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5.Operation
5.2 Usage According to Purpose(Alarm, Periodic Active Energy, Rolling Demand, Operating Time,
Password, etc.)
Display of operation time
The measurement time is integrated according to the value set to the target for counting operation time (AUX, A, and V)
and displayed as the load operation time.
To display the operation time, the operation time display setting should be configured in advance.
The operation time is counting, even if operation time display setting is OFF.
(For setting of the operation time display, refer to page 34.)
This is displayed when the button is pressed repeatedly in the operation mode to switch the measurement displays.
Resetting the operation time to zero
Showing the operation time 1 or the operation time 2 on the display and then holding down the button for 2
seconds resets the operation time to zero.
(Only the displayed operation time is reset to zero.)
When the password protection setting is enabled, the operation time is reset to zero after the password is entered.
All the operation times can be reset to zero also via communication. (In this case, the password is not necessary)
Display and operation of digital input/output status
The digital status can be displayed by inputting the switching signal of the breaker and the alarm signal of the over current
relay to the digital input (DI) terminal.
The digital output (DO) terminal opens and closes the contact by communication control.
To display the digital input/output status, the digital input/output status display setting should be configured in advance.
(For setting of the digital input/output display, refer to page 33.)
■
Display examples
These are displayed when the button is pressed repeatedly in the operation mode to switch the measurement displays.
■
Digital input reset method
The method for maintaining the digital input status differs according to the digital input reset method.
Reset method
Cancelation method
Auto reset (Auto)
If the digital input turns OFF (Open), the digital input status
automatically turns OFF (Open).
Latch (HoLd)
After it is detected that the digital input is ON (Closed), the digital input
status is kept ON (Closed) until executing latch cancelation, even when the
digital point input turns OFF (Open).
When alarm contact such as ACB are input, alarm generation
status continues on this measurement instrument even when an alarm
generation stops so that an alarm cannot be missed.
■
Digital input conditions
The following are the digital input conditions
.
Input conditions
Terminals DI
Rating
24VDC(19 to 30VDC),7mAor less
ON (Closed) / OFF (Open) time
30ms or longer for both ON and OFF
Releasing the digital input latch
Holding down the button for 2 seconds while the digital input display (DI) is displayed releases the digital input
(DI) latches collectively.
The digital input latches can be released also via communication.
RESET
DISPLAY
DISPLAY
RESET
Operation time 1
Operation time
2
When the following set target for counting the operation time
exceeds the threshold, the operation time 1 and operation time
2 are integrated.
For example, if you want to check both of the operation time on a monthly basis (the value which is periodically reset)
and the cumulative operation time from when the system started to operate (the value which is not periodically reset),
use the operation time 1 and operation time 2 accordingly. If it is unnecessary to use the operation time 1 and operation
time 2 at the same time, monitor either of them.
＜
Using the operation time 1 and operation time 2 as appropriate
＞
Item
3-phase 4-wire 1-phase 2-wire
Others
AUX
(Auxiliary power)
AUX
AUX
AUX
A
(Current)
A
AVG
A
A
AVG
V
(Voltage)
V
AVG
（
L-N
）
V
V
AVG
（
L-L
）
＜
When the optional plug-in module “ME-0052-SS96” is installed
＞
Digital input display
（
DI1 to DI5
）
Digital output display
（
DO1
、
DO2
）
：
Digital closed
：
Digital opened
Digital input/ output status
