B7AM-8
j
B7AM-8
j
58
Specifications
Characteristics
General
Normal speed
High speed
Communications method
Unidirectional, time-division multiplex
Transmission distance (see note 1)
500 m max.
100 m max. (see note 2)
I/O delay time
Typical: 19.2 ms; 31 ms max.
Typical: 3 ms; 5 ms max.
Minimum input time (see note 3)
16 ms
2.4 ms
Operating voltage range
12 to 24 VDC (10.8 to 26.4 VDC) (see note 1)
Insulation resistance
100 M
Ω
min. (500 V) between each terminal and external parts
Dielectric strength
1,000 VAC, 50/60 Hz for 1 min between each terminal and external parts
Noise immunity (see note 4)
Noise level: 1.5 kV; pulse width: 100 ns to 1
µ
s (on transmission line due to coupling)
Vibration resistance
10 to 55 Hz, 1.5-mm double amplitude
Shock resistance
300 m/s
2
Ambient temperature
Operating: –10 to 55
°
C (with no icing)
Storage:
–25 to 65
°
C (with no icing)
Ambient humidity
Operating: 35% to 85% (with no condensation)
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
2
minimum must be used for signal transmission. If the
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.