2 SPECIFICATIONS OF INDIVIDUAL MODULES
2-35
2.31 Model LWA501 Input Module (±5 VDC Voltage Input, 8 Channels)
Item Specification
Module input Voltage input
Input channels (*) 8
Insulation method Photocoupler (common to eight channels)
Rated input voltage 0
to
±5 VDC
Input voltage range ±14
V
A/D bits
12 (sign bit + 11 bits)
Conversion ratio
2,000 in digital value to 5 V
Overall accuracy
(room temperature)
±0.2% full scale (ambient temperature from 20 to 25°C)
Overall accuracy (0 to 55°C)
±0.5% full scale
Response time
10 + TRc ms or less (TRc: remote I/O transfer time)
10 + Rc ms or less (Rc: J.NET transfer time)
Input filter
6.5 dB at 60 Hz; Time constant, approx. 5 ms (from 3.5 ms to 6.5 ms)
Input impedance (*)
1 M
Ω
or more (at power-on time);
3 k
Ω
or more (at power-off time)
Internal
consumption
current
12 VDC
250 mA or less
5 VDC
50 mA or less
Insulation withstand voltage (*)
500 VAC, 1 minute (between external terminal and ground)
External wiring
Connection 40-point terminal block connector (Connector screw type: M3)
Applicable
cable size
0.5 to 1.25 mm
2
Tightening
torque
0.6 to 0.8 N·m
Maximum
wiring length
200 m (shielded twisted-pair cable)
Mass 440
g
(*) The model LWA501 AI module has the following differences in specifications from the model LWA001 AI
module available for use with HSC-2000 I/O units:
①
Insulation withstand voltage is 500 VAC, compared with the 1,500 VAC of the model LWA001.
②
The number of scanned channels is fixed at 8, while it can be varied by setting in the model LWA001.
③
The input impedance at power-on time is 1 M
Ω
, while it is 5 M
Ω
in the model LWA001.
The overall accuracy listed above is expressed as percentages of the full scale
value of this AI module.
The response time listed above does not include the delay time of the input filter.
The cable connected to each channel is one that is shielded either separately from
or together with the cables connected to the other channels.
Input signals to channels 0 thru 7 must be grounded at the same potential level.
Process side
Amplifier
A/D
LWA501
Internal
circuitry
Cubicle ground
+
-
+
-
+
-
+
-
C0
S1
C1
S6
C6
C7
S0
S7
SHD
SHD
SHD
SHD
SHD
Channel 0
Channel 1
Channel 6
Channel 7
C6
LWA501
AI
A.INPUT
DC
±
5V
HITACHI
B
S0
C0
SHD
S1
C1
S2
C2
S3
C3
S4
C4
S5
C5
S6
S7
C7
A
SHD
SHD
SHD
SHD
SHD
SHD
SHD
SHD
SHD
A1
A2
A3
A4
A5
A6
A7
A8
A9
A20
A19
A18
A17
A16
A15
A14
A13
A12
A11
A10
B1
B2
B3
B4
B5
B6
B7
B8
B9
B20
B19
B18
B17
B16
B15
B14
B13
B12
B11
B10
Содержание HSC-2100
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Страница 102: ...5 MAKING USE OF MODULES ...
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