Digital Panel Meters
DC/AC Current and Voltage Indicator/Controller
Type LDM40
•
Multi-input instrument 4-DGT LED
• 0.1% RDG basic accuracy
• TRMS AC current and voltage measurements
• AC/DC current measurements: selectable full scales
(200µA to 5A)
• AC/DC voltage measurements: selectable full scales
(200mV to 500V)
• Up to 2 independent alarm set-points (optional)
• 20mA/10V DC analogue output (optional)
• RS485 serial communication port (optional)
• Modbus, Jbus communication port
• Universal power supply:
18-60VAC/DC and 90-260VAC/DC
• Front protection degree: IP65
Product Description
How to order
LDM40 LSE H 0 XX XX X
Model
µP-based digital panel meter,
4-DGT LED indicator and
controller, for current, voltage
and two-level protection
password. One analogue
output and serial communi-
cation port RS485 available
Measuring inputs
Power supply
Alarms
measurements.
Measuring
Retransmission
Communication
Options
ranges and functions easily
programmable from the front
key-pad. LDM40 includes
storage min-max functions
on request. Housing
for
panel mounting with front
protection degree: IP65.
Type Selection
Measuring inputs
Power supply
Alarms
Retransmission
LSE: signal inputs + AUX:
0.2-2-20mA DC/AC;
0.2-2-20V DC/AC
HSX: signal inputs:
0.2-2-5A DC/AC;
H:
L:
90 to 260V AC/DC
18 to 60V AC/DC
0:
1:
None
XX:
AV:
None
single relay output,
(AC1-5AAC, 250VAC)
Dual relay output,
(AC1-5AAC, 250VAC)
Single analogue output,
0 to 20mA DC and
0 to 10V DC
2:
20-200-500V DC/AC
Communication
Options
XX:
SX:
None
Serial port RS485
X:
T:
None
Tropicalization
Input Specifications
Analogue inputs
LSE type
HSX type
Channels and variables
1, mA and V DC/AC + AUX
1, A and V DC/AC
See table “Measurement
accuracy, temperature drifts,
minimum and maximum
indications”
height 14.2 mm
Colour: red
Max and min indication
Measurements
See table “Measurement
accuracy, temperature drifts
min and max indications”
Accuracy
Current, voltage.
For the current and voltage
measurements:
TRMS measurement of dis-
torted sine waves.
Direct
Additional errors
Humidity
Input frequency
Magnetic field
0.3% RDG, 60% to 90% R.H.
0.4% RDG, 62 to 440 Hz
0.5% RDG @ 400 A/m
Coupling type
Crest factor
≤3; APmax=1.7In; VPmax=1.7Un
Temperature drift
See table “Measurement
accuracy, temperature drifts,
min and max indications”
Input impedance
See table “input
impedances and overloads”
Sampling rate
Display refresh time
Display
500 samples/s @ 50Hz
200 msec @ 50Hz
Frequency
Overload
40 to 440 Hz
See table “input
impedances and overloads”
4 DGT,
7 segments
Specifications are subject to change without notice LDM40DS 250707
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