Weighing Meter K3NV
Weighing Meter
K3NV
Highly Functional Weighing Meter with
Easy-to-read LED
Easily programmable through the front panel or via
RS-232C, RS-485, or RS-422.
Programming with easy setup and calibration.
Load cell can be connected to a maximum of
20 mV/V.
Easy-to-use scaling function with the key programming method.
A wide range of Output Boards, including communications and linear boards.
uC
Tare function allows zero adjustment at the reference position.
Load cell power supply of 100 mA at 10 VDC.
NEMA4/IP66 front panel.
Conforms to
(IEC1010-1).
EMC
standards,
EN61010-1
UL/CSA approved.
Ordering Information
Base Units
Supply voltage
Model
ode
100 to 240 VAC
Basic Models
12 to 24 VDC
K3NV-LC1A
K3NV-LC2A
K3NV-LC1C
K3NV-LC2C
These models provide a process
value LED and front-panel control
keys. Can be connected to available Output Board, or can be
used for display only without an
Output Board.
Set Value LED Models
These models provide a process value LED, set value LED,
and front-panel control keys.
Can be connected to Relay
Contact, Transistor, or Combination Output Boards.
1
K3NV
K3NV
Available Output Board Combinations
Output configuration
Output
Ou
pu type
ype
Relay contact
Transistor
Output
Ou
pu
boards
b
d
Base units
Basic
Set Value
LED
Display
3 outputs: H, PASS, L (SPDT)
K31-C1
Yes
Yes
5 outputs: HH, H, L, LL (SPST-NO), and PASS (SPDT)
K31-C2
Yes
Yes
5 outputs: HH, H, L, LL (SPST-NC), and PASS (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
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
Co
Communication
u ca o boa
boards
ds
(
(see
note)
t )
Co b a o ou
Combination
output
pu a
and
d
communication
i ti boards
b
d
Note:
2
For details, refer to the Communication Operation Manual.
K3NV
K3NV
Model Number Legend:
Base Units and Output Boards can be ordered individually or as sets. Refer to the Available Output Board Combinations table on page 2.
Base Units
K3NV 1 2 3 4
Output Boards
K31 5 6 7
1, 2. Input Sensors Codes
LC: Load cell input
3.
Supply Voltage
1: 100 to 240 VAC
2: 12 to 24 VDC
4.
Display
A: Basic
C: Set Value LED Display
Note:
Base Units with Output Boards
K3NV 1 2 3 4
5 6 7 8
8
5, 6, 7, 8. Output Type Codes
C1: 3 comparative relay contact outputs (H, PASS, L: SPDT)
C2: 5 comparative relay contact outputs (HH, H, L, LL: SPSTNO; PASS: SPDT)
C5: 5 comparative relay contact outputs (HH, H, L, LL: SPSTNC; PASS: SPDT)
T1: 5 comparative transistor outputs (NPN open collector)
T2: 5 comparative transistor outputs (PNP open collector)
B2:
B4:
L1:
L2:
L3:
L4:
BCD output (NPN open collector) (see note)
BCD output + 5 transistor outputs (NPN open collector)
Linear output (4 to 20 mA) (see note)
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)
These output types are available on Basic Models only.
3
K3NV
K3NV
Specifications
Ratings
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
100 mA at 10 VDC±5%
Insulation resistance
20 MΩ min. (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 ±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 (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 temperature
Operating: –10°C to 55°C (with no icing)
Storage: –20°C to 65°C (with no icing)
Ambient humidity
Operating: 25% to 85% (with no condensation)
Ambient atmosphere
Must be free of corrosive gas
EMC
Emission Enclosure:
Emission AC Mains:
Immunity ESD:
Immunity-RF-interference:
Immunity Conducted Disturbance:
Immunity Burst:
EN55011 Group 1 class A
EN55011 Group 1 class A
EN61000-4-2:4-kV contact discharge (level 2)
8-kV air discharge (level 3)
ENV50140: 10 V/m (amplitude modulated, 80 MHz to
1 GHz) (level 3)
10 V/m (pulse modulated, 900 MHz)
ENV50141: 10 V (0.15 to 80 MHz) (level 3)
EN61000-4-4:2-kV power-line (level 3)
2-kV I/O signal-line (level 4)
Approved standards
UL508, CSA22.2; 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 “00000” and all outputs will be OFF.
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.
4
1.5 A at 250 VAC, 1.5 A at 30 VDC
375 VA, 80 W
K3NV
K3NV
BCD Output
I/O signal name
Outputs
Note:
Item
REQUEST,
QU S , HOLD,
O , MAX,, MIN,, RESET
S
Inputs
DATA,, POLARITY,
OVERFLOW,
O
,O
O ,
DATA VALID
VALID, RUN
Rating
Input signal
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.
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.
Note:
1 to 5 V
1 mV/10 digits (see note)
±1.5% FS
500 Ω min.
1 KΩ min.
For the 1 mV/10-digit output, the output voltage changes for every 40 to 50 increment in the display value.
Communications
Item
RS-232C, RS-422
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
RS-485
2-wire, half-duplex
ASCII (7-bit)
Write to K3NV
Comparative set value, scaling value, remote/local programming, forced zero control, reset
control of maximum/minimum values, and other setting mode items excluding communications
conditions.
Read from K3NV
Process value, comparative set value, maximum value, minimum value, model data, error
code, and others
For details, refer to Communication Operation Manual.
5
K3NV
K3NV
Characteristics
Input signal
DC voltage
A/D conversion method
Double integral method
Sampling period
50 Hz: 12.5 times/s; 60 Hz: 15 times/s (selectable)
Display refresh period
Sampling period (sampling times multiplied by number of averaging times if simple average
processing is selected.)
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.
Scaling function
Programmable with front-panel key inputs (range of display: –19999 to 99999). The decimal point
position can be set freely.
HOLD function
Maximum hold (maximum data)
Minimum hold (minimum data)
External controls
HOLD:
RESET:
ZERO:
Comparative output hysteresis
setting
Programmable with front-panel key inputs (1 to 9999).
Other functions
Variable linear output range (for models with linear outputs only)
Remote/Local processing (available for communications output models only)
Maximum/Minimum value data reset with front panel keys
Tare (forced–zero) set with front panel keys
Averaging processing function (simple or moving average)
Startup compensation time (0.0 to 99.9 s)
Comparative output pattern selection
Security
Field calibration
Output configuration
Relay contact output (3 or 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
(transistor output)
400 ms max.
Enclosure ratings
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)
(Process value held)
(Maximum/Minimum data reset)
(Forced zero)
Measuring Ranges
Input range
DC voltage
Note:
Measuring range
Input impedance
Reliability (see note 2)
Instantaneous overload
(30 seconds)
a
0.00 to 199.99 mV
10 MΩ min.
±0.1%rdg ±5 digit max.
±200 V
b
0.000 to 19.999 mV
10 MΩ min.
±0.1%rdg ±5 digit max.
±200 V
c
±100.00 mV
10 MΩ min.
±0.1%rdg ±3 digit max.
±200 V
1. The “rdg” stands for “reading value.”
2. The accuracy is guaranteed at the ambient temperature of 23±5°C.
The reliability becomes ±0.1% FS for values smaller than 10% of the maximum input value for any input range.
Load Cell Connection Example
0V
+10 V
Load cell
6
K3NV
K3NV
Nomenclature
1. SV Display
7. Status Indicators
2. PV Display
3. Comparative Output
Status Indicators
4. SV Display Status
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 in addition to the max./min. 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.
The process value, maximum value, or minimum value to be displayed can be selected.
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 indicators
HOLD:
MAX:
MIN:
ZERO:
PROG:
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 forced zero, maximum value, and minimum value are 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.
Lit when HOLD input is ON.
Lit when the maximum value is indicated on the PV display.
Lit when the minimum value is indicated on the PV display.
Lit when the forced zero function is activated.
Lit or flashes while parameters are being set.
7
K3NV
K3NV
Operation
Setting Procedures
The K3NV 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 and user calibration. The parameters that are accessible on any individual K3NV will vary
depending on the Output Board installed. Refer to the K3NV Operation Manual for details.
RUN Mode:
Remains in this mode under normal operation.
The process value or the max./min. value can be monitored.
Using the front panel keys, the comparative set value can be changed and forced-zero reset or max./min. values reset
can be performed.
Setting Mode:
Used for making initial settings.
Includes four menus (Set value (sUset), scaling (scale), 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 and user calibration of the inputs.
The user calibration is valid for selected input ranges.
When power is ON
+
Power ON
Maintenance mode
ESC
RUN mode
ESC
+
1s
1s
ESC
ESC
Protect mode
Setting mode
sUset - Program set values
sU.hh Enter set value HH
sU. h Enter set value H
sU. l Enter set value L
sU.ll Enter set value LL
scale - Display scaling
inp.2 Enter signal level for scaling point #2
dsp.2 Enter display reading for scaling point #2
inp.1 Enter signal level for scaling point #1
dsp.1 Enter display reading for scaling point #1
decp Select decimal point
setup - Program input range/Serial communications
int Specifying input range
fre
Select the supply frequency to eliminate inductive
noise
uno Enter the unit no. for the host
bps
Select the baud rate
len
Select the word bit length
sbit
Select the stop bits
prty
Select the parity bits
opt - Supplementary settings related to display or control
aug
Set for averaging process value
stime Set startup compensation time
hys
Enter hysteresis value
cout Select the output pattern
lset.h Enter the upper limit (H) of linear output range
lset.l Enter the lower limit (L) of linear output range
rl
Select the remote/local programming
test - Generating simulated input for testing the output function
8
K3NV
K3NV
Parameters
Output Pattern Selection cout
The Intelligent Signal Processor converts input signals into desired
physical values.
INPUT2:
Any input value
DISPLAY2: Displayed value corresponding to INPUT2
INPUT1:
Any input value
DISPLAY1: Displayed value corresponding to INPUT1
The patterns of comparative output are selectable according to the
level change. Select the pattern according to the application.
Standard Output
Set value HH
Set value H
Input value
INPUT2
DISPLAY2
Displayed value
INPUT1
Set value LL
Comparative output HH
Comparative output H
DISPLAY1
DISPLAY2
Set value L
DISPLAY1
Displayed value
Scaling scal
PASS
Comparative output L
INPUT2
Input value
Comparative output LL
INPUT1
Zone Output
Average Processing aUg
Set value HH
The average processing function stabilizes displayed values by averaging the corresponding analog input signals that fluctuate dynamically or reducing the noise in the input signals.
Set value H
Set value L
Set value LL
Startup Compensation Time stime
The startup compensation time parameter keeps the measurement
operation from sending an unnecessary output corresponding to
instantaneous, fluctuating input from the moment the K3NX is
turned ON until the end of the preset period.
The compensation time can be set in a range from 0 to 99.9 seconds
as the waiting time until the devices subject to measurement become stable after the startup of the power supply.
Comparative output HH
Comparative output H
PASS
Comparative output L
Comparative output LL
Display
Level Output
Startup compensation time
Set value HH
Set value H
Set value L
Set value L
Set value LL
00000 displayed
Time
Comparative output HH
Comparative output H
Power supply
Comparative output L
Comparative output LL
Comparative
output L
PASS
Hysteresis hys
Note:
The hysteresis of comparative outputs can be set to prevent the
chattering of comparative outputs. Refer to page 12 for more
details.
Linear Output Range lset
The following setting conditions must be satisfied, otherwise no zone output will turn ON correctly.
LL < L < H < HH
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.
20 mA
Output
For the 4- to 20-mA
output type
4 mA
Lower
limit
Upper
limit
Display
Remote/Local Selection rl
Select remote programming when performing all settings through
the host devices and select local programming when performing
settings through key operation.
9
K3NV
K3NV
External Connections
Terminal Arrangement
Output unit
Terminal Numbers
Output
unit
18 19 20 21 22 23 24 25 26
10
11
12
13 14
15
16
17
8
9
Input
unit
1
Note:
Input unit
2
3
4
5
6
7
Terminals 7 to 13 are connected internally.
Input Unit
10 VDC
100 mA
+
–
10
1
11
2
ZERO
COM
12
13
3
4
14
5
15
6
16
7
Signal input terminal
HOLD RESET
LC: Load Cell Input
1
2
3
0.000 to
19.999 mV
–100.00 to
100.00 mV
0.00 to
199.99 mV
10
4
ANALOG
COM.
17
8
COM
Note:
9
100 to 240 VAC
12 to 24 VDC
Terminals 7 to 13 are connected internally.
When inputting the external control signals
through the open collector:
Transistor Inputs:
ON: Residual voltage must be 3 V max.
OFF: Leakage current must be 1.5 mA max.
The switching capacity must be 20 mA or
greater.
When the external signal input is short-circuited, a
voltage of approximately 5 V will be applied to between the terminals 5 to 7 and the COM terminal,
and a current of approximately 18 mA (nominal
value) will flow.
K3NV
K3NV
Output Unit
K31-C1: Relay (3 Outputs)
K31-C2: Relay (5 Outputs)
Outputs (5 A max. at 250 VAC)
H
18
19
Outputs (5 A max. at 250 VAC)
PASS
20
21
22
L
23
24
25
H
HH
LL
PASS
L
26
18
K31-C5: Relay (5 Outputs)
19
20
21
22
23
24
25
26
K31-T1: Transistor (NPN Open Collector)
Outputs (5 A max. at 250 VAC)
H
Outputs (50 mA max. at 12 to 24 VDC)
LL
L
18
19
20
21
22
23
24
25
Outputs (50 mA max. at 12 to 24 VDC)
19
20
HH
H
PASS
21
22
23
L
LL
24
25
COM
26
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.)
4 8
21
22
PASS
23
L
LL
COM
23
L
LL
COM
24
25
26
24
25
26
101
102
103
104
K31-FLK1: RS-232C
TXD
RXD
Outputs (50 mA max. at 12 to 24 VDC)
H
PASS
1 2 4 8 1 2 4 8 1 2 4 8 1 2 4 8 1 2
100
COMMON
HH
22
K31-B2, -B4: BCD (NPN Open Collector)
(Terminals 32 to 36 are provided only on K31-B4.)
104
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
H
21
26
K31-T2: Transistor (PNP Open Collector)
18
20
RUN
COMMON
REQUEST
MAX. REQ.
MIN. REQ.
HOLD
RESET
POLARITY
HH
H
PASS
L
LL
COMMON
18
19
HH
SG
PASS
DATA OVERFLOW
DATA VALID
HH
11
K3NV
K3NV
K31-FLK3, -FLK6: RS-422
(The right connector is provided only on K31-FLK6)
RS-422
18
19
Outputs (50 mA max. at 12 to 24 VDC)
OFF
HH
H
PASS
20
21
22
23
L
24
LL
25
COM
SDA
RS-485
+
–
ON
RDA
Terminator
Output NPN Tr.
(50 mA max. at 12 to 24 VDC)
LL
K31-FLK2, -FLK5: RS-485
(Terminals 21 to 26 are provided only on K31-FLK5.)
Terminator
26
ON
HH
H
COM
PASS
L
SDB
SG
RDB
OFF
K31-FLK4: RS-232C + Transistor (NPN Open Collector)
S D-sub 37P Connectors for BCD output (attachment)
Plug: XM2A-3701
Hood: XM2S-3711
Output NPN Tr.
(50 mA max. at 12 to 24 VDC)
LL
RS-232C
HH
H
COM
PASS
L
S D-sub 25P connectors for RS-232C output (K31-FLK1) (order
separately)
Plug: XM2A-2501
Hood: XM2S-2511
S D-sub 9P connectors for RS-422 output (K31-FLK3 and
K31-FLK6) (order separately)
Plug: XM2A-0901
Hood: XM2S-0911
S D-sub 9P connectors for RS-232C output (K31-FLK4) (order
separately)
Plug: XM2D-0901
Hood: XM2D-0911
Output Operation Timing in RUN Mode (Relay or Transistor Outputs)
The following timing chart is for a 5-comparative Output Board when the standard output pattern is selected.
Display
Display value
HH set value
HYS
H set value
HYS
HYS
L set value
LL set value
HYS
HH comparative output
H comparative output
PASS output
L comparative output
LL comparative output
Note:
12
Hysteresis
The hysteresis value set in setting mode will be applied to all set values.
K3NV
K3NV
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)
K3NV (1)
Programmable
controller
REQ.
(2)
REQ.
(3)
K3NV (2)
K3NV (3)
DATA (incl. POL and OVER)
and DATA VALID are wired-OR
processed.
The RUN, HH, H, PASS, L, and
LL signals are always output
regardless of the status of the
REQ signal. Do not OR-wire
these signals.
(1)
DATA
(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
REQ.
DATA All data “high”
DATA
VALID
Data 1
Data 2
40ms
40ms
Approx.
30 ms
64ms
24ms
64ms
24ms
The K3NV outputs each measurement at an interval of 64 ms when a REQ signal is ON continuously.
If the HOLD signal is ON at the moment the DATA output is switched from data 1 to data 2 or vice versa, the output BCD data will be either data 1
or data 2 according to the timing of the HOLD signal. However, output data will never below.
Block Diagram
Front panel keys
and switch
Auxiliary power
supply
Input signal
Control input
Control power
supply
Input circuit
Control input
circuit
Power supply
circuit
A/D conversion
circuit
LED
8-bit
microcomputer
Output
circuit
Waveform
adjustment
circuit
Voltage stabilizing
circuit
Auxiliary power supply
(input circuit)
Voltage stabilizing
circuit
A/D conversion circuit
Voltage stabilizing
circuit
Control input circuit
8-bit microcomputer
13
K3NV
K3NV
Installation
Example of Connection to Programmable Controller
Intelligent Signal Processor
PC (SYSMAC)
DC Input Unit
1. COMMON
COM
2. 1
IN
3. 2
IN
IN
5. 8
IN
Internal circuit
100
4. 4
23. DATA VALID
24. RUN
IN
IN
25. COMMON
Transistor Output Unit
26. REQUEST
OUT
30. RESET
OUT
240 Ω
240 Ω
31. POLARITY
240 Ω
(Polarity: +, –)
COM
(0 V)
24 VDC
+24 V
DC power supply
0V
14
Internal circuit
+5 V
Internal circuit
240 Ω
K3NV
K3NV
Dimensions
Note:
All units are in millimeters unless otherwise indicated.
PV Display
14.2
8.2
Panel Cutouts
45
+0.8
–0
92
+0.8
–0
75
120
15
K3NV
K3NV
Precautions
•
•
•
•
•
•
Be careful not to touch any terminals, otherwise you may receive
an electric shock.
Please do not disassemble the product nor touch the internal
components of the product, otherwise you may receive an
electric shock.
Unit Label (Attached)
No product is shipped with the unit label attached. Select a unit label
from the sheet provided and attach it to the Processor.
Be sure that the power supply voltage is within the rated range.
Do not use the Intelligent Signal Processor in locations with
flammable gas or combustible substances.
Be sure to wire the terminals correctly by checking the terminal
names.
Be sure that the terminal screws are tightened securely when
wiring.
Mounting
Recommended panel thickness is 1 to 3.2 mm.
Panel
Attach the mounting bracket on the left and right sides of the Intelligent Signal Processor 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.
Mount the Processor as horizontally as possible.
Never use the Processor in locations where corrosive gas (particularly sulfur or ammonia gas) is generated.
As much as possible avoid use of the Processor in a location subject
to severe shock or vibration, excessive dust, or excessive moisture.
Select an indoor mounting location where the Intelligent Signal Processor is at the rated temperature and humidity and free from direct
sunlight.
Separate the Processor from machines generating high-frequency
noise, such as high-frequency welding machines and high-frequency sewing machines.
Operation
A Processor model with a Relay Contact or Transistor Output Board
may not output any alarm signal normally if the model has an error. It
is recommended that an independent alarm device be connected to
the model.
The parameters are factory-set so that the Processor will operate
normally. The settings of the parameters may be changed according to the application.
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.
To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.
Cat. No. N085-E1-1A In the interest of product improvement, specifications are subject to change without notice.
OMRON Corporation
Supervisory Control Devices Division
28th Fl., Crystal Tower Bldg.,
1-2-27, Shiromi, Chuo-ku,
Osaka 540-6028 Japan
Phone: (81)6-949-6035 Fax: (81)6-949-6069
16
Printed in Japan
0698-1M (1297) a
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