Omron B7A Manual page 60

B7AM-8j
Specifications
Characteristics
General
Communications method
Transmission distance (see note 1)
I/O delay time
Minimum input time (see note 3)
Operating voltage range
Insulation resistance
Dielectric strength
Noise immunity (see note 4)
Vibration resistance
Shock resistance
Ambient temperature
Ambient humidity
Note: 1. 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.
2. 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.
3. The minimum input time is required for the B7AM to read an input signal.
4. As for the high-speed model, these values are possible without grounding the shielded line.
58
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) (see note 1)
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)
High speed
100 m max. (see note 2)
Typical: 3 ms; 5 ms max.
2.4 ms
2
minimum must be used for signal transmission. If the
B7AM-8j