Indication And Function Of Leds; Circuits Measuring In 1P2W - Mitsubishi EMU4-BM1-MB User Manual

3.2 Indication and function of LEDs

The names and operations of LEDs are as follows.
Name Color
RUN LED Red
MEA. A1 LED Red
MEA. A2 LED Red
(Note 2)
ALM. A1 LED Red
ALM. A2 LED Red
(Note 2)
(Note 1) For details, refer to Chapter 14 "Error codes" of "User's Manual (Details)".
(Note 2) Only in the case of single-phase 2-wire system, these indicate the status of the measured circuit of the current sensor in
No.1 side of the circuit A2. (See 3.3)
3.3

2 circuits measuring in 1P2W

This unit can measure 2 circuits in the case wiring type 1P2W.
It is a function to measure the 1P2W of 1-N and 3-N branched from 1P3W. (Reference to Figure 3.3.2)
2 circuits measuring can be conducted when current sensor is connected to 1 side (1K, 1L) and 3 side (3K, 3L).
(Reference to Figure 3.3.1 and 3.3.2)
Please reference to 5 chapter about wiring.
Please reference to 6.1 section and EMU4-D65 User's Manual (Details) when setup for measuring 2 circuits
You can only measure same primary current value in 1 side and 3 side when 2 circuit measuring mode.
Circuit A1
The circuit connected to
1K and 1L of SENSOR
A becomes circuit A1.
Circuit A2
The circuit connected to
3K and 3L of SENSOR A
becomes circuit A2.
Figre3.3.1
Function
Indicate operating status of this unit.
Indicate measuring status of the circuit
A1.
Indicate measuring status of the circuit
A2.
Indicate occurrence status of upper/lower
limit alert of the circuit A1.
Indicate occurrence status of upper/lower
limit alert of the circuit A2.
Power
supply
side
6
Status
ON: Normal condition
OFF: Power off or hardware failure (Note 1)
ON: In the middle of measuring
OFF: Halting measurement
ON: In the middle of measuring
OFF: Halting measurement
ON: An error occurs (Note 1)
Blink: Upper/lower limit alert is issued
OFF: No alert
ON: An error occurs (Note 1)
Blink: Upper/lower limit alert is issued
OFF: No alert
1
N
3
k K K
L
l
Load A1
RS-485(MODBUS RTU)
Figre3.3.2
Load
side
k K
l L
Load A2