Chapter 2    Specifications 
2 – 57 
 
(9) EH-AY4V 
 
Specification 
EH-AY4V 
Voltage range 
0 to 10V DC 
Number of channels  4 
Resolution 
12 bits 
Conversion time 
5ms maximum 
Overall accuracy 
±1% maximum of full-scale 
External load resistance 
10kΩ minimum 
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. 500mA 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] V0 + 
[2] V1 + 
[3] V2 + 
[4] V3 + 
[5] N.C. 
[6] N.C. 
[7] N.C. 
[8] N.C. 
[9]  24 VDC +
[10] V0 - 
[11] V1 - 
[12] V2 - 
[13] V3 - 
[14] N.C. 
[15] N.C. 
[16] N.C. 
[17] N.C. 
[1] 
[2] 
[3] 
[4] 
[5] 
[6] 
[7] 
[8] 
[9] 
[10] 
[11] 
[12] 
[13] 
[14] 
[15] 
[16] 
[17] 
[18] 
Screw fo
 
fixing 
 
 
[18]  24 VDC -
 
Internal circuit 
24VDC+ 
24VDC
-
 
V0 + 
V0 
-
 
V1 + 
V1 
-
 
V2 + 
V2 
-
 
V3 + 
V3 
-
 
 
Relation between analog and digital data 
 
H0FFFH07FFH0000
0
Output voltage (V) 
5
10