Omron B7A Manual page 14

B7AS
Specifications
Characteristics
General
Communications method
Transmission distance
I/O delay time
Minimum input time (see note 2)
Operating voltage range
Insulation resistance
Dielectric strength
Noise immunity (see note 3)
Vibration resistance
Shock resistance
Ambient temperature
Ambient humidity
Note: 1. 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.
2. The minimum input time is required for the B7A/B7AS to read an input signal.
3. For high-speed models, these values are possible without grounding the shielded line.
Input Models
Item
Compatible inputs
(see note 1)
Input logic
I/O delay time
Current consumption (see note 2)
Operating voltage range
Input voltage range
Input current range
Minimum input time
ON/OFF threshold
Mounting strength
Terminal strength
Tightening torque
Weight
Note: 1. Two-wire sensors must satisfy the following requirements:
Residual voltage:
Current leakage:
The lower limit of control output:
2. Consumption when all 32 points are ON. Excludes external sensor current consumption.
3. Factory-set to normal speed (typical 19.2 ms).
4. The minus sign indicates that the current is flowing out from input terminals.
12
Normal speed
Unidirectional, time-division multiplex
500 m max.
Typical: 19.2 ms; 31 ms max.
16 ms
12 to 24 VDC (10.8 to 26.4 VDC)
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 or condensation)
Storage: –25 to 65 C (with no icing or condensation)
Operating: 35% to 85% (with no condensation)
Switches, two-wire sensors with DC output, three-wire NPN sensors
Active low
Normal speed (typical 19.2 ms); high speed (typical 3 ms) (see note 3)
240 mA max. with all input terminals ON
12 to 24 VDC
0 VDC to supply voltage
–6 to –3 mA/point (see note 4)
Normal speed: 16 ms; high speed: 2.4 ms
No-contact input:
ON discrimination voltage:
OFF discrimination voltage:
Contact input:
ON discrimination resistance: 660 Ω max.
OFF discrimination resistance: 2 kΩ min.
No damage when 49-N pull is applied for 1 min each in all directions (except in direction of DIN
track)
No damage when 49-N pull is applied each in all directions
0.78 to 1.18 N m
Approx. 230 g
4 V max.
1.5 mA max.
3 mA (Use a bleeder resister to eliminate this restriction.)
100 m max. (see note 1)
Typical: 3 ms; 5 ms max.
2.4 ms
2
minimum must be used for signal transmission. If the
B7AS-T3BS
4 V max.
6 V min.
B7AS
High speed