B7AH-R6D58 datasheet(19/121 Pages) OMRON

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B7A/B7AS

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

µs (on transmission line due to coupling)

Vibration resistance

10 to 55 Hz, 1.5-mm double amplitude

Shock resistance

300 m/s2

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. Refer to

Power Supply on page 21 for details.

2. A shielded transmission cable or a VCTF cable with a thickness of 0.75 mm2 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 B7A/B7AS to read an input signal.

4. For high-speed models, these values are possible without grounding the shielded line.

Input Models

Item

Screw terminal models

B7A-T6A1/-T6A6

B7A-T6B1/-T6B6

B7AS-T6B1/-T6B6

Compatible inputs

(see note 1)

Switches, two-wire sensors with DC output, three-wire NPN sensors

Input logic

Active low

I/O delay time

B7A

j-T6j1: normal speed (typical 19.2 ms); B7Aj-T6j6: high speed (typical 3 ms)

Current consumption

(see note 2)

120 mA max. with all input terminals ON

Operating voltage range

12 to 24 VDC

Input voltage range

0 VDC to supply voltage

Input current range

–6 to –3 mA/point (current flowing from input terminals)

Minimum input time

B7A

j-T6j1: 16 ms; B7Aj-T6j6: 2.4 ms

ON/OFF threshold

No-contact input:

ON voltage:

4 V max.

OFF voltage: 6 V min.

Contact input:

ON discrimination resistance:

660

Ω max.

OFF discrimination resistance: 2 k

Ω min.

Mounting strength

No damage when 49-N pull is applied for 1 min each in all directions (except in direction of DIN track)

Terminal strength

No damage when 49-N pull is applied each in all directions

Tightening torque

0.78 to 1.18 N

S m

Weight

Approx. 160 g

Approx. 130 g

Note:

1. All B terminals of the B7A-T6A

j are negative terminals; power must be supplied to the three-wire sensor via the positive power

supply terminal or from an independent power supply.

Two-wire sensors must satisfy the following requirements:

Residual voltage:

4 V max.

Current leakage:

1.5 mA max.

The lower limit of control output:

3 mA (Use a breeder resister to eliminate this restriction.)

2. Consumption when all 16 points are ON. Excludes external sensor current for Input Terminals.

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