Panasonic KW4M, Руководство пользователя

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8
Chapter 4 Various Functions
4-1 LOCK mode
It is the mode makes <MODE>key and Select keys unable.
Use when you want to fix one of the measurement displays (For all
displays).
When you press <SET>key continuously for about 3sec., the “LOCK”
indicator lights and <MODE>key and Select keys become locked (pressing
them will have no effect).
Press <SET>key continuously for about 3sec. again to release Lock mode.
The “LOCK” indicator goes off and the lock mode is released (unlocked)
4-2 CT Direction Notification (POWER Measurement)
This shows the connection condition of CT and notices wrong voltage or
wrong connection of CT wiring.
・
“CT1(CT2)” lights if the input voltage is corresponding to the direction of
the current.
・
“CT1” lights if the voltage between 1 and 2 is corresponding to the direction
of L1-phase current.
・
“CT2” lights if the voltage between 2 and 3 is corresponding to the direction
of L2-phase current.
＊
It does not light if the load current is under the cutoff current (CUTA) or if
there is some distortion by harmonic or waveform.
4-3 Counter function (PULSE measurement)
4-3-1 Operation mode
Maintain output hold count HOLD
[Output] OFF ON
[Counting] possible
[Addition] 0 1 2 3
・・・
n-2 n-1 n n+1 n+2 n+3
n: Preset value
(1) Output control is maintained after count-up completion and until reset. However counting is
possible despite of count-up completion.
(2) It reverts“0” after counting up full scale, but output control is maintained. However output is OFF
if count value or preset value is changed.
4-3-2 Change the Preset Value
It is possible to change the preset value even during counting. However note the following points.
◇
When the pre-scale value is “1.000”.
（
PSCL=1.000
）
(1) If the preset value is changed to the value less than the count value, counting will continue until
it reaches full scale, returns to “0” and then reaches the new preset value.
(2) If the preset value is changed to “0”, it will not count up at start with “0”. It counts up when the
counting value comes to “0” again (after reach to full scale). However output is OFF if count
value or preset value is changed.
(3) When the count value is fixed, output is changed according to the changing of preset value as
below.
①
If the preset value is changed to the value less than the count value or same as count value,
output is ON.
（
Count value
≧
Preset value
）
②
If the preset value is changed to the value more than the count value, output is OFF.
（
Count value
＜
Preset value
）
◇
When the pre-scale is not “1.000”.
（
PSCL
≠
1.000
）
Even if the preset value is changed after counting to full scale, output is not changed.