Omron KM50-C Instruction Manual

KM50-C

KM50-C

INSTRUCTION MANUAL

All Rights Reserved

Smart Power Monitor

EN

INSTRUCTION MANUAL

9911216-0 A

■Nomenclature

KM50-C

Temperature unit

Action indication

UP key

SHIFT key

P

OUT1 STOP

UP

SHIFT MODE ENTER

1st display
2nd display

ENTER key

MODE key

■Display Screen

1) 1st display
Displays the measurement value or type of setting data.

2) 2nd display
Displays the unit or the parameter name of the measurement data or setting data.

3) Operation display

・OUT1:
・STOP:

The light turns ON in conjunction with the output set to the OUT1 terminal.

Lights ON when power is supplied after the time measurement function stops
following back-up power failure during power OFF. Lights OFF by setting time data.
When using the product with lights ON, measurement data log cannot be recorded.

・ (Key): Lights ON at protect setting.

4) Temperature unit
When selecting Celsius in the temperature unit setting, °C is shown.
When choosing Fahrenheit, °F is shown.

■Segment display

R

7SEG
11SEG

7SEG
11SEG

aAbBcCdDeEfFgGhHiIGJHKlLIMNNoOpPJQK
abcdefghijk lmnopqr

S

T

U

V

W

X

Y

Z

0

1

2

3

4

5

6

s

t

u

W

X

Y

y

Z

Y

1

2

3

4

5

6

s

t

u

v

w

x

y

z

0

1

2

3

4

5

6

9

7

8

9

7

8

9

7

8

■Basic usage

Setting Examples

Applicable circuit type: 1-phase 3-wire
Dedicated CT type: 5ACT
Time: March 5, 2010, 17:15

A. After checking the wiring, turn ON the power supply.

“Hm50c” is displayed and EEPROM is read (“wait” is displayed for 16 sec max).
When the power is turned ON for the first time, “e-t1” is displayed and STOP
turns ON because time has not been set. 3 sec later, active power in measure­ment mode is displayed. (STOP remains ON).

B. Set applicable circuit type to 1-phase 3-wire.

1. Press the M key for more than 3 sec to go to applicable circuit type “00.typ”
in operation setting mode.

2. Press the U key to shift to setting state. Press the U key to change the
applicable circuit type from “3p3w” to “1p3w”, and then press the O key to confirm.

C. Set dedicated CT type to 5ACT.

1. Press the S key to move to dedicated CT type “01.c.rg”.

2. Press the U key to shift to setting state. Press the U key to change the
dedicated CT type from “100a” to “5a”, and then press the O key.

D. Set the time to March 5, 2010, 17:15.

To use the log function, time setting is required.

1. Press the S key to move to time setting “11.tim”.

2. Press the U key to shift to setting state.
Check that the year is "2010”, and then press the O key.
Change the value of Month/Date with the U key and shift the digit with the S

3.
key to change the value from

4.

Change the value of Hour-Minute with the U key and shift the digit with the S

“

01 01

”

to

“

03 05

”

, and then press the O key.

key to change the value from “00-00” to “17-15”, and then press the O key.
The content of the time setting will be saved and STOP will be turned OFF.

5. Press the M key for more than 3 sec to move to measurement mode
(measurement start). When you move to measurement mode, the setting will
be saved and “save” is displayed.
This completes the basic settings.

■Mode configuration and key operation

1) Mode configuration

Mode Group Meaning

Measurement
mode

Protect setting mode Limit the function

Operation

Setting

setting mode

mode

Communication
setting mode

Basic level
Pro level

Basic level
Pro level Set the Pro level function

Read the measurement
data of the basic level

Read the measurement
data of the Pro level

Set the basic level function

Set the communication
function

Necessity of operation

and setting

Operate only at reading
Operate only at reading
Set only when needed

Setting required at first setting
Set only when needed
Set only when using the

communication function

2) Key operation
Monitoring state is a state in which setting value is displayed in protect setting mode and setting mode.
Setting state is a state in which setting can be changed.

Symbol

O

ENTER key

M

MODE key

S

SHIFT key

U

UP key

M＋S

(Press the S

key while holding

the M key)

M＋U

(Press the

U key while

holding the M key)

M＋O

Basic Meaning

･Mode switching
･Determination

･Mode switching
･Cancel

･Transition

･Shift to

setting state
･Change the
setting value

･Reverse
transition

･Change the
setting value
in reverse

･Mode switching

Mode State

Measurement mode

Protect setting mode,
Setting mode

Operation setting mode

Communication setting mode

Measurement mode

Setting mode

Measurement mode,
Setting mode

Measurement mode

Setting mode

Measurement mode

Setting mode

Measurement mode,
Setting mode

Measurement mode

Setting mode

Measurement mode
Setting mode

Measurement mode

Protect setting mode

Operation

Measurement history
(current day)

Setting state Determine the setting value.
Monitoring state

Monitoring state Move to operation setting mode.
Present measurement value,

measurement history

Measurement history

Monitoring state Move to measurement mode.
Setting state Cancel setting state.

Pro level Move to “PROLV” of the basic level.

Present measurement value

Measurement history

Monitoring state Change parameters.
Setting state Change digits.
Present measurement value

Measurement history

Monitoring state Shift to setting state.
Setting state Change the setting value.
Basic level (“PROLV”

remains displayed)
Present measurement value

Measurement history

Monitoring state Change parameters in reverse.
Setting state Change digits in reverse.

Measurement history

Setting state
Present measurement value,

measurement history
Monitoring state Move to measurement mode.

press for more
than 3 sec

click
click

click
press for more

than 3 sec
click
press for more than 3 sec
click

click

click
click
click
click
click
click
click
click
click

click
click
click

click
click
click
press for more

than 3 sec
press for more than 3 sec

Clear the currently displayed MAX
and MIN value of the present day.

Move to communication setting mode.

Move to operation setting mode.

Move to present measurement value.

Change parameters.
Switch measurement history display.

Move to measurement history.
Move from measurement history.

Move to Pro level.

Change parameters in reverse.
Switch the measurement history display.

Transit measurement history in reverse.
Change the setting value in reverse.

Move to protect setting mode.

■Setting mode

Operation setting modeBasic level

Item Setting range (1st display)

Applicable circuit type

Dedicated CT type
Rated primary side current value
VT

VT primary side

setting

voltage value
VT secondary side

voltage value
Current low-cut value Unit
Pulse output unit Unit
Display refresh period off is instantly updated.Unit

Averaging times.
Simple

measurement

setting

CO

Charge conversion setting
(Rate setting and price
unit setting)

Pulse conversion 1 setting

（Pulse conversion target,

factor, decimal point
position and display unit）

Pulse conversion 2 setting

（Pulse conversion target,

factor, decimal point
position and display unit）

Time setting
(Year, month/day,
hour/minute)

Initialization

Moving average time
Setting

Simple
measurement



Fixed voltage value.
Fixed power factor value. 

conversion factor

2

1p2w, 1p3w, 3p3w 00.typ 3p3w

5a, 50a, 100a, 200a, 400a, 600a
5

to

9999 02.sct 5

none, 220, 440, 3300, 6600, 11000,
22000, 33000

110, 220 110

0.1

to

19.9

1, 10, 100, 1k, 2k, 5k, 10k, 20k, 50k, 100k
off, 0.5, 1.0, 2.0, 4.0 06.ref 1.0
off, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024
off, on 08.smp off

to

9999.9 vlt 110.0

0.0

to

1.00 pf 1.00

0.00

0.000

to

99.999 10.co2 0.387

0.000

to

99.999

jpy, usd, eur, cny, krw

to

z, 0

to

to

to

to

z, 0

to

z, 0

to

to
to

9,  , -, (Space)

9999

to

9,  , -, (Space)

9999

to

9,  , -, (Space)

2099

12 31
23-59

a
c-t.d, c-1.d, c-2.d, c-t.a, c-1.a, c-2.a

0000
0000, 000.0, 00.00, 0.000
a

c-t.d, c-1.d, c-2.d, c-t.a, c-1.a, c-2.a
0000
0000, 000.0, 00.00, 0.000
a

2010
01 01
00-00

set, max, min, integ, m.pro, log, all 15.ini set

001〜120 16.avt 120

2nd display Initial value

01.c.rg 100a

03.v.rg none

v.rg2

04.cut 0.6

05.pl5 100

07.avg 8

11.chg 10.000
jpy

12.cv1 c-1.d
0001
0000
m3-1

13.cv2 c-2.d
0001
0000
m3-2

14.tim 2010
01 01
00-00

Remarks

1p2w: 1-phase 2-wire, 1p3w: 1-phase 3-wire,
3p3w: 3-phase 3-wire

Effective only when the dedicated CT type is 5A.
When the simple measurement is ON, sequentially

measure the reactive voltage, VT primary voltage,
and VT secondary voltage.
Unit: V

:

%

:

Wh

At ON, set voltage and power factor,
Frequency is 50 Hz fixed.

Can be set only at simple measurement ON.
Can be set only at simple measurement ON.
Unit

:

kg-CO2/kWh

Sequentially set the rate and price unit display.
4-digit price unit can be set.

Sequentially set the pulse conversion target, conver­sion factor, display unit. 4-digit display unit can be set.

c-t.d: Sum of pulse input counts

:

Pulse input count 1

c-1.d

:

Pulse input count 2

c-2.d

:

Sum of total pulse input counts

c-t.a
c-1.a

:

Total pulse input count 1

c-2.a

:

Total pulse input count 2

Year, month/day, and hour/minute should be set
continuously. If it was canceled in process, all
values will return to previous values. As soon as
setting hour and minute, the settings are reflected.

:

Initialize all setting values except time setting.

set
max: Initialize all the max value of parameters of

the present day.

:

Initialize all the min value of parameters of

min

the present day.

:

Initialize the total integral power consumption.

integ
m.pro: Initialize the measurement values in the Pro

level in measurement mode of the present day.

log: Initialize all the measurement histories.
all

:

Initialize set values other than clock time
and all measurement histories.

Set the moving average time of the Moving
average Current.
Cancel it during the input or set a value out of the
range, come back before a change.

Description

:

Sec

Operation setting modePro level

Item

Event input setting p.csp

Event input 1 NPN/PNP
input mode setting

Event input 2 NPN/PNP
input mode setting

Event input 1 N-O/N-C
input mode setting

Event input 2 N-O/N-C
input mode setting

Measurement start time (*1)

Measurement end time (*1)

Output terminal 1
function setting

Active power alarm output
(Upper/lower thresholds,
hysteresis and OFF-/ON-delay)

Regenerated power alarm
output
(Upper/lower thresholds,
hysteresis and OFF-/ON-delay)

Current alarm output
(Upper/lower thresholds,
hysteresis and OFF-/ON-delay)

Voltage alarm output
(Upper/lower thresholds,
hysteresis and OFF-/ON-delay)

Power factor alarm output
(Upper/lower thresholds,
hysteresis and OFF-/ON-delay)

Reactive power alarm output
(Upper/lower thresholds,
hysteresis and OFF-/ON-delay)

Integral power consumption
saving selection

Automatic rotation
setting

Measurement parameter
display selection

Display lighting time
Incorrect voltage wiring detection
Simple
temperature
setting

*1 It applies to the pulse input count, power consumption rate, pulse input ON time.
*2 When thresholds or hysteresis is set, the operating value which is converted from the setting value (%) is displayed.

Automatic rotation
Transition time

Temperature unit
Temperature
correction value

Setting range (1st display)

p.csp, h-on,
3-st

npn, pnp 31.pn1 pnp

npn, pnp 32.pn2 pnp

n-o, n-c 33.in1 n-o

n-o, n-c 34.in2 n-o

00-00 to 23-59

00-01 to 24-00

off, p.out,
alarm

0.0

to

150.0

0.0

to

19.9

0.0

to

99.9

0.0

to

150.0

0.0

to

19.9

0.0

to

99.9

0.0

to

120.0

0.0

to

19.9

0.0

to

99.9

0.0

to

120.0

0.0

to

19.9

0.0

to

99.9

0

to

100

0

to

19

0.0

to

99.9

0.0

to

150.0

0.0

to

19.9

0.0

to

99.9

-w, var.d,
var.g, var.a

off, on 61.rtt off
1

to

99 rtim 3

off, on 62.d.sl

to

99 63.dsp 0

0
off, on 64.v-e on
c, f 65.d-u c

to

-50.0

2nd display

30.ei5 p.csp

35.5tc 00-00

36.etc 24-00

50.o1 p.out

52.p.al

53.r.al

54.a.al

55.v.al

56.pf.a

57.q.al

60.i.sl -w

50.0 t.ad 0.0

(*2)

(*2)

(*2)

(*2)

(*2)

(*2)

Initial value

See the
remarks.

See the
remarks.

See the
remarks.

See the
remarks.

See the
remarks.

See the
remarks.

See the
remarks.

Remarks

:

Electric power consumption rate,

h-on

:

Pulse input ON time

npn

:

None voltage input

:

Voltage input

pnp
npn

:

None voltage input

pnp

:

Voltage input

:

Normally open

n-o

:

Normally close

n-c

:

Normally open

n-o

:

Normally close

n-c

Time setting later than the measurement end time cannot
be made.

Time setting earlier than the measurement start time cannot
be made.

p.out: Integral power consumption pulse output,
alarm: Alarm output,When selecting “alarm”, the screen

moves to the ON/OFF setting of various alarm outputs.
Sequentially set the upper/lower thresholds, hysteresis and

OFF-/ON-delay.
Upper threshold: 80.0％, Lower threshold: 0.0％,
Hysteresis: 5.0％, OFF-delay: 3.0 sec, ON-delay: 0.0 sec

Sequentially set the upper/lower thresholds, hysteresis and
OFF-/ON-delay.
Upper threshold: 80.0％, Lower threshold: 0.0％,
Hysteresis: 5.0％, OFF-delay: 3.0 sec, ON-delay: 0.0 sec

Sequentially set the upper/lower thresholds, hysteresis and
OFF-/ON-delay.
Upper threshold: 110.0％, Lower threshold: 0.0％,
Hysteresis: 5.0％, OFF-delay: 3.0 sec, ON-delay: 0.0 sec

Sequentially set the upper/lower thresholds, hysteresis and
OFF-/ON-delay.
Upper threshold: 110.0％, Lower threshold: 0.0％,
Hysteresis: 5.0％, OFF-delay: 3.0 sec, ON-delay: 0.0 sec

Sequentially set the upper/lower thresholds, hysteresis and
OFF-/ON-delay.
Upper threshold: 100％, Lower threshold: 0％,
Hysteresis: 5％, OFF-delay: 3.0 sec, ON-delay: 0.0 sec

Sequentially set the upper/lower thresholds, hysteresis and
OFF-/ON-delay.
Upper threshold: 80.0％, Lower threshold: 0.0％,
Hysteresis: 5.0％, OFF-delay: 3.0 sec, ON-delay: 0.0 sec

-w: Integral regenerated power consumption
var.d: Integral leading reactive power consumption
var.g: Integral lagging reactive power consumption
var.a: Integral total reactive power consumption

At ON, set the transition time.
Can be set only at automatic rotation ON.
Set it for each parameter of the measurement mode.

For the charge conversion value, pulse conversion 1 and 2,
integral regenerated power consumption, integral
leading/lagging/total reactive power consumptions and simple
temperature, these initial values are off

0 is

always lighting, Unit

Sequentially set the temperature unit and the temperature
correction value.
c:

Celsius

,

Unit: °C

,3-st: 3-STATE

: Min

, f:

Fahrenheit

,

.

Unit: °F

■Communication setting mode

Item Setting range (1st display) 2nd display Initial value Remarks

Protocol select compf: CompoWay/F,modb: Modbus
Unit No.
Baud rate
Data bit length (*1) Unit: bit
Stop bit length (*2) Unit: bit
Vertical parity
Time to wait for sending

*1 When protocol is Modbus, data bit length is 8-bit fixed.
*2 When protocol is Modbus, stop bit length cannot be set due to automatic setting.

When vertical parity is NONE, the length is 2, when vertical parity is ODD or EVEN, the length is 1.

compf, modb 80.psl compf
CompoWay/F: 0

1.2k, 2.4k, 4.8k, 9.6k, 19.2k, 38.4k
7, 8 83.len 7
1, 2 84.sbt 2
none, odd, even 85.prt even

to

99 86.sdw 20

0

to

99, Modbus: 1

to

99

81.u.no

82.bps 9.6k

1

Unit: bps

Unit: ms

■Protectedmode

Setting
content

Displayed value transition

0Yes
1Yes
2Yes

Move to setting mode Move to pro level

Yes
Yes
Yes

Limit content

Yes
Yes

No

Clear measurement history

Yes

No
No

Yes: Permission / No: Prohibited

Change setting content

Yes

No
No

Pro Level

Basic Level

Power ON

State Transition

Basic Level

Pro Level

Protect

Setting Mode

Measurement Mode

Setting Mode

Operation Setting Mode

Communication Setting Mode

■

Power ON

Measurement Mode

Basic Level

Pro Level

M＋SM＋S

*Example of 3-phase 3-wire
When the setting is 1-phase 2-wire, the current 2, 3 and the voltage 2, 3 are not displayed.
When the setting is 1-phase 3-wire, the 2nd. display of current and voltage changes. (e.g.

Total integral
power

Active power

0.000 0.0 0.000 0.000 0.000 0.0 0.0

*1 *1 *1 *1

Pulse input
count

consumption

M＋SM＋S

kw kwh a-r a-5 a-t v-r5 v-st

S

Electric power
consumption rate

cnt

0

0.000

Hwh p

S

*4*4 *4

Product
information

SSS S

c1flk

Current 1 Current 2 Current 3

M＋S

S

SS

M＋S

S

v2.0

M＋S

M＋S

S

*3*2 *3 *3

Pro Level

M＋S

U

M

Pulse input
ON time

M＋S

00-00

h-on

S

Simple
temperature

C

0.0

temp

M＋S M＋S M＋S

Time

Total integral
regenerated
power consumption

Total integral
total reactive
power consumption

The measurement mode can display a past measured
value. (*1 to *4)
While it is in condition to display a past measured value,
display the date and time and a measured value in turn.
Please refer to a right figure.

Active power

＊1

･Example of active power
･Alternately displays the time when maximum and minimum values were

recorded, and the maximum and minimum values, for each day.

･Reactive power displays only the maximum and minimum values of the

current day.

＊５

･When selecting others than “none”, sequentially set
VT primary side voltage and VT secondary voltage.

＊１０

0.000

kw

U

M

Maximum value

UU

02 25

00-00

M＋U

U

03 04

00-00

M＋U

U

03 05

00-00

M＋U

VT setting

none

03.v.rg

U

M

at “none” :O

VT
primary side
voltage value

At selection
excluding “none”

none

03.v.rg

Output terminal 1
function setting

p.out

50.o1

U

M

At selection
excluding “alarm”

p.out

At “alarm”:O

50.o1

･Example of output terminal 1 function setting
･When selecting

“alarm”, set each alarm to ON/OFF.

M＋S

S

M＋S

S

M＋S

S

：O

Minimum value

02 25

00-00

M＋U

U

03 04

00-00

M＋U

U

03 05

00-00

M＋U

VT
secondary side
voltage value

:O

110

v.rg2

Active power
alarm output

O

off

p.al

Regenerated
power alarm
output

off

r.al

Simple
measurement

＊６

U

08.smp

･When the simple measurement is ON, sequentially
set the fixed voltage value and fixed power factor
value.

Volt age

Current

alarm output

alarm output

O

O

off

a.al

a-s→a-n)

M＋S

S

M＋S

Pulse conversion
value 2

S

Moving average
current 1

M＋S

0.000 0.000 0.000

S

M＋S

ma-r ma-s

Pulse conversion
value 1

S

M＋S

S

S

M＋S

Moving average
current 2

Charge
conversion value

jpym3-1m3-203 05

Moving average
current 3

M＋S

S

CO

exchanged

2

value

S

0.0000.0000.0000.00017-15 55.0

M＋S

ma-t

co2

Voltage 1 Voltage 2

M＋S

S

Frequency

S

M＋S

M＋S

S

hz

Please refer to figure *1 to *4 for the transition that is in an internal state of *1 to *4.

Total integral
leading reactive
power consumption

M＋S

0.0

-kwh

S

0.0

kvh.a

*1

＊2

･On monthly display, the 1st. display alternately displays Year-Month of when the integral power consumption
was recorded, and the value of integral power consumption. The 2nd. display alternately displays “how many
months ago” and a unit.
･On daily display, the 1st. display alternately displays Month/Day of when the integral power consumption was
recorded, and the value of integral power consumption. The 2nd. display alternately displays “how many days
ago” and a unit.
･On hourly display, the 1st. display alternately displays Date-Hour of when the integral power consumption was
recorded, and the integral power consumption. The 2nd. display alternately displays “how many hours ago”
and a unit.

off

08.smp

M

at OFF : O

ON時：O

on

O

off

v.al

Total integral
lagging reactive
power consumption

Month/Day

Hour-Minute

Total integral
power consumption
10-digit display

M＋S

Fixed voltage
value.

110.0

vlt pf

Power factor
alarm output

off

pf.a

0.0

kvh.d

S

0.0

kvh.g

Alternate display

(1.5 sec auto)

Total integral
power consumption

0.0

kwh

U

M

00000

00000

S

Fixed power
factor value.

O

Reactive power
alarm output

O

off

q.al

M＋S

1.00

O

O＋M

(3 sec min.)

MAX/MIN

*2

Year-Month

Active power

Month/Day

Day-Hour

Monthly integral
power consumption
for past 13 months

M＋U

M＋U

M＋U

M＋S

10-03

0 m

SSS

U

U

09-02

-13 m

U

10-02

- 1 m

Charge

＊７

conversion setting

10.000

U

Rate setting

10.000

･Sequentially set the rate and price unit.
･For the price unit, after choosing from options, user can

change it to any unit.

＊１１

･Example of active power alarm output
･Sequentially set upper/lower thresholds, hysteresis and OFF-/ON-delay.
･The second displays of upper/lower thresholds and hysteresis switch to operating values

calculated from the threshold after 1.5 sec.

Months ago

Days ago

Hours ago

Daily integral
power consumption
for past 8 days

03 05

M＋U

02 25

- 8 d

M＋U

03 04

- 1 d

M＋U

11.chg

M

O O

rate

Active power
alarm output

U

Upper
threshold

Alternate display

(1.5 sec auto)

Alternate display

(1.5 sec auto)

Alternate display

(1.5 sec auto)

0 d

U

U

U

Price unit setting
(Selection)

80.0

52.p.al

M

O

80.0

ov.th

M＋S

jpy

Lower
threshold

Protect

Setting Mode

Protect setting

0

prtct

unit

Integral power

Integral power

Integral power

M＋U

M＋U

M＋U

0.0

un.th

*3

consumption

Unit

consumption

Unit

*4

consumption

Unit

Hourly integral
power consumption
for past 25 hours

5-17

0 h

U

U

4-16

-25 h

U

5-16

- 1 h

Price unit setting
(Arbitrariness)

jpy

unit

Hysteresis OFF-delay ON-delay

O

5.0

al.hys

O

O

Reactive power

S

0.000prolv

kvar

*1 *1

Month/Day

Hour-Minute

Month/Day

Days ago

O

3.0

of.dly

Setting Mode

Operation Setting Mode

Basic Level

M

(3 sec min.)

0.000

a-r

M

Measurement stop

Measurement start

M

(3 sec min.)

Pro Level

Communication Setting Mode

M＋SM＋SM＋S

M＋S

S

S

Alternate display

(1.5 sec auto)

Alternate display

(1.5 sec auto)

Voltage 3

Power factor

1.00

Current 

MAX/MIN/AVE

Electric power

consumption rate

＊3

0.0

v-tr

pf

S

M＋SM＋SM＋S

Unit

Current

U

Maximum value Minimum value

UU

M＋S

03 05

00-00

M＋U

U

02 25

00-00

M＋U

U

03 04

00-00

M＋U

U

03 05

00-00

M＋U

･Alternately displays the time when maximum and minimum values were

recorded, and the maximum and minimum values, for each day.

･Moving average current displays only the maximum value.
minimum value is non-compliant. (display "-"mark)

Pulse conversion 1

＊８

setting

c-1.d

12.cv1

U

M

Pulse conversion
target 1

c-1.d

･Example of pulse conversion 1 setting
･Sequentially set the pulse conversion target, factor, decimal point position

and display unit.

O

0.0

on.dly

Factor setting 1

O O O

targ

0001

slp

-- --

-----

S

M＋U

02 25

00-00

M＋U

03 04

00-00

M＋U

03 05

00-00

M＋U

Decimal point
position setting 1

0000

Automatic rotation

U

Automatic rotation

transition time.

U

U

U

dp

off

61.rtt

M

atOFF：O

off

61.rtt

atON：O

Display unit
setting 1

m3-1

Transition time

M＋S

S

M＋S

S

M＋S

S

＊１２

･When the automatic rotation is ON, set the

Applicable
circuit type

M＋SM＋S

3p3w

00.typ

Event input
setting

M＋S

p.csp

30.ei5

Simple
temperature setting

S

c

65.d-u

*13

Protocol
select

compf

80.psl

SS S

＊９

O

unit

O

3

rtim

Dedicated
CT type

100a

S

01.c.rg

Pro Level

prolv

U

S S

M＋S

S

M＋S

Rated primary
current value

Moving average
time Setting

S

5

02.5ct

120

16.avt

S

none

03.v.rg 04.cut

＊5 ＊6

Initialization

S

5et

M＋S M＋S

15.ini

VT setting

M＋S

Current low-cut
value

M＋S

S

M＋S

0.6

Time setting

S

2010

14.tim

*9 *8 *8

M＋S

S

M＋S

Pulse output
unit

100

05.pl5

Pulse conversion 2
setting

S

c-2.d

13.cv2

M＋S

S

M＋S

Display refresh
period

06.ref

Pulse conversion 1
setting

S

c-1.d

12.cv1

1.0

M＋S

S

M＋S

Averaging times

07.avg

Charge
conversion setting

S

10.000

*7

8

11.chg

M＋S

S

S

M＋S

Simple
measurement

off

08.5mp

conversion

CO

2

factor

0.387

10.co2

M

Event input 1
NPN/PNP input
mode setting

M＋S

pnp

Incorrect voltage
wiring detection

S

31.pn1

on

64.v-e

S

M＋S

O

Unit No.

1

8 lu.no

Time to wait
for sending

SSS

20

86.5dw

M＋SM＋SM＋S

＊４

･

Example of electric power consumption rate

･The 1st. display alternately displays Month/Day

of when electric power consumption rate was re­corded, and the electric power consumption rate.
The 2nd. display alternately displays
days ago

M＋S

S

M＋S

Baud rate

9.6k

82.bp5

Vertical parity

even

85.prt

Electric power
consumption rate

0.000

U

02 25

M＋U

03 03

M＋U

03 04

M＋U

” and a unit.

Event input 2
NPN/PNP input
mode setting

Display lighting
time

S

M＋S

Hwh p

M

U

- 8 d

U

- 2 d

U

- 1 d

pnp

32.pn2

0

63.dsp

Data bit
length

Stop bit
length

M＋S

S

M＋S

83.len

84.5bt

S

7

2

“how many

Event input 1
N-O/N-C input
mode setting

n-o

33.in1

S

Measurement parameter
display selection

on

62.d.sl

M＋S

S

Event input 2

M＋S

S

N-O/N-C input
mode setting

Automatic rotation
setting

*12

n-o

34.in2

off

61.rtt

M＋S

S

M＋S

Measurement
start time

00-00

Integral power
consumption
saving selection

S

35.5tc

-w

60.i.sl

M＋S

S

M＋S

Measurement
end time

24-00

Reactive power
alarm output

S

36.etc

80.0

57.q.al

M＋S

S

M＋S

Output terminal 1
function setting

p.out

*10

Power factor
alarm output

S

56.pf.a

50.o1

100

M＋S

S

M＋S

Active power
alarm output

*11

Voltage alarm
output

S

80.0

52.p.al

110.0

55.v.al

Please refer to figure *5 to *13 for the transition that is in an internal state of *5 to *13.

■Unit to save each measured value

The KM50 model has a function to save various measured values in EEPROM every five minutes, every day
or every month. The list of measured values and saving units is shown below:

Measured value

Integral

power consumption

Active power, current, voltage and
power factor
(Maximum and minimum values)

Moving average current
(Only the maximum values)

Pulse input count
Electric power consumption rate
Pulse input ON time

Integral regenerated power consumption
Integral reactive power consumption

Total pulse count inputs

Saving

period

Save two days’ measured values every 5 min.

5 min.

Save 25 hours’ hourly values which are converted from

1 hour

measured values saved every 5 min.

Save 8 days’ values measured between 00:00 and 24:00.

1 day

Save 13 months’ values measured for a month.

1 month

Save 8 days’ values measured between 00:00 and 24:00.

1 day

(After saving, measured values are reset.)*

 ー

Save the current maximum values of the moving average
time.
(The moving average current with a product Ver.3.0.)

Save two days’ measured values every 5 min.

5 min.

Save 8 days’ values measured between 00:00 and 24:00.

1 day

Save two days’ measured values every 5 min.

5 min.

Save only items selected in the setting.

Overwrite save the measured value every 5 min.

5 min.

Note 1. At the time of power failure, the clock time data is retained for 7 days.
Note 2. User can check the data every 5 min. only through communication.

■Error indication

Description of error

KM50 internal clock time has not
been set.

Built-in memory error
(RAM error) (*1)

Display

e-t1

Indicates error at startup and “STOP” is
turned ON. Measurement stops and
operation disabled during error indication.

e-m1

Measurement stop, operation disabled

EEPROM error (*1) e-m2 Measurement stop, operation disabled Hardware repair (*2)

Operation

EEPROM data failed (*1) e-m3 Measurement stop, operation disabled Hardware repair (*2)

e-m4 Measurement stop, operation disabled Hardware repair (*2)
e-s1 Displays error and measurement value

alternately and continues measurement.

alternately and continues measurement.

alternately and continues measurement.

alternately and continues measurement.

Time setting

2010

14.tim

U

M

Year Month/Day Hour/Minute

O

2010

14.tim

･Sequentially set the year, month/day and hour/minute.

01 01

14.tim

O

00-00

14.tim

O

Calibration value error (*1)
Excessive voltage input (*3)

Excessive current input (*3) e-s2 Displays error and measurement value

Frequency input error (*3) e-s3 Displays error and measurement value

Incorrect wiring detection (*4) e-s4 Displays error and measurement value

*1 When any of e-m1 – m4 errors occurs, all outputs stop and any key operation is not accepted.
*2 Consult your OMRON representative.
*3 An error will occur when the input of voltage exceeds 110% of the rated value, current exceeds 120% of

the rated value, frequency is below 45 Hz or more than 65 Hz.

＊１３

Simple
temperature setting

c

65.d-u

U

M

Temperature
Temperature
unit

･Sequentially set the temperature unit and

temperature correction value.

correction

value

OO

c

65.d-u

0.0

t.ad

When the voltage input is 20 V or less, frequency error isn’t displayed.
When VT is set, the set value of secondary voltage becomes the rated voltage.

*4 For e-54 error, only when the incorrect voltage wiring detection is set to ON, the error is displayed.

■Troubleshooting

Phenomenon Description Point to be checked

Voltage and current are measured
but electric power is not correctly
measured.

Has CT (Current
Transformer) been
correctly wired
(not in reverse)?

Is the voltage
phase sequence
correct?

If negative electric power is measured, it might be
all the CTs have been mounted oppositely. On the
other hand, if the measured value is nearly 0, it might
be one of the CTs has been mounted oppositely.

If the voltage phase sequence is not correct,
electric power cannot be measured correctly.
Perform correct wiring.

Regenerated
power alarm output

M＋S

80.0

*11

Current alarm
output

S

*11*11*11*11

53.r.al

110.0

54.a.al

S

M＋S

Remarks

Restoration method

Time setting

Hardware repair (*2)

Restore the input signal
within to the rated range.

Restore the input signal
within to the rated range.

Restore the input signal
(voltage) within to the
rated range.

Correct the input signal
(voltage) wiring in phase
sequence.

S

M＋S