Chapter 3 Analog Input Module AS04/08AD-A 3.2 Specifications and Functions 3.2.1 Specifications Electrical specifications 3_ Functional specifications 3-3 Module Name AS04AD-A AS08AD-B AS08AD-C Number of Inputs 4 8 8 Analog-to-Digital Voltage input/Current input Voltage input Current input Conversion Supply Voltage 24 VDC (20.4 VDC–28.8 VDC) (-15% to +20%) Connector Type Removable terminal block Conversion Time 2ms/channel An analog circuit is isolated from a digital circuit by a digital integrated circuit/ optocoupler, but the analog channels are not isolated from one another. Isolation between a digital circuit and a ground: 500 VDC Isolation between an analog circuit and a ground:
500 VDC Isolation between an analog circuit and a digital circuit: 500 VDC Isolation between the 24 VDC and a ground: 500 VDC Isolation Weight 145g Analog-to-Digital Voltage Input Conversion Rated Input Range -10 V ~ +10 V 0 V ~ 10 V ±5 V 0 V ~ 5 V 1 V ~ 5 V Rated Conversion K-32000 ~ K32000 K0 ~ K32000 K-32000 ~ K32000 K0 ~ K32000 K0 ~ K32000 Range -10.12V ~ 10.12V -0.12V ~ 10.12V -5.06V ~ 5.06V -0.06V ~ 5.06V 0.95V ~ 5.05V Hardware Input Limit*1 K-32384 ~ K32384 K-384 ~ K32384 K-32384 ~ K32384 K-384 ~ K32384 K-384 ~ K32384 Conversion Limit*2 Error Rate Room Temperature: ±0.2% ; Full Temperature Range: ±0.5% Hardware Resolution 16 bits Input Impedance 2MΩ Absolute Input ±15 V Range*3