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21
1
2
E
XC +
EX
C
CO
M
2
L 3
L 2
L 1
ZE
RO
COM1
HO
LD
6
INPUT
OUTPUT
LOAD CELL
7
8
9 10 11 12
1
2
3
4
5
+
8. COM1
6. ZERO
ON
OFF
Switch or Relay
point input
BS-3520 Inside
10ms or longer
External zero
LO
LOW
HIGH
OK
HI
HOLD
ZERO
BS
DIGITAL INDICATOR
-3520
M
1
2
3
4
LO
LOW
HIGH
OK
HI
HOLD
ZERO
BS
DIGITAL INDICATOR
-3520
M
1
2
3
4
6-5 Digital Zero Calibration
6-5-1 Digital Zero Calibration Method
It shall be executed when there is nothing on the load cell.
Range of zero calibration is 100% of max capacity. It is remembered even when the power is
turned off.
Push No.3 key while pushing
No.4 key.
Zero calibration is completed.
Zero
calibration
cannot
be
conducted
under
Key
Lock
status
thus
it
shall
be
executed
after
cancelling
the
Key
Lock.
Zero
calibration
is
not
conducted
on
the
hold.
When
offset
value
is
set
at
function,
the
value
other
than
offset
value
shall
be
executed
as
zero.
Setting
shall
be
conducted
at
function
in
order
execute
initial
zero
when
turning
on
the
power.
Zero
calibration
may
not
be
conducted
when
there
is
mechanical
interference
or
load
cell
abnormality.
6-5-2 Zero Calibration Method by External Input
It shall be executed when nothing is on the load cell.
Relay contact point or contactless switch such as switch or open collector shall be used.
Signal shall be cut off after continuous external input of 10ms or longer.
Please take caution as zero is continuously executed when signal is continuously input not as a pulse.
Range of zero calibration is 100% max capacity. It is remembered even when power is turned off.
Terminal No.
Name
Contents
6
ZERO
Control terminal of zero function
Valid at COM1 terminal or terminal block (or on coin)
8
COM1
Common terminal of external control