Model Lwa500 Input Module (±10 Vdc Voltage Input, 8 Channels) - Hitachi HSC-2100 Hardware Manual

2 SPECIFICATIONS OF INDIVIDUAL MODULES
2.30 Model LWA500 Input Module (±10 VDC Voltage Input, 8 Channels)
Item
Module input
Input channels (*)
Insulation method
Rated input voltage
Input voltage range
A/D bits
Conversion ratio
Overall accuracy
(room temperature)
Overall accuracy (0 to 55°C)
Response time
Input filter
Input impedance (*)
Internal
12 VDC
consumption
5 VDC
current
Insulation withstand voltage (*)
Connection
Applicable
cable size
External wiring
Tightening
torque
Maximum
wiring length
Mass
(*) The model LWA500 AI module has the following differences in specifications from the model LWA000 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 LWA000.
② The number of scanned channels is fixed at 8, while it can be varied by setting in the model LWA000.
③ The input impedance at power-on time is 1 MΩ, while it is 5 MΩ in the model LWA000.
Channel 0
Channel 1
Channel 6
Channel 7
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.
Voltage input
8
Photocoupler (common to eight channels)
0 to ±10 VDC
±14 V
12 (sign bit + 11 bits)
2,000 in digital value to 10 V
±0.2% full scale (ambient temperature from 20 to 25°C)
±0.5% full scale
10 + TRc ms or less (TRc: remote I/O transfer time)
10 + Rc ms or less (Rc: J.NET transfer time)
6.5 dB at 60 Hz; Time constant, approx. 5 ms (from 3.5 ms to 6.5 ms)
1 MΩ or more (at power-on time);
3 kΩ or more (at power-off time)
250 mA or less
50 mA or less
500 VAC, 1 minute (between external terminal and ground)
40-point terminal block connector (Connector screw type: M3)
2
0.5 to 1.25 mm
0.6 to 0.8 N·m
200 m (shielded twisted-pair cable)
440 g
Process side
+
S0
-
C0
SHD
+
S1
-
C1
SHD
+
S6
-
C6
SHD
+
S7
-
C7
SHD
SHD
Cubicle ground
Specification
Internal
LWA500
circuitry
Amplifier
A/D
2-34
LWA500 AI
A.INPUT
DC±10V
B1
B
A1
A S4
B2
S0
A2
C4
B3
C0
A3
SHD
B4
SHD
A4
B5
A5
S5
B6
S1
A6
C5
B7
C1
A7
SHD
B8
SHD
A8
B9
A9
S6
B10
S2
A10
C6
B11
C2
A11
SHD
B12
SHD
A12
B13
A13
S7
B14
S3
A14
C7
B15
C3
A15
SHD
B16
SHD
A16
B17
A17
SHD
B18
SHD
A18
B19
A19
B20
A20
HITACHI