s
ESC
ESC
Protect mode
Setting mode
sUset - Program set values
s.bank
sU*.01
sU*.02
sU*.03
sU*.04
sU*.05
Select bank no. of set values
Enter set value OUT1 of bank 1
Enter set value OUT2 of bank 1
Enter set value OUT3 of bank 1
Enter set value OUT4 of bank 1
Enter set value OUT5 of bank 1
reset
secr
Enable prohibition of counting value reset using the front
panel keys
Specify the menus to be protected against setting in the
setting mode
Note: The above is an example when the bank number is set to 1.
pscl - Display prescaling
p.bank
ps*.ax
ps*.ay
decp.*
Select bank no. of prescale values
Set the mantissa (X) of the prescale value
Set the exponent (Y) of the prescale value
Select decimal point
Note: The above is an example when the bank number is set to 1.
setup - Program input mode/input sensor/serial communications
count
in
u-no
bps
len
sbit
prty
Specify input mode
Select a sensor type
Enter the unit no. for the host
Select the baud rate
Select the word bit length
Select the stop bits
Select the parity bits
opt - Supplementary settings related to display or control
memo
compn
con-p
out
lset.h
lset.l
r-l
Select power failure memory function
Set compensation value
Select conditions that allow compensation input
Select output mode
Enter the upper limit (H) of linear output range
Enter the lower limit (L) of linear output range
Select the remote/local programming
test - Generating simulated input for testing the output function
prot - Program lock-out configuration
all
sUset
Enable all key protection
Enable set value change prohibition
Up/Down Counting Meter
K3NC
C-147
Counters
The K3NC has four modes: RUN mode for normal operations, Setting mode for initial parameter input, Protect mode for lock-out configuration, 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.
■ Initial Settings
■ Parameters
Power ON
Power ON
Press the Mode Key
Mode.
for 1 s min. to move to the Setting
Press the ESC Key
Up Key
for 1 s.
RUN Mode
Refer to Operation in RUN Mode.
Select the setup menu (
) with the Mode Key
and set the input mode, the input type, and other settings.
Setting Mode
1s
If required, set a prescale value in the prescaling menu
(
).
Set value menu
Set comparative set values in the set value menu (
).
1s
Comparative
set value bank
Make settings in the option menu (
−
No key operation for 5 s
) as required.
(See note 1.)
Comparative
set value OUT1
−
0
−
−
0
−
−
0
−
−
0
−
−
0
−
No key operation for 5 s
If necessary, generate simulated input for testing the output
function in output test (
).
(See note 1.)
Comparative
set value OUT2
No key operation for 5 s
(See note 1.)
After completing all the settings, press the ESC Key
return to RUN Mode.
to
Comparative
set value OUT3
No key operation for 5 s
(See note 1.)
Comparative
set value OUT4
Measurement starts.
No key operation for 5 s
(See note 1.)
Relationship between Input Mode and Counting Value
Comparative
set value OUT5
: Up/Down B (individual inputs)
INA
H
L
INB
H
L
No key operation for 5 s
3
0
3
2
2
Counting
value
1
2
1
0
Symbol
No-voltage
input
H
L
Closed
Open
: Up/Down C (phase difference inputs)
INA
H
L
INB
H
L
3
2
Counting
value
0
1
3
2
2
Output test
Note 1: The meaning of H and
L in the graphs:
1
2: At least 1/2 of the first
signal width is required for
B. Otherwise a counting
error of ±1 may occur.
1
0
Selecting the Sensor Type
NO: Voltage pulse H
NC: Voltage pulse L
No-contact or voltage pulse input
Contact input
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 @@@@[email protected] (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.
C-148
Up/Down Counting Meter K3NC
0.5 m
250 pulses
K3NC
Encoder
and
Changing Set Values
By pressing the Shift Key
while a parameter is displayed, the set value can be
changed (setting status). The PROG status indicator will flash. Change the set
value as required, and press the Mode Key
to register the setting and move to
the next parameter.
Setting Status
Change the set value using the Up
Key and the Shift Key .
u-d c
count
Counters
Protect Mode
PROG flashes.
Next parameter
If there is no key operation for 5 seconds,
the setting is registered and the parameter
is displayed again.
Setup menu
Prescaling menu
1s
1s
Input mode
Prescale value
bank
−
(See note 1.)
b
b/u-d
u-d c
No key operation for 5 s
Sensor type
Input A prescale
value mantissa
−
(See note 1.)
u-d
No key operation for 5 s
−
Communications
unit number
No key operation for 5 s
Input A prescale
value exponent
No key operation for 5 s
−
No key operation for 5 s
−
Baud rate
(See note 1.)
−
No key operation for 5 s
1200/2400/4800/
9600 /19200/38400bps
No key operation for 5 s
Decimal point
−
7 /8bit
Word bit length
No key operation for 5 s
No key operation for 5 s
Stop bits
1/ 2 bit
No key operation for 5 s
Parity bits
/
/
Option menu
1s
Power failure
memory
No key operation for 5 s
Compensation
value
−
−
· In the Setting Mode, the measurement value is reset (i.e., to
0) and outputs turn OFF.
· The measurement value will be reset if the Setting Mode is
entered during measurement.
No key operation for 5 s
Conditions that
allow compensation input
No key operation for 5 s
· Depending on the output type of the model used, some
parameters (indicated in
) are not displayed (and
hence cannot be set).
No key operation for 5 s
· If the input mode is changed, all parameters will be reset to
their initial values. Set the input mode first.
Output mode
Upper limit (H)
of linear output range
0
Note 1: A number in the range 1 to 4 will be displayed.
−
No key operation for 5 s
Lower limit (L)
of linear output range
−
Settings displayed in reverse colors are defaults.
No key operation for 5 s
Remote/local
programming
/
Up/Down Counting Meter
K3NC
C-149
• Measurement stops in Protect Mode.
Power ON
• Depending on the output type of the model used, some parameters (indicated in
displayed (and hence cannot be set).
) are not
RUN Mode
Press the ESC Key
and Up Key
for 1 s.
Protect menu
prot
Press the Mode
Key for 1 s.
Protect Mode
All key protection
Set value change
prohibition
all
sUset
(See
note.)
Key-protection ON: kpon
Key-protection OFF: kpoff
Menu display
Press the Mode Key
to display the parameter.
Displayed only for
models with
comparative outputs.
Setting:
Next parameter:
sUset
Setting:
Next parameter:
Press the ESC Key
to return to the menu.
reset
Setting:
Next parameter:
secr
Setting:
Next parameter:
Menus protected
in Setting Mode
mm.rst
Parameter display
all
prot
Maximum/minimum
value reset prohibition
secr
Note: Press the Shift Key
to make it
possible to set or change parameters.
Meaning of parameter
Setting range
All key protection:
All key operations are prohibited in
RUN Mode. (If all key protection is
ON, only the key for going to Protect
Mode is enabled.)
Set value change prohibition:
Changes to comparative set values
are prohibited in RUN Mode. (Displayed only for models with comparative outputs.)
Use the Up Key
to
change the setting.
➤
kpon
➤
kpoff
Use the Mode Key
to enable the setkpon ting and move to the
Key protection ON:
next parameter.
Key protection OFF: kpoff
Reset prohibition:
Resetting the counting value using
the front panel keys is prohibited.
(Resetting by external signals is not
prohibited.)
Menus protected in Setting Mode:
Setting operations in Setting Mode
are prohibited in the way shown below.
Setting menu
0
1
Option menu
×
×
×
×
Note: If there is no key operation for 5 seconds, the setting is automatically registered.
Up/Down Counting Meter K3NC
1
➤
2
×
Scaling menu
Setup menu
Use the Up Key
to
change the setting.
Setting
Set value menu
C-150
Setting key
(See note.)
0 /1/2
➤
2
➤
3
Use the Mode Key
to enable the setting and move to the
next parameter.
■ Troubleshooting
When an error occurs, error details will be displayed in the PV display. Take the appropriate countermeasures according to the error displayed.
Error contents
Comparative output
Output
status
BCD output
Communications
output
Countermeasure
Linear
output
m1.err (M1.ERR) Memory error
m2.err (M2.ERR)
OFF
OFF (all outputs
in "H" status)
OFF
OFF
Reset the power. If the same error
occurs, repair is necessary.
m3.err (M3.ERR)
OFF
OFF (all outputs
in "H" status)
OFF
OFF
Reset the power while holding
down the ESC Key, the Up Key, and
the RESET/TEACH Key. The settings will be returned to their initial
values. Redo the settings. If the
same error occurs, repair is necessary.
OFF
OFF (all outputs
in "H" status)
OFF
OFF
(minimum
value)
Reset the power. If the same error
occurs, repair is necessary. If normal operation is restored, it is possible that the original error was
caused by the influence of noise.
Check that there are no sources of
noise in the vicinity.
Continues
Continues
Continues
The OVER signal The OVER or UNDER signal turns
turns ON.
ON.
Take steps to ensure that the input
values and display values are within the allowable ranges.
Continues
If an attempt to change a setting
using key operations is made with
the remote/local selection set to remote, this error will flash for 3 s. To
enable settings to be changed, set
the remote/local selection to local.
err-o (ERR-O)
chg-o (CHG-O)
Output error
(Display value
flashes.)
The input range and Continues
display range were
exceeded.
rmt (RMT)
The remote/local
(Flashes for 3 s.) section is set to remote.
Continues
Continues
Continues
Up/Down Counting Meter
K3NC
C-151
Counters
Error display
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