Omron ZN-KMX21 Series Instruction Sheet page 3

■ Mounting
This product is precision equipment. Be careful not to drop the product when
mounting it.
Do not drop the product or apply strong impact to the product.
If strong impact is applied to the product, stop using the product.
1. When using mounting screw holes
M3
screws
The unit screw hole depth is 4 mm. Be careful not to tighten the screw for more
than 4 mm.
The product can be mounted with magnet by mounting mounting magnets
(ZN9-EM01-S, sold separately) to the screw hole. (tightening torque: 0.4 N/cm to
0.6 N/cm)
Do not stress to the sensor head cables, when mounting the magnet.
Flat head screws (M3x6)
Mounting magnets
2. When using screw hook holes
There are two hook holes below the convex section of the upper unit. Use M3 screws
to hook the screw head on the screw hook holes. Set an interval of 2.5 mm or more
between the bottom of the screw head and the wall surface.
2.5 mm min.
Enlarged view of the hook screw
3. Floor installation
Use the product on a desk, etc.
Be careful of the installation location not to drop the product.
4. Inserting the SD card
Insert an SD card into the SD card connector at the bottom of the unit. Insert it with
the terminal side of the SD card to the front side of the unit.
5. Mounting the alarm output terminal
Connect OUT and GND to the load according to the output specifications. Insert the
signal line to the alarm output connector and tighten it with flathead screwdriver.
6. Connecting the sensor to the power monitor/sensor KM□□
Connect the terminal part of the provided dedicated cable to KM□□. Connect the
RS-485(+) side to RS-485(+) of the KM□□side, and the RS-485(-) side to
RS-485(-). (Recommended tightening torque: 0.69 to 0.88 Nm)
Insert the connector (male) into the sensor head connector (female) of the right side
of the unit.
7. Turning ON the power supply of KM-□□
Turn ON the power supply of the KM series first to initialize the sensor unit
normally.
8. KM series settings
Set the KM series as shown below. For details, refer to the instruction manual of
the KM series.
Communication Speed: 38.4 kbps
Data Bit Length: 7-bit
Stop Bit Length: 2-bit
Vertical Parity: EVEN
When connecting multiple KM series, assign unique consecutive numbers for the
unit No. of each device.
9. Turning ON the power supply of the unit
(1) Insert the plug of the AC adapter or DC cable into the power supply input
terminal of the unit.
(2) For AC adapter, connect the AC plug into an outlet (100 VAC to 240 VAC).
For DC cable, connect the cable with white line to the power supply (24
VDC±10%) and cable without a line into the 0 V.
DC power supply
AC adapter DC power supply
10. Unit Setting
Select UNIT in FUN mode and input the number of the connected KM series units.
The Power Sensor Station resets itself to apply the setting, when the mode is
changed from FUN to THR.
■ Transition of Major Menu Displays
Press the MODE key twice.
Transition is not available during recording.
RUN mode
TOTAL
Momentary
power total sum
Elapsed time Elapsed time
Auto switching
(min., sec.)* (day, hr.)*
Momentary power Momentary power
total sum
total sum
* The elapsed time from the measurement start.
Displayed in "min., sec." units during the first hour.
- - -
Auto switching Auto switching
Average of recorded Maximum of recorded
Minimum of recorded
momentary power momentary power momentary power
total sum total sum
total sum
Auto switching
Electricity rate total
sum/CO2 emission
conversion value
Conv. unit
Uno1*
Displayed up to No. 31
in the same way.
Momentary power
* Represents "Unit No. 1".
Uno1*
Momentary power
total sum
Integrated power
total sum
Threshold value
Integrated power
total sum
Threshold rate* * The current power ratio of integrated
power total sum for the configured
threshold value.
Number of data
items recorded in
the internal memory
Current time
MODE key
MODE key
FUN mode THR mode
CYCLE INT H
Setting value (kWh)
UNIT
REC
INTEG
INIT
ETC
Displayed only
when ETC setting
RESTR
Displayed only when
is DISP
YEAR
CLOCK setting is
BCKUP
MONTH
CLOCK
DAY
IP
TIME
RATE
Displayed only
IP1
when IP setting is
IP1 to IP4
CONV
SUB 1
SUB1 to SUB4
UTOFS
REREC
DISP
DISP