Usb Port; Input Voltage - Omron KM1 User Manual

0BPreparation
● USB port ● USB port
Connecting Model KM1 and a PC via a USB cable can make settings and read measurement Connecting Model KM1 and a PC via a USB cable can make settings and read measurement
values. In addition, supplying power from a PC via USB (driving USB bus power) can make values. In addition, supplying power from a PC via USB (driving USB bus power) can make
settings only. For the functions available via a USB port, refer to the table below. settings only. For the functions available via a USB port, refer to the table below.
*1. For the USB cable, use mini-USB type B. *1. For the USB cable, use mini-USB type B.
*2 *2 If settings have been made via USB, remove the USB cable from the product, and then If settings have been made via USB, remove the USB cable from the product, and then
supply the power to it. When reading measurement values via USB communication, supply the power to it. When reading measurement values via USB communication,
remove the USB cable once after the setting change, and then connect the product again. remove the USB cable once after the setting change, and then connect the product again.
Without power
voltage
With power voltage
*3 Connect the USB cable only when USB communication is required. If the USB cable is
always connected, and the power supply to the product is turned ON/OFF due to
instantaneous voltage drop, etc., the product cannot be started up normally to make
measurements.
*4 Do not carry out RS-485 communication during USB communication. (Doing so may return
a response.)
● Input voltage
PMU1A PMU2A
(Electric (Power
power) two-system)
○
Connect between terminals (21), (22), (23), and (24) in the measurement master. When
using PMU2A (power two-system) to make measurements of two systems, perform wiring
between terminals [9], [10], and [11]. However, PMU2A (power two-system) does not support
3-phase 4-wire.
* When wiring, avoid error in the order of phases. An error will cause incorrect
measurement.
[PMU1A (electric power)]
Single
phase
2-wire
P1
L
P2
N
P3
－
P0
－
* Indication of voltage: V
Example: Vrs indicates a voltage between R and S.
2-26
When one product is used When one product is used
For all models, only settings can be
made.
For all models, settings and reading of
measurement values can be performed.
EMU8A CTD8E
(Pulse/temperature) (CT
expansion)
×
Single 3-phase 3-phase
phase 3-wire 4-wire
3-wire
R R R
N S S
T T T
N
－ －
: Indicates a voltage between [A] and [B].
[A][B]
When multiple units are connected When multiple units are connected
Only the measurement master can be
set.
Connecting the measurement master
can perform settings and reading of
measurement values. Settings of the
slave connected to the measurement
master and reading of the measurement
values can be performed.
×
: With input in 2 systems
PMU2A (power two-system)]
Single
phase
2-wire
1-P1
2-P1
⑨
L
1-P2 2-P2
⑩
N
1-P3 2-P3
⑪
－
O: With input X: Without input
Single 3-phase
phase 3-wire
3-wire
R R
N S
T T