FX2N-8AD Analog input block Specifications 7

7-3
Table 7.4: Voltage/current input specifications

Item Voltage input Current input

Analog input range
-10 to +10 V DC
(input resistance: 200 kΩ)
Adjustment is enabled in following condit ion:
Offset value: -10 to +9 V
Gain value: 10 V or less
"Gain - Offset": > 1 V
(Resolution is constant.)
However, change is disabled while analog
value direct display is used.
Maximum absolute input: ±15 V
-20 to +20 mA DC, +4 to +20 mA DC
(input resistance: 250 Ω)
Adjustment is enabled in following condit ion:
Offset value: -20 to +17 mA
Gain value: 30 mA or less
"Gain - Offset": > 3 mA
(Resolution is constant.)
However, change is disabled while analog
value direct display is used.
Maximum absolute input: ±30 mA
Digital output Signed 16-bit binary Signed 16-bit binary
Resolution • 0.63 mV (20 V × 1/32000)
• 2.5mV (20 V × 1/8000)
• 2.50 µA (40 mA × 1/16,000)
during input of -20 to +20 mA
• 5.00 µA (40 mA × 1/8,000)
during input of -20 to +20 mA
• 2.00 µA (16 mA × 1/8,000)
during input of +4 to +20 mA
• 4.00 µA (16 mA × 1/4,000)
during input of +4 to +20 mA
Total accuracy
Ambient temperature: 25 °C ± 5 °C
±0.3% (±60 mV) against full scale 20 V
Ambient temperature: 0 to +55 °C
±0.5% (±100 mV) against full scale 20 V
Ambient temperature: 25 °C ± 5 °C
±0.3% (±120 µA) against full scale 40 mA
+4 to +20mA input is same (±120 µA)
Ambient temperature: 0 to +55 °C
±0.5% (±200 µA) against full scale 40 mA
+4 to +20mA input is same (±200 µA)