Kingfisher Plus+ Hardware Manual
9.1.3 AI-1 Specifications
AI-1 Analogue Input Module Specifications
Input Current Ranges
4-20 mA and 0-20 mA
Input Voltage Ranges
1-5 V and 0-5 V *
Inputs per Module
8
Update Rate
2 ms (all eight channels)
Accuracy
± 0.25% @ 25 °C
± 0.50% @ -20 to +70 °C
Resolution
12 bit (no sign bit)
Common Mode Voltage
1500 V
Linearity
< 1 Least Significant Bit
Isolation
1.5 kV between field and logic
Common Mode Rejection
> 70 dB at DC; >70 dB at 60 Hz
Cross-Channel Rejection
> 80 dB from DC to 1 kHz
Input Impedance
250 Ω standard
11 kΩ optional *. The internal load resistors can be factory
removed if high impedance voltage inputs are required.
Input Filter
Cutoff Frequenc y
2 kHz @ -3 dB
Output Power
24 V
DC
/ 160 mA, Isolated
Operating Temperature
-20 to +70 °C
Storage Temperature
-40 to +85 °C
Operating Humidity
5 to 95 % RH (non-condensing)
Hot Swap
Yes. Module can be swapped while RTU is running. Hot swap will
not cause a Warm Start. Inputs are cleared in RTU memory while
module is removed.
* Analogue inputs can be modified from current inputs to voltage inputs by lifting one pin (or
by the complete removal) of the 250
Ω
channel resistor. Each channel has its own resistor,
so any combination of channels can be converted. It is recommended that modules be
returned to Semaphore for factory conversion if required. No responsibility will be taken by
Semaphore for damage caused to boards during modification performed by clients. The
circuit board resistors to change are: R9 to R16 (channels 1 to 8 correspondingly).
Hardware Manual Version 7.16
http://www.servelec-semaphore.com/
Page 134
