14 specifications – Rice Lake 920i USB Installation Manual V5.05 User Manual
Page 137
Appendix
131
11.14
Specifications
Power
Line Voltages
115 or 230 VAC
Frequency
50 or 60 Hz
Power Consumption
(universal model, 32 x 350
load cells)
115 VAC
400 mA (46 W)
230 VAC
250 mA (58 W)
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 –10 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
6 I/O channels on CPU board; optional
24-channel I/O expansion cards available
Digital Filter
Software selectable: 1–256, enhanced
Rattletrap
®
hybrid digital filtering
Serial Communications
Serial Ports
4 ports on CPU board support up to 115200
bps; optional dual-channel serial expansion
cards available
Port 1
Full duplex RS-232
Port 2
RS-232 with CTS/RTS; PS/2 keyboard interface
via DB-9 connector
OR
USB Type-A and Type-B connectors
Port 3
Full duplex RS-232, 20 mA output
Port 4
Full duplex RS-232, 2-wire RS-485, 20 mA
output, RS-422
Operator Interface
Display
320x240 pixel VGA LCD display module with
adjustable contrast, 75Hz scan rate
26000 cd/m
2
brightness
Keyboard
27-key membrane panel, PS/2 port for external
keyboard connection (if using serial interface
option) or USB type-A connector (if using USB
interface option)
Environmental
Operating Temperature
Legal
–10 to +40°C (14 to 104°F)
Industrial
–10 to +40°C (14 to 104°F)
Storage Temperature
–10 to +70°C (14 to 158°F)
Humidity
0–95% relative humidity
Enclosure
Enclosure Dimensions
Universal enclosure
10.56 in x 8.51 in x 4.61 in
(without tilt stand)
268 mm x 216 mm x 117 mm
Deep enclosure
10.76 in x 8.51 x 5.25 in
(without tilt stand)
273 mm x 216 mm x 133 mm
Panel mount enclosure
11.5 in x 9.1 in x 5 in
292 mm x 231 mm x 127 mm
Wall mount enclosure
14 in x 18 in x 6.75 in
356 mm x 457 mm x 171 mm
Weight
Universal enclosure
9.5 lb (4.3 Kg)
Deep enclosure
10.75 lb (4.9 Kg)
Panel mount enclosure
8.5 lb (3.9 Kg)
Wall mount enclosure
23 lb (10.4 Kg)
Rating/Material
NEMA 4X/IP66, stainless steel
Certifications and Approvals
t
N
A
T
IO
NA
L CONFE
R
E
N
C
E
t
O
N
W
E
I G
H
T S
A N D M
E
A
S
U
R
E
S
NTEP
CoC Number01-088
Accuracy Class
III/IIIL n
max
: 10 000
Measurement Canada
Approval
AM-5426
Accuracy Class III
n
max
: 10 000
UL
UL
C
US
LISTED
®
Universal model
File Number:E151461
Panel mount model
File Number:E151461, Vol 2
UL
C
US
LISTED
®
Wall mount model
UL 508A control panel approved
File Number:E207758
OIML
GB-1140
n
max
: 6 000
GB-1135
n
max
: 10 000