Rice Lake 820i Programmable Indicator/Controller - Installation Manual - Manual (Page 107)

Appendix 103
10.13 Specifications
Power
Line Voltages 115 or 230 VAC
Frequency 50 or 60 Hz
Power Consumption 25 watts maximum
A/D Specifications
Excitation Voltage 10 ± 0.5 VDC,
16 x 350
 or 32 x 700 load cells per A/D card
Sense Amplifier Differential amplifier with
4- and 6-wire sensing
Analog Signal Input Range –6 mV to +40 mV
Analog Signal Sensitivity
0.3
V/grad minimum @ 7.5 Hz
1.0
V/grad typical @ 120 Hz
4.0
V/grad typical @ 960 Hz
A/D Sample Rate 7.5–960 Hz, software selectable
Input Impedance >35 M
 typical
Internal Resolution 8 000 000 counts
Wt Display Resolution 9,999,999
Input Sensitivity
10 nV per internal count
System Linearity ±0.01% of full scale
Zero Stability ±150 nV/°C, maximum
Span Stability ± 3.5 ppm/°C, maximum
Input Voltage Differential ±800 mV referenced to earth ground
Input Overload
Load cell signal lines ±10 V continuous, ESD protected
RFI/EMI Protection Communications, signal, excitation, and sense lines protected
Digital Specifications
Microcomputer Motorola ColdFire ® MCF5307 main processor @ 90 MHz
Digital I/O 8 I/O channels on CPU board; optional 24-channel I/O expansion card available
Digital Filter Software selectable: 1–256, enhanced Rattletrap
®
hybrid digital filtering
Serial Communications
Serial Ports Ports on CPU board support up to 115200 bps; optional dual-channel serial expansion card available
Port 2 Full duplex RS-232 with CTS/RTS
Port 4 Full duplex RS-232; 2-wire RS-485, 20mA