Entron EN1000 series

ENTRON Controls, LLC. • 700120S • Page 101
8.2.4 PRIMARY AUTO-RANGE COMPENSATION OR MONITORING MODE
WITH CURRENT TRANSFORMER (cont.)
COMPENSATION
With
C.rC.r
C.rC.r
C.r
..
..
.=
1010
1010
10, the control will operate in PRIMARY AUTO-RANGE COMPENSATION mode.
When the control operates in this COMPENSATION mode and if
rr
rr
r
.A..A.
.A..A.
.A.=
00.9900.99
00.9900.99
00.99, the value of
PERCENT CURRENT setting in the weld schedules should be input as the percentage [%] of
maximum current output of the control. Otherwise,
rr
rr
r
.A..A.
.A..A.
.A. should be input with the assumed
maximum output of secondary current in [kA] value, and the value of PERCENT CURRENT
setting in the weld schedules should be input as the desired secondary output current in [kA]
value of the control.
MONITORING
With
C.rC.r
C.rC.r
C.r
..
..
.=
11
11
1
11
11
1, the control will operate in PRIMARY AUTO-RANGE MONITORING mode.
When the control operates in this MONITORING mode, the control will only display the weld
current after a weld but will not compensate the current error. The value of PERCENT CURRENT
setting in the weld schedules should be input as the percentage [%] of maximum current output
of the control.
8.3 DISPLAYING CURRENT AFTER WELD SEQUENCE
It is not necessary to program any special function or PROCESS OUTPUT to display CURRENT
after the weld. Simply use the SELECT push button to display PERCENT CURRENT parameter
before initiation. The control will display the measured CURRENT at the end of the sequence.
Before initiation of the sequence, select PERCENT CURRENT using the SELECT push button.
After the end of sequence, the DATA display may show average RMS CURRENT in [kA] or
[%]. If necessary, the control will display the range or tap indicator (
t.-UPt.-UP
t.-UPt.-UP
t.-UP or
t.-dnt.-dn
t.-dnt.-dn
t.-dn) messages.
The display may be toggled between CURRENT in [kA] and real PHASE SHIFT PERCENT
firing in [%] by pressing the DATA push buttons as follows:
• Pressing DATA 1s push button will show PERCENT;
• Pressing DATA 10s push button will show last measured CURRENT in [kA];
• Pressing any other push button will clear the display.
The following messages are readily available at the end of the sequence.
Average RMS CURRENT in [kA] – Shown on the display if the control is operating in the
proper mode and a weld has been made. A valid operating mode for [kA] display is any
mode that allows programming the control in [kA] in the weld schedule.
PHASE SHIFT in [%] – Selectable only if RMS CURRENT is displayed at the end of a weld.
To show PERCENT, simply press the DATA 1s push button. This is useful to determine if
the control has enough headroom to compensate for current losses whenever needed.
Toggle between RMS CURRENT in [kA] and PHASE SHIFT in [%] – RMS CURRENT in
[kA] and PHASE SHIFT in [%] are selectable only if average RMS CURRENT is displayed
at the end of a weld. To show PERCENT, simply press the DATA 1s push button. To show
last measured RMS CURRENT in [kA], simply press the DATA 10s push button. To clear
display, press any other push button.