A 1179, A 1257, A 1395 Flex current clamps
10
State before
Action to change the state
New state
POWER OFF
Press the key
NORMAL
POWER OFF
Connect external power supply
CHARGE
NORMAL
Ubat < 2.1 V
LOW BATTERY
NORMAL
Connect external power supply
NORMAL
LOW BATTERY
Connect external power supply
NORMAL
NORMAL
Long press the key
POWER OFF
NORMAL Long press the key
CHARGE
EXTERNAL
NORMAL
Long press the key
POWER OFF
POWER OFF
Insert the batteries into the battery
compartment
POWER OFF
CHARGE
Press the key
NORMAL
Table 6.2 Allowed change state table regarding power supply
6.2.2 A1179/A1257/A1395 states regarding measuring ranges
Changing of the measuring range is done just by pressing the key. After switch
ON (also by pressing the key) module is at 20/30 A range. If you pressing the key again
the 200/300 A range is selected etc. (see Table 6.4).
A1179/A1257/A1395 module has overrange current detection as noted in
chapter 1. It means that A1179/A1257/A1395 module informs the user if the selected
range is too small for measured current amplitude (peak value). If the overrange current
was detected but currently it is not present any more the user can reset blinking Range
LED by pressing the key (see Table 6.5). If the overrange is present also when the key
is pressed the range will be changed to the less sensitive range (see Table 6.6).
State indications:
State
How is it indicating?
What is heppening?
RANGE
2000/3000 A
2000/3000 A Range LED diode is
ON. Others are OFF.
A1179/A1257/A1395 is working
on 0.5/0.333mV/A rms range.
RANGE
200/300 A
200/300 A Range LED diode is
ON. Others are OFF
A1179/A1257/A1395 is working
on 5/3.33mV/A rms range.
RANGE 20/30 A 20/30 A Range LED diode is ON.
Others are OFF
A1179/A1257/A1395 is working
on 50/33.3mV/A rms range.
OVERRANGE
DETECTION
20/30 A
20/30 A Range LED diode is
blinking.
A1179/A1257/A1395 has
detected an overrange at 20/30
A range.
OVERRANGE
DETECTION
200/300 A
200/300 A Range LED diode is
blinking.
A1179/A1257/A1395 has
detected an overrange at
200/300 A range.
OVERRANGE
DETECTION
2000/3000A
2000/3000 A Range LED diode is
blinking.
A1179/A1257/A1395 has
detected an overrange at
2000/3000 A range.
Table 6.3 Range state indications
State before
Action to change state
New state
