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217
B7AC Interface Units
Section 5-5
5-5-2
Example System Configuration
Compatible B7AC Link
Terminal Units
The following B7AC Link Terminal Units (Sensor I/O Connector type) can be
connected to the B7AC Interface Unit.
5-5-3
B7AC Interface Unit: DRT1-B7AC
Specifications
General Specifications
DCA1-5CN
@@
W1 Cable with
shielded connectors on both ends
DCN2-1 Shielded
T-branch connector
T-branch Tap
Communications media
XS2W-D42
@
-
@
81-
@
Cables
with shielded connector plugs
DeviceNet Master Unit
DeviceNet communications cable
Internal power supply
DRT1-B7AC
B7AC Interface Unit
B7AC-series
I/O Connector-type
Link Terminal Units
(10 points/Unit)
Sensors with
attached
connectors
10 sensors
10 sensors
10 sensors
10 inputs
10 inputs
10 inputs
Model
Number of
inputs
Input format
Transmission delay with the
B7AC Interface Unit
B7AC-T10A1
10 inputs
NPN
19.2 ms
B7AC-T10A1-A
10 inputs
NPN
19.2 ms or 3 ms (switchable)
B7AC-T10A1-B
10 inputs
PNP
19.2 ms or 3 ms (switchable)
Item
Specification
Model
DRT1-B7AC
Number of I/O points 30 B7AC inputs max. (up to 3 B7AC Link Terminal Units can
be connected with 10 inputs/Unit)
Uses two input words in Master.
Internal current con-
sumption
24-V DC communications power supply: 70 mA max.
24-V DC internal power supply: 500 mA max.
(This is the current when 3 B7AC Link Terminal Units are con-
nected and all inputs are OFF. It does not include the current
consumed by connected external devices.)
Dielectric strength
500 V AC for 1 min. (between insulated circuits, detected leak-
age current 1 mA)
Noise immunity
Internal power supply normal:
±
600 V, 10 min., with pulse widths of 100 ns to 1
μ
s
Internal power supply common:
±
1.5 kV, 10 min., with pulse widths of 100 ns to 1
μ
s
Vibration resistance
Malfunction:
10 to 150 kHz, single amplitude 0.5 mm, or 70 m/s
2
Destruction:
10 to 150 kHz, single amplitude 0.75 mm, or 100 m/s
2
Shock resistance
Malfunction: 200 m/s
2
Destruction: 300 m/s
2
Ambient operating
temperature
−
10 to 55
°
C
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