Omron K3GN User manual

9
1/32 DIN Digital Panel Meter K3GN
Compact, Intelligent Panel Meter
Offers NEMA 4X Water Resistance,
Optional Communications Interface
1General-purpose industrial process
meter is ideal for many applications:
Process meter (DC voltage/current input)
RPM processor/Tachometer (frequency input)
Digital data display for PC or PLC (RS-485 communications)
Monitoring conveyor speeds and motor load currents
1Easy to configure from front panel or
using SYS-Config Software
6 analog input ranges available: 4 to 20 mA, 0 to 20 mA; 1 to
5VDC,0to5VDC;--5to+5VDC,--10to+10VDC
5 kHz max input pulse frequency range
Scaling in a wide range of engineering units
Programmable output operation action, decimal point position
setting, teaching function for input range, leading zero
suppression and average processing
+ò
1Advanced display features enhance operator comprehension
5-digit display can be programmed to display red or green characters
Display can be programmed to change color when an output turns on
High-contrast backlit LCD display provides good legibility in most lighting conditions
1High accuracy: ±0.1% full scale
1Selectable outputs: 2 relay outputs, 3 transistor outputs, RS-485 communications
1Compact 1/32 DIN size saves panel space and shallow mounting depth allows thinner
control cabinets: measures 48 W x 24 H x 83 D mm (1.89 x 0.94 x 3.27 inches)
Ordering Information
3PANEL METERS
Input type Supply
l
t
Output Part number
y
y
voltage No communications RS-485 communications
DC voltage/current, NPN 24 VDC Dual relays (SPST-NO) K3GN-NDC 24VDC K3GN-NDC-FLK 24VDC
g
,
Three NPN open collector K3GN-NDT1 24VDC K3GN-NDT1-FLK 24VDC
DC voltage/current, PNP Dual relays (SPST-NO) K3GN-PDC 24VDC K3GN-PDC-FLK 24VDC
g
,
Three PNP open collector K3GN-PDT2 24VDC K3GN-PDT2-FLK 24VDC
3PROGRAMMING SOFTWARE
Description Part number
Sets all panel meter parameters, initiates teaching function. Use with RS-485 communications models. SYS-CONFIG V2.0

K3GN
K3GN
2
3MODEL NUMBER LEGEND
K3GN - - 24 VDC
12 3
1. Input Type
ND: DC voltage/current, NPN
PD: DC voltage/current, PNP
2. Output Type
C: 2 relay contact outputs (SPST-NO)
T1: 3 transistor outputs (NPN open collector)
T2: 3 transistor outputs (PNP open collector)
3. Communications Output Type
None: Communications not supported
FLK: RS-485
Specifications
3RATINGS
Supply voltage 24 VDC
Operating voltage range 85% to 110% of the rated supply voltage
Power consumption (See Note) 2.5 W max. (at max. DC load with all indicators lit)
Insulation resistance 20 MΩmin. at 500 VDC between external terminal and case.
Insulation provided between inputs, outputs, and power supply.
Dielectric withstand voltage 1,000 VAC for 1 min between external terminal and case.
Insulation provided between inputs, outputs, and power supply.
Noise immunity ±480 V on power supply terminals in normal mode, ±1,500 V in common mode,
±1µs, or 100 ns for square-wave noise with 1 ns
Vibration resistance Malfunction 10 to 55 Hz, 10 min each in X, Y, and Z directions; acceleration: 9.8 m/s2
Destruction 10 to 55 Hz, 30 min each in X, Y, and Z directions; acceleration: 19.6 m/s2
Shock resistance Malfunction Models with transistor outputs: 196 m/s2for 3 times each in X, Y, and Z directions
Models with relay contact outputs: 98 m/s2for 3 times each in X, Y, and Z directions
Destruction 294 m/s2for 3 times each in X, Y, and Z directions
Ambient temperature Operating -- 1 0°Cto55
°C(14 °F to 131°F) with no condensation or icing
Storage -- 2 5°Cto65
°C(--13 °F to 149°F) with no condensation or 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 1 GHz) (level 3)
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 UL Listed, File No. E41515 to UL508 standard
CSA Certified, File No. LR67027 to CSA22.2 No. 142--M1987 standard
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. 100 g
Note: A control power supply capacity greater than the rated capacity is required when the Digital Panel Meter is turned ON. Do not for-
get to take this into consideration when using several Digital Panel Meters. When power is supplied, all indicators will light and
outputs will be OFF. When using startup compensation time operation, the display will read “ööööö” and all outputs will be OFF.

K3GN K3GN
3
3INPUT/OUTPUT RATINGS
Relay Contact Output
(Incorporating G6K Relays)
Load type Resistive load (cosφ=1)
Rated load 1 A at 30 VDC
Rated carry current 1 A max. (at COM terminal)
Max. contact voltage 60 VDC
Max. contact current 1 A (at COM terminal)
Max. switching capacity 30 VA
Min. permissible load
(P level, reference value) 10 mV, 10 µA
Mechanical life 50,000,000 times min. (at a switching frequency of 36,000 times/hr)
Electrical life
(at an ambient temperature of 23°C) 100,000 times min. (at the rated load with a switching frequency of 1,800 times/hr)
Transistor Output
Rated load voltage 24 VDC
Max. load current 50 mA
Leakage current 100 µAmax.
3COMMUNICATIONS
Communications type RS-485
Transmission method 2-wire, half-duplex
Synchronization method Start-stop synchronization
Baud rate 1,200/2,400/4,800/9,600/19,200 bps
Transmission code ASCII
Communications Reading/Writing
to the K3GN Read/write set values, read/write scaling values, enable/disable the writing of data through communications, forced-zero control, and other data.
Refer to
N102 Operation Manual
for more details.
3MEASURING RANGES
Process Voltage/Current Inputs
Input Measuring range Measuring accuracy Input impedance Displayable range
DC volta
g
e1.000 to 5.000 V/ ±0.1% FS ±1di
g
it max. 1M
Ωmin. --19999 to 99999
D
C
v
o
l
t
a
g
e
1
.
0
0
0
t
o
5
.
0
0
0
V
/
0.000 to 5.000 V
±
0
.
1
%
F
S
±
1
d
i
g
i
t
m
a
x
.
at 23±3°C (73.4±5.4°F)
1
M
Ω
m
i
n
.
1
9
9
9
9
t
o
9
9
9
9
9
(with scaling function)
--5.000 to 5.000 V ±0.1% FS ±1 digit max.
t
2
3
5
°
C
(
7
3
4
9
°
F
)
(
w
i
t
h
s
c
a
l
i
n
g
f
u
n
c
t
i
o
n
)
--10.00 to 10.00 V
g
at 23±5°C (73.4±9°F)
DC current 4.00 to 20.00 mA/ ±0.1% FS ±1di
g
it max. 60 Ω
D
C
c
u
r
r
e
n
t
4
.
0
0
t
o
2
0
.
0
0
m
A
/
0.00 to 20.00 mA
±
0
.
1
%
F
S
±
1
d
i
g
i
t
m
a
x
.
at 23±3°C (73.4±5.4°F)
6
0
Ω
No-voltage Contact/Open Collector Inputs
Input Measuring range Measuring accuracy
at 23±5°C (73.4±9°F) Displayable range
No-voltage contact (30 Hz max.) with
ON/OFF pulse width of 16 ms min. 0.05 to 30.00 HZ ±0.1% FS ±1 digit max. --19999 to 99999
(with scaling function)
Open collector (5 kHz max.) with
ON/OFF pulse width of 90 µsmin. 0.1 to 5000.0 HZ
(
w
i
t
h
s
c
a
l
i
n
g
f
u
n
c
t
i
o
n
)
3DIGITAL DATA DISPLAY (BY RS-485 COMMUNICATION)
Displayable range --19999 to 99999

K3GN
K3GN
4
3CHARACTERISTICS
Input signal Process voltage
(1to5V,0to5V,--5to+5V,
-- 10 t o +1 0 V)
Process current
(4 to 20 mA, 0 to 20 mA)
No-voltage contact
(30 Hz max. with ON/OFF pulse
widthof16msmin.)
Open collector
(5 kHz max. with ON/OFF pulse
width of 90 µsmin.)
Digital data display
(by RS-485 communication)
A/D conversion
method Double integral method ---
Sampling period 250 ms ---
Display refresh
period Sampling period (sampling times multiplied by number of averaging times if average processing is selected.)
Pulse measurement
method --- Periodic measurement ---
Connectable
sensors --- ON residual voltage: 2.5 V max. OFF leakage current: 0.1 mA max.
Load current: Must have a switching capacity of 15 mA min.
Must be able to reliably switch load currents of
5mAmax.
Max. displayed digits 5 digits (--19999 to 99999)
Display 7-segment digital display, character height: 7.0 mm (0.28 in)
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 as desired.
External controls
(See Note 1) HOLD: Measurement value held ZERO: Forced zero --- HOLD: Measurement value held ZERO: Forced zero
Hysteresis setting Programmable with front-panel key inputs (0001 to 9999)
Other functions Programmable Color Display (red and/or green; display can change color when output turns on)
Selectable output operating action
Teaching set values
Average processing (simple average)
Lockout configuration
Communications writing control (communications output models only)
Forced-zero set with front panel
keys
Control inputs (HOLD/ZERO)
selection via front panel keys
Field calibration
Startup compensation time
(0.00to99.9s)
Auto-zerotime(0.0to19.9s)
Forced-zero set with front panel
keys
Control inputs (HOLD/ZERO)
selection via front panel keys
Output Relays: 2 SPST-NO
Transistors: 3 NPN open collector
3 PNP open collector
---
Combinations:
Communications output (RS-485) + relay outputs (2 SPST-NO);
Communications output (RS-485) + transistor outputs (3 NPN open collector);
Communications output (RS-485) + transistor outputs (3 PNP open collector)
Communications Communications function: RS-485 (See Note 2)
Delay in comparative
outputs
(transistor outputs)
750 ms max.
Enclosure ratings Front panel: NEMA 4X for indoor use (equivalent to IP66)
Rear case: IEC standard IP20
Terminals: IEC standard IP20
Memory protection Non-volatile memory (EEPROM; possible to rewrite 100,000 times)
Note: 1. The minimum input time for control signals is 80 ms.
2. Refer to
N102 Operation Manual
for more details.

K3GN K3GN
5
Nomenclature
1. Main display
2. Status indicators
3. Level indicator
4. Level key
2. Status indicators
7. Up/Zero key
6. Shift key5. Mode key
Name Functions
1. Main display Displays process values, parameters, and set values.
2. Status indicators OUT1 Lit when output 1 is ON.
OUT2 Lit when output 2 is ON.
SV Lit when a set value is being displayed or changed.
TLit when the teaching function is enabled. Flashes when the K3GN is in teaching operation.
Lit when a calibration value is being displayed during user calibration. Flashes while reading a
calibration value.
ZERO Lit while the forced-zero function is activated.
HOLD Lit when HOLD input is ON.
CMW Lit when communications writing is “enabled” and is out when it is “disabled.”
3. Level indicator Displays the current level that the K3GN is in. (See below for details.)
4. Level Key Used to change the level.
5. Mode Key Used to allow the Main display to indicate parameters sequentially.
6. Shift Key Used to enable that set value to be changed. When changing a set value, this key is used to
move along the digits.
7. Up/Zero Key Used to change a set value. Used to set or clear a forced-zero function when a measurement
value is being displayed.
Level indicator Level
)Protect
Not lit Operation
æAdjustment
,Initial setting
äCommunications setting
áAdvanced function setting
.User calibration

K3GN
K3GN
6
Operation
3MAIN FUNCTIONS
Input Types and Ranges
Input type (setting parameter) Function Input range (setting parameters) Setting range
Analog input (æ'æ% )Selects DC voltage/current
i
l
i
t
4to20mA/0to20mA(
òôö)Displayable from --19999 to
9
9
9
9
9
i
t
h
l
i
f
t
i
a
o
g
u
(
)
g
signal input. 1to5V/0to5V(
õñ)
y
99999 with scaling function.
T
h
e
p
o
s
i
t
i
o
n
o
f
t
h
e
d
e
c
i
m
a
l
--5to+5V(
ñ)
T
h
e pos
i
t
i
on o
f
t
h
e
d
ec
i
ma
l
point can be set as desired.
-- 10 t o +1 0 V (õö)
o
i
n
t
c
a
n
b
e
s
e
t
a
s
d
e
s
i
r
e
d
.
Pulse input ().%,â)Selects pulse input signal. 0.05 to 30 Hz (óö)
u
s
e
u
(
)
g
0.1to5kHz(
,$)
Remote (+&-)Displays digital data from PLC or
PC. ---
Scaling
-Analog (Process) Inputs
The K3GN 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
Input value
INPUT1 INPUT2
Input value
Displayed value Displayed value
DISPLAY1 DISPLAY2
DISPLAY1 DISPLAY2
INPUT2 INPUT1
-Pulse Frequency
The K3GN converts pulse signal inputs into desired units such as
revolutions or rotational speeds.
The slope of the linear relationship between the input value and
display value is calculated automatically when an input value and
its corresponding display value are entered.
Input value: Any arbitrary input value
Display value: Desired display value corresponding to input value
If scaling for pulse signals is not performed, the input frequency
will be displayed.
The relationship between input, f, and display, Y, is expressed in
the form Y = f ×
a
(multiplication factor). The value of
a
will vary
according to the display unit. For example, if the display unit is
rpm, Y is given by the following:
Y=f×1/N ×60 (i.e.,
a
=1/N×60)
where N is the number of pulses per revolution.
If the display unit is m/min, Y is given by the following:
Y=f×π d×1/N ×60 (i.e.,
a
=πd×1/N ×60)
where πd = the wavelength (m) per revolution.
Example: When displaying the rotational speed (rpm) for a
machine that generates 5 pulse signals per revolution, Y is given
by the following:
Y=f×1/5 ×60,
so if f = 1, then Y = 12. Therefore, input 1 for "') and 12 for ã,).
Input value
Displayed value
K3GN
Proximity Sensor
ã,)
"')
Average Processing
The average processing function stabilizes displayed values by
averaging the corresponding input signals that fluctuate
dynamically.
Hysteresis
The hysteresis of comparative outputs can be set to prevent the
chattering of relay or transistor outputs.
Upper limit (high acting)
Set value
Output ON
OFF
Hysteresis
Measurement value

K3GN K3GN
7
Startup Compensation Time (Pulse Input Only)
The startup compensation time parameter keeps the measure-
ment operation from sending an unnecessary output correspond-
ing to instantaneous, fluctuating input from the moment the K3GN
is turned ON until the end of the preset period.
The compensation time can be set in a range from 0.0 to 99.9
seconds as the waiting time until the devices subject to measure-
ment become stable after the startup of the power supply.
Changing the Display Color
The display can be programmed to change color when an output
turns ON. In an example, the K3GN can be programmed to
display Green for normal, and Red for errors. The color can be
set to change from either green to red or red to green when
output turns ON.
K3GN can also be programmed to display only one unchanging
color: Red or Green.
Teaching
An actual measured value as a set value without any front panel
key input can be set with the teaching function. Teaching is useful
for making settings while checking the operation status of K3GN.
Forced-zero Function
The zero point value can be shifted (tare) to a desired value
(such as might be required when adjusting reference values) with
one touch of the Up/Zero Key on the front panel.
OUT1
OUT2
SV
ZERO
HOLD
CMW
Configurable Output Operating Action
Output 1 and output 2 can be set to operate in one of the 3 following modes:
-Upper limit (High Acting):
The output is turned ON when the measured value is greater than its set value.
-Lower limit (Low Acting):
The output is turned ON when the measured value is less than its set value.
-Upper and lower limits (Outside band Acting):
An upper limit (H set value) and lower limit (L set value) can be set independently.
The output is turned ON when the measured value is greater than upper-limit set value or less than the lower-limit set value.
Only transistor outputs have a PASS output which is output when both OUT1 and OUT2 are OFF.
Upper Limit (High Acting)
OUT1/2 set value
Measurement value
ON
OFF
Output
Hysteresis
Lower Limit (Low Acting)
OUT1/2 set value
ON
OFF
Output
Hysteresis
Upper and Lower Limits
(Outside Band Acting)
Upper-limit set value
for OUT1/2
Hysteresis
Measurement value
Hysteresis
Lower-limit set value
for OUT1/2 ON
OFF
Output
Measurement value
The three types of output operations shown above can be combined as desired. The following are examples of possible combinations.
Upper Limit 2-stage Output
OUT2
set value
OUT1
set value
Threshold Output
Upper-limit OUT2
set value
Upper-limit OUT1
set value
Lower-limit OUT1
set value
Lower-limit OUT2
set value
ON
OFF
OUT2
ON
OFF
OUT1
Combination of Upper Limit and
Upper/Lower Limits
Upper-limit
OUT2 set value
OUT1 set value
Lower-limit
OUT2 set value
ON
OFF
OUT2
ON
OFF
OUT1
ON
OFF
OUT2
ON
OFF
OUT1
Measurement
value
Measurement
value
Measurement
value

K3GN
K3GN
8
3EXTERNAL CONNECTIONS
Terminal Arrangement
Output terminals
Input terminals
Models without
communications
Models with
communications
NC NC
RS-485
B(+) A(--)
78
78
C
Models with NPN inputsModels with PNP inputs
Operation
power supply
24 VDC
123
123
Event or pulse/contact input
Event or pulse/contact input
A
Models withModels with relay outputsNPN transistor outputs
Analog input Models with
PNP transistor outputs
9101112
9101112
9101112
OUT1
PASS
NC
OUT2
COM
OUT1
OUT2
COM
OUT1 PASS OUT2 COM
D
Voltage Current
Analog input
456
B
CD
AB
78 9101112
123 456
COM
Operation
power supply
24 VDC
Terminal No. Function Description
$-%Operation power Connect the operation power supply.
&-%Event input or pulse/contact input Operates as follows depending on
parameter setting:
•Holds process value.
&-$•Calibratetheprocessvaluetozeroand
clear the forced-zero function.
•Pulse or contact input.
',)-(Analog input Connect the voltage or current analog
input.
*-+Communications RS-485 communications terminals.
,,.-/Outputs Outputs relay or transistor outputs. There is
a
l
s
o
a
P
A
S
S
o
u
t
p
u
t
f
o
r
m
o
d
e
l
s
w
i
t
h
,,-,.-/a
l
so a
P
A
S
S
output
f
or mo
d
e
l
sw
i
t
h
transistor outputs.

K3GN K3GN
9
3INPUT CIRCUITS
Analog Input (DC Voltage/Current)
Voltage input
COM 5
4Current input
COM 5
6To A/DTo A/D
A
60 Ω
A+B=1 MΩ
B
Pulse Input/Control Event Input (HOLD/ZERO)
2
3
PNP Input
NPN Input
24 VDC +
4.7 kΩ
2.35 kΩ
Hold/Zero Pulse 3
4.7 kΩ
2.35 kΩ
2
Hold/Zero Pulse
24 VDC --
24 VDC +
24 VDC --
11
3OUTPUT CIRCUITS
Contact Output
9
11
12
5V
5V
OUT1
OUT2
OUT3
Transistor Output
9
10
11
12
8.2 Ω
8.2 Ω
8.2 Ω
OUT1
OUT2
PASS
COM
NPN output
9
10
11
12
8.2 Ω
8.2 Ω
8.2 Ω
OUT1
OUT2
PASS
COM
PNP output

K3GN
K3GN
10
3BLOCK DIAGRAM
DisplayKey
Micro-
computer
Drive circuit
Drive circuit
Drive circuit Communica-
tions driver
Output
circuit
Transistor output
(See Note 1)
Contact output
(See Note 2)
Communications terminal
(See Note 3)
Constant voltage circuit 1
Power supply circuit
Control input
circuit Waveform
rectification
circuit
Input circuit
Analog input
terminal
Note: 1. Transistor output models only.
2. Relay output models only.
3. Models with communications functions only.
Operating power supply
Constant voltage circuit 2
Pulse/
Control
input
terminal
EEPROM
A/D
conversion
circuit