FEC920: USER GUIDE
Appendix A
Page 210
A5e38775501-AA
September 18
Standard
USB1.1
Transmission speeds
1.5Mbits/sec (low speed device)
Maximum current
<100mA
Peripherals supported
Memory stick (8GB max), Bar code reader, QWERTY keyboard
Update/Archive rates
Sample rate (input/output)
8Hz (4Hz for digital inputs) (4Hz for dual input channels)
Trend update
8Hz max.
Archive sample value
Latest value at archive time
Display value
Latest value at display update time.
A3 ANALOG INPUT SPECIFICATION
General
Number of analog inputs
Four
Input types
Standard:
dc Volts, dc mV, dc mA (external shunt required), thermocouple, RTD (2-wire and 3-wire), digital (contact closure).
Optional:
dual mA, dual mV, dual thermocouple.
Input type mix
Freely configurable
Sample rate
8Hz (125ms)
Conversion method
16 bit delta sigma.
Input ranges
See below.
Mains rejection (48 to 62Hz)
Series mode:
>95dB
Common mode:
>179dB
Common mode voltage
250Vac max.
Series mode voltage
280mV at lowest range; 5V peak-to-peak, at highest range.
Input impedance
See relevant Range specification, below.
Overvoltage protection
Continuous:
± 30V RMS
Transient (<1ms):
±200V pk-pk between terminals.
Sensor break detection
Type
ac sensor break on each input giving quick response with no associated dc errors.
Recognition time:
<3 secs.
Minimum break resistance:
40mV, 80mV ranges: 5k
ȍ
; other ranges: 12.5k
ȍ
Shunt (mA inputs only)
Values
1
ȍ
to 1k
ȍ
, mounted externally.
additional error due to shunt:
0.1% input
Isolation
Channel to channel:
300V RMS or dc (single insulation)
Channel to common electronics:
300V RMS or dc (single insulation)
Channel to ground:
300V RMS or dc (single insulation)
Dielectric strength
Test:
BS EN61010, 1 minute type test
Channel to channel:
2500Vac
Channel to ground:
1500Vac
DC input ranges
Ranges
40mv, 80mV, 2V; 10V (-4.0 to +10V)
40mV Range
Range:
-40mV to + 40mV
Resolution
1.9
ȝ
V (unfiltered)
Measurement noise:
1.0
ȝ
V peak-to-peak with 1.6s input filter
Linearity error:
0.003% (best fit straight line)
Calibration error:
±4.6
ȝ
V ±0.053% of measurement at 25°C ambient
Temperature coefficient:
±0.2
ȝ
V/°C ±13ppm/°C of measurement from 25°C ambient
Input leakage current:
±14nA
Input resistance:
100M
ȍ
80mV Range
Range:
-80mV to + 80mV
Resolution
3.2
ȝ
V (unfiltered)
Measurement noise:
3.3
ȝ
V peak-to-peak with 1.6s input filter
Linearity error:
0.003% (best fit straight line)
Calibration error:
±7.5
ȝ
V ±0.052% of measurement at 25°C ambient
Temperature coefficient:
±0.2
ȝ
V/°C ± 13ppm/°C of measurement from 25°C ambient
Input leakage current:
±14nA
Input resistance:
100M
ȍ
2V Range
Range:
±2V
Resolution
82
ȝ
V
Measurement noise:
90
ȝ
V peak-to-peak with 1.6s input filter
Linearity error:
0.003% (best fit straight line)
Calibration error:
±420
ȝ
V ±0.044% of measurement at 25°C ambient
Temperature coefficient:
±125
ȝ
V/°C ±13ppm/°C of measurement from 25°C ambient
Input leakage current:
±14nA
Input resistance:
100M
ȍ
A5E45696052A Rev-AA