CONNECTION
4
٨
Wiring diagram
Note: The terminal
ԙ
, 0V of power supply, is isolated from 0V of input /
output circuitry for noise immunity. However, if you except to share
the power supply with the output loads, connect terminals
ԙ
and
ԝ
,
terminals
ԙ
and
ԡ
, or terminals
ԙ
and
ԫ
to make 0V common.
*1
or
Low: 0 to 1V, High: 4.5 to 30V, or open
Non-voltage contact or NPN open-collector transistor
Symbols ... D
Z
D
T
r
: Reverse supply polarity protection diode
: Surge absorption zener diode
: NPN output transistor
Pin arrangement
٨
I/O circuit diagram
٨
External channel select truth table
٨
RS-232C wiring diagram (GD-C2 only)
Note: 0V of power supply is isolated from 0V of input / output circuitry. To share the
power supply with a load, both the 0V terminals should be short-circuited.
Channel No.
Input
IN-0
IN-1
IN-2
1
L
H
H
2
H
L
H
3
L
L
H
4
H
H
L
5
L
H
L
6
H
L
L
7
L
L
L
8
H
H
H
L: Low (0 to 1V), H: High (4.5 to 30V, or open)
TXD
RXD
RS
CS
SG
: Transmit date, command
: Receive date, command
: Request-to-send
: Clear-to-send
: Signal ground
3
4
5
2
7
8
9
6
1
9-pin connector (female)
TXD
RXD
Not connected
RS
Not connected
Not connected
CS
Not connected
SG
POWER
ALM.
OUT-1
OUT
-2
PANEL
EXT.
RS-232C
NORM.
OFD.
RUN
SET
0-ADJ.
SET
-2
SENS.
CH-SELECT
TIMER
SET-MODE
SET
-1
CH
11
12
13
14
15
16
17
18
19
20
1
2
3
4
5
6
7
8
9
10
+
-
Load
Load
Load
+V
0V (Note)
OUT-1
OUT-2
ALM. (Self-diagnosis output)
0V (Note)
IN-0
IN-1
IN-2
0V (Note)
30V DC or less
12 to 24V DC
r
10%
*1
*1
*1
+
-
External channel
selected inputs
+
-
Load
White
Shield
White
Black
Shield
RUN / SET
SET-1
SET-2
ANS. OUT (Answer-back output)
30V DC
or less
Sender Receiver
*1
*1
*1
0V (Note)
Color code
External setting input
+ V
0V (Note)
100mA max.
12 to 24V DC
r
10%
*1
Load
+
-
30V DC
or less
0V (Note)
Input
Output
OUT-1, OUT-2
ALM., Answer-back
IN-0, IN-1, IN-2
㨮
RUN / SET, SET-1, SET-2
+
-
Users' circuit
Internal circuit
D
Tr
Z
D
Sensor circuit
TXD (3)
RXD (2)
RS (7)
CS (8)
SG (5)
TXD
RXD
CS
RS
SG
Connector pin No.
Controller
External device
SENSITIVITY SETTING
5
Teaching through operation panel
٨
The teaching can also be performed by external input signals.
Notes: 1)
2)
3)
4)
The order of the above procedure at
ԝ
,
Ԟ
and
ԟ
is arbitrary.
The 'SET-1 key' searches the one-sheet level, and the 'SET-2 key' the
two-sheet level. After having selected the SET mode, only by pressing
either one once, the one-sheet or two-sheet levels are not undated. Af-
ter having pressed the 'SET-1' and 'SET-2' keys once in SET mode, as
long as it is in SET mode, the one-sheet or the two-sheet level is updat-
ed by pressing either SET keys. The moment the RUN mode is set, the
data is confirmed. (Setting complete)
The zero-sheet level is common for all eight channels. Once the zero-
sheet level is set for one channel after the sensor heads are installed,
there is no need to set it again for the other channels.
However, set the one-sheet level and the two-sheet level on each
channel, once again, when 0-ADJ. key is pressed since this resets
the zero-sheet level as per the prevailing conditions.
The set data is not erased even if turns the power off.
If the setting of the sender and receiver is changed after teaching, de-
tection may become unstable. In this case, perform the teaching once
again.
Teaching by external input
<Time chart>
High
Low
High
Low
High
Low
High
Low
High
Low
RUN / SET
selected input
Answer-back
output
(ANS. OUT)
Answer-back
output
(ANS. OUT)
SET-1 input
50ms or more
50ms or more
50ms or more
50ms or more
Teaching not successful
Teaching successful
RUN
SET
SET-2 input
Teaching successful
1ms or less
CPU processing
time (a few seconds)
1ms or less
CPU processing
time (a few seconds)
Turn the power on.
Check that the power indicator lights up.
Procedure
Operation
Ԙ
ԙ
Open the panel cover.
Preparation
Ԛ
ԛ
Select one of eight channels by pressing the 'channel shift key'.
To modify a previously stored date, choose the particular channel.
Otherwise, choose any channel from 1 to 8.
If the selected channel does not have data stored in it, the self-diag-
nosis indicator lights up.
Select 'PANEL' by pressing 'CH-SELECT key'.
This enables the keys on the panel.
CH
PANEL
EXT.
LOCK
Channel selection
Ԡ
Return to the 'RUN mode' from SET mode by pressing the 'SET-MODE key'.
The self-diagnosis indicator turns off. [If it does not turn off, an error may be in-
herent. Refer to '
EXPLANATION OF FUNCTIONS
', '
٨
Self-diagnosis (Alarm)
function
'.]
The indicated channel number changes from blinking into continuous lighting.
During the RUN mode, the '0-ADJ. key', 'SET-1 key', and 'SET-2 key' are ineffective.
6
*
If the teaching fails, all the sensing indicators blink at the
same time. In this case, repeat the sensitivity setting af-
ter changing the setting of the sender and the receiver.
Blink
Ԝ
ԝ
(Note 1)
(Note 2)
Press the '0-ADJ. key' while no object exists between
the sensor heads.
After the sensing level indicators light up one after the
other for about four cycles, both OUT-1 and OUT-2
blink twice at the same time.
Ԟ
(Note 1)
Place one sheet between the sensor heads, and then
press the 'SET-1 key'.
The sensing level indicators blink one after the other
for about four cycles. After that, OUT-1 blinks twice.
Hold the object steadily between the sensor heads while
the sensing level indicators are lighting up in rotation.
ԟ
(Note 1)
Place two sheets between the sensor heads, and then
press the 'SET-2 key'.
The sensing level indicators light up one after the oth-
er for about four cycles. After that, OUT-2 blinks twice.
Hold the object ssteadily between the sensor heads while
the sensing level indicators are lighting up in rotation.
Enter into the SET mode from RUN mode by pressing the 'SET-
MODE key'. (Note 5)
The self-diagnosis indicator lights up.
The designated channel number blinks.
No sheet
One sheet
Two sheets
RUN
SET
Level setting
Notes: 5)
In case the set indicator blinking, double-feed teaching can-
not be conducted.
The error release method is pressing down SET-1 and SET-
2 together more than 5 seconds or making SET-1 or SET-2
input wire Lo side more than 5 seconds.
Conduct the teaching after the set indicator (red) is changed
to blinking.
RUN
SET
RUN
SET
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