Omron B7A Manual page 35

B7A
Specifications
Characteristics
General
Communications method
Transmission distance (see note 2)
I/O delay time
Minimum input time (see note 4)
Operating voltage range
Insulation resistance
Dielectric strength
Noise immunity (see note 6)
Vibration resistance
Shock resistance
Ambient temperature
Ambient humidity
Note: 1. If there is a possibility of noise interference from the power supply, input, and/or output lines, add appropriate noise protection cir-
cuits. Refer to Noise Protection Circuits on page 101 for details.
2. The transmission distance values stated in this table are possible if the Input or Output Link Terminal is connected to an independent
power supply. If a single power supply is connected to the Input or Output Link Terminal, the supply voltage must be 24 VDC 10%,
in which case the transmission distance of a normal-speed model is 100 m maximum and that of a high-speed model is 50 m maxi-
mum. Refer to Power Supply on page 36 for details.
3. A shielded transmission cable or a VCTF cable with a thickness of 0.75 mm
VCTF cable is used, however, the transmission distance will be 10 m maximum regardless of whether or not independent power
supplies for the Input and the Output Link Terminals are used.
4. The minimum input time is required for the B7A to read an input signal.
5. Set the timer of the PLC to 0.02 s minimum if a normal-speed model is connected to the PLC.
6. For high-speed models, these values are possible without grounding the shielded line.
Input Models
Item
Compatible inputs
Input logic
Current consumption
(see note)
Input voltage range
Input current range
ON/OFF threshold
Mounting strength
Terminal strength
Tightening torque
Weight
Note: Consumption when all 16/32 points are ON. Excludes external sensor current for Input Terminals.
Normal speed
Unidirectional, time-division multiplex
500 m max.
Typical: 19.2 ms; 31 ms max.
16 ms (see note 5)
12 to 24 VDC (10.8 to 26.4 VDC) (see note 2)
100 MΩ min. (500 V) between each terminal and external parts
1,000 VAC, 50/60 Hz for 1 min between each terminal and external parts
Noise level: 1.5 kV; pulse width: 100 ns to 1 µs (on transmission line due to coupling)
10 to 55 Hz, 1.5-mm double amplitude
2
300 m/s
Operating: –10 to 55 C (with no icing)
Storage: –25 to 65 C (with no icing)
Operating: 35% to 85% (with no condensation)
16-point
B7A-T6E3/-T6E8
PLC (NPN output), switches, three-wire NPN sensors
Active low
60 mA max. with all input terminals ON
0 VDC to supply voltage
–1.5 to –0.6 mA/point (current flowing from input terminals)
No-contact input: ON voltage: 1.6 V max.
OFF voltage: 5.5 V min.
Contact input: ON discrimination resistance:
OFF discrimination resistance:
No damage when 49-N pull is applied for 1 min each in all directions
No damage when 49-N pull is applied for 1 min each in all directions
0.78 to 1.18 N m
Approx. 46 g
High speed
100 m max. (see note 3)
Typical: 3 ms; 5 ms max.
2.4 ms
2
minimum must be used for signal transmission. If the
32-point
B7A-T3E3/-T3E8
100 mA max. with all input terminals ON
1 kΩ max.
9 kΩ min.
Approx. 71 g
B7A
33