Hitachi EHV+ Series - Page 63

Chapter 2 Specifications
2 – 53
(5) EH-AX8IO
Specification
EH-AX8IO
Current range
0 to 22mA
Number of channels 8
Resolution
12 bits
Conversion time
5ms maximum
Overall accuracy
±1% maximum of full-scale
Input impedance
Approx. 100Ω
Channel and Internal circuit Photo-coupler insulation
Insulation system
Between channels No insulation
External connection
Removable type screw terminal block (M3)
External power supply
24V DC (+20%, -15%) Approx. 150mA (Approx. 400mA at power ON)
External wiring
2-core shield cable (20m (65.62ft.) maximum)
Internal current consumption
100mA maximum
Terminal configuration No. Signal
name
Diagram of Internal circuit
[1] I0 +
[2] I1 +
[3] I2 +
[4] I3 +
[5] I4 +
[6] I5 +
[7] I6 +
[8] I7 +
[9] 24 VDC +
[10] I0 -
[11] I1 -
[12] I2 -
[13] I3 -
[14] I4 -
[15] I5 -
[16] I6 -
[17] I7 -
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]
[12]
[13]
[14]
[15]
[16]
[17]
[18]
Screw fo
r
fixing
[18] 24 VDC -
Internal circuit
24VDC+
24VDC
-
I0 +
I0
-
I7 +
I7
-
Relation between analog and digital data
H0FFF
H07FF
H0000
0
Input current
mA
11 22