Mantracourt Electronics Limited
LC1 User Manual
7
Chapter 4 Specifications of the LCI
Faults Monitored
Load Cell out of pre-set balance range
Load Cell out of pre-set operating range
Low/high excitation
Open circuit of any load cell connection
Short circuit between any load cell connections
Internal load cell fault (bridge imbalance)
Powering
Indication
Setting Method
By Load Cell Excitation from Host
4 digit 7-segment LED display for set up, load cell error type, individual
mV and average mV.
6 buttons for reading & set up
Connections
2 part terminals, up to 2.5mm² cable
4 x 5 way for load cell connection
1 x 5 way for LCI output and power input
1 x 3 way alarm relay contacts
Dimensions
Environmental
Enclosure Material
200 x 120 x 75mm. (PCB dimensions 170 x 100mm excluding mounting
material)
Sealed to IP65 with cable glands & blanking plugs fitted
CE Compliance.
Grey ABS
Parameters
Min
Typical
Max
Units
Power supply voltage (from Host excitation supply)
4
5/10
12
Vdc Note 1
Power supply current (from Host excitation supply)
-
70
80
mA Note 2
Load cell excitation 350R load cell
4
5/10
12
V
Load cell resistance (typically 350-700R)
300
350
1000
Ohm
Load cell sensitivity
1.0
2.0
5.0
mV/V
Number of load cells selectable
1
-
4
Output load (Host input impedance)
1M
-
-
Ohm
Bandwidth (*display only)
-
100
-
Hz
Zero temp. coefficient (*display only) @ 2mV/V @4V
excitation
-
0.008
0.02
%FR/
C
Span temperature coefficient (*display only)
-
0.001
0.0025
%/
C
Linearity (*display only)
-
-
0.03
%FR
90 day Stability (*display only)
-
-
0.01
%
90 day Stability (*display only)
-
-
0.01
%FR
Operating temperature range
-10
-
85
C
Storage temperature range
-40
-
95
C
Humidity
-
95
-
%
Scan Speed for alarm output (4 cells)
-
40
100
ms
Display range
-50
-
+50
mV
Relay contacts SPCO current (normally energized)
-
-
1
A
Relay contacts SPCO DC voltage (normally energized)
-
-
24
VDC
Relay contacts SPCO AC voltage (normally energized)
-
-
120
VAC
Alarm operating speed for less than 1mV change
-
100
-
ms
mV measurement accuracy individual cell (*display
only)
-
-
±0.1
mV
