Omron B7A - Page 104

B7A
B7A
102
Transmission Errors and Output Signals
Transmission errors occur in the following cases:
• When the signal or 0-V wire is disconnected.
• When the signal is influenced by high-level external noise or the
signal is excessively deformed because the length of the
transmission
path is more than the permissible distance.
• When the supply voltage to the Link T erminals are not within the
operating voltage range (12 to 24 V ±10%).
• Immediately after the Link T erminals are turned on.
(An error is reset within 300 ms after the power is turned on.)
Output Signals
HOLD: When an error occurs, the output signals just before the oc -
currence
of the error will be maintained.
LOAD OFF: When an error occurs, all output signals will be turned
OFF.
Automatic
Reset
When the error is corrected, the Link T erminals will automatically re -
set
themselves.
I/O Status
Signal Configuration
Input Models
Type Applicable
model
ON/OFF Circuit Suitable input
example
Screw
terminals
B7A-T6A1
B7A-T6A6
B7AM-6BS
B7AM-8B11
B7AM-8B31
B7AM-8B16
B7AM-8B36
B7A-T10S1
For switches
ON: Switch is closed.
OFF:
Switch is open.
SW
IN
_
A3G Pushbutton
Switch (microload)
WL01j
Limit Switch
B7A-T10S3 For photoelectric sensors and proximity sensors (NPN)
ON:
Sensor signal is ON (residual voltage is 1.6 V max.).
OFF: Sensor signal is OFF .
+V
OUT
0 V
IN
+
_
Sensor
E2E-XjE
Proximity
Sensor
E3S Photoelectric
sensor
B7A-T6B1
B7AS-T6B1
B7A-T6B6
B7AS-T6B6
B7AM-6BS
B7AM-8B11
B7AM-8B31
B7AM-8B16
B7AM-8B36
For photoelectric sensors and proximity sensors (NPN)
ON: Sensor signal is ON (residual voltage is 4 V max.).
OFF: Sensor signal is OFF .
+V
OUT
0 V
IN
+
_
Sensor
B7A-T6A1
B7A-T6A6
B7A/S-T6B1
B7A/S-T6B6
B7AM-6BS
B7AM-8B11
B7AM-8B31
B7AM-8B16
B7AM-8B36
For proximity sensors (two-wire sensor with DC output)
ON:
Sensor signal is ON (residual voltage is 4 V max.).
OFF: Sensor signal is OFF (leakage current is 1.5 mA
max.).
+V
0 V
–
IN
Sensor
E2E-XD-N 2-wire
DC Inductive
Proximity Sensor
B7A-T6C1
B7A-T6C6
B7AM-8F31
For switches
ON: Switch is closed.
OFF: Switch is open.
SW
+
IN
A3G Pushbutton
Switch (microload)
WL01j Limit
Switch
For proximity sensors (two-wire sensor with DC output)
ON: Sensor signal is ON (residual voltage is 4 V max.).
OFF: Sensor signal is OFF (leakage current is 1.5 mA
max.).
+V
0 V
IN
+
Sensor
E2E-XD-N 2-wire
DC Inductive
Proximity Sensor
For photoelectric sensors and proximity sensors (PNP)
ON: Sensor signal is ON (residual voltage is 4 V max.).
OFF: Sensor signal is OFF .
+V
OUT
0 V
IN
+
_
Sensor
E2E-XjF
Proximity Sensor
E3S Photoelectric
sensor (B-type)