Digital Panel Meters
DC/AC Current and Voltage Indicator/Controller
Type LDM35H
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Multi-input instrument 3 1/2 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)
Universal power supply: 18-60VAC/DC and
90-260VAC/DC
Front protection degree: IP65
Product Description
digital
panel
µP-based
meter, 3 1/2 dgt LED indica-
tor and controller, for cur-
rent, voltage measurements.
Measuring ranges and func-
tions easily programmable
from the key-pad. LDM
35H
includes storage min-max
functions and double level
protection password.
Housing for panel mounting
with front protection degree:
IP65.
How to order
Model
Measuring inputs
Power supply
Alarms
Retransmission
Options
LDM35H LSE H 0 XX XX
Type Selection
Measuring inputs
LSE:
HSX:
signal inputs + AUX:
0.2-2-20mA DC/AC;
0.2-2-20V DC/AC
signal inputs:
0.2-2-5A DC/AC;
20-200-500V DC/AC
Power supply
H:
L:
90 to 260V AC/DC
18 to 60V AC/DC
Alarms
0:
1:
2:
None
single relay output,
(AC1-5AAC, 250VAC)
Dual relay output,
(AC1-5AAC, 250VAC)
Retransmission
XX:
None
Options
XX:
TX:
None
Tropicalization
Input Specifications
Analogue inputs
LSE type
HSX type
Accuracy
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”
0.3% RDG, 60% to 90% R.H.
0.4% RDG, 62 to 440 Hz
0.5% RDG @ 400 A/m
Temperature drift
See table “Measurement
accuracy, temperature drifts,
min and max indications”
500 samples/s @ 50Hz
200 msec @ 50Hz
3 1/2 DGT,
7 segments
height 14.2 mm
Colour: red
See table “Measurement
accuracy, temperature drifts
min and max indications”
Sampling rate
Display refresh time
Display
Additional errors
Humidity
Input frequency
Magnetic field
Max and min indication
Specifications are subject to change without notice
LDM35HDS 0405
1
LDM35H
Input specifications (cont.)
Measurements
Current, voltage. For the
current and voltage mea-
surements: TRMS measure-
ment of distorted sine
waves.
Direct
≤3;
A
Pmax
=1.7In; V
Pmax
=1.7Un
Input impedance
Frequency
Overload
See table “input
impedances and overloads”
40 to 440 Hz
See table “input
impedances and overloads”
Coupling type
Crest factor
Measurement accuracy, temperature drifts, min and max indications
All accuracies and min/max indications are referred to an ambient temperature range of 25°C ±5°C, relevant humidity
≤60%
and scale ratio
(electrical/displayed scale) equal to 1.
Module
Inputs
Type
Accuracy
Temp. drift
Min. indicat. ( )
Max. indicat. ( )
LSE
DC: ±(0.1%RDG+3DGT)
0% to 25% FS;
-200µA to +200µA
±(0.1%RDG+2DGT)
-2mA to +2mA
25% to 110% FS.
-20mA to +20mA
DC/AC TRMS (45 to 65Hz)*:
-200mV to +200mV
±(0.3%RDG+3DGT)
-2V to +2V
0% to 25% FS;
-20V to +20V
±(0.3%RDG+2DGT)
25% to 110% FS.
DC: ±(0.1%RDG+3DGT)
0% to 25% FS;
-200mA to +200mA
±(0.1%RDG+2DGT)
-2A to +2A
25% to 110% FS.
-5A to +5A
DC/AC TRMS (45 to 65Hz)*:
-20V to +20V
±(0.3%RDG+3DGT)
-200V to +200V
0% to 25% FS;
-500V to +500V
±(0.3%RDG+2DGT)
25% to 110% FS.
±150 ppm/°C
- 199.9
- 1.999
- 19.99
- 199.9
- 1.999
- 19.99
+ 199.9
+ 1.999
+ 19.99
+ 199.9
+ 1.999
+ 19.99
HSX
±150 ppm/°C
- 199.9
- 1.999
- 5.00
- 19.99
- 199.9
- 500
+ 199.9
+ 1.999
+ 5.00
+ 19.99
+ 199.9
+ 500
Input impedances and overloads
Module
Inputs
-200µA to +200µA
-2mA to +2mA
-20mA to +20mA
-200mV to +200mV
-2V to +2V
-20V to +20V
-200mA to +200mA
-2A to +2A
-5A to +5A
-20V to +20V
-200V to +200V
-500V to +500V
Type
DC/AC
DC/AC
DC/AC
DC/AC
DC/AC
DC/AC
DC/AC
DC/AC
DC/AC
DC/AC
DC/AC
DC/AC
Impedance
≤2.2kΩ
≤22Ω
≤22Ω
≥2.2kΩ
≥200kΩ
≥200kΩ
≤1Ω
≤0.012Ω
≤0.012Ω
≥2MΩ
≥2MΩ
≥2MΩ
Overload (continuous)
5mA
50mA
50mA
10V
50V
50V
0.8A
7.5A
7.5A
750V
750V
750V
Overload (1s)
10mA
150mA
150mA
20V
100V
100V
1A
100A
100A
1000V
1000V
1000V
LSE
HSX
*
<45Hz >65Hz= ±(0.5%RDG+3DGT) 0% to 25% FS; ±(0.5%RDG+2DGT) 25% to 110% FS.
( )
The min. indication for TRMS measurement (AC or DC) is 0; it is possible to modify the decimal point position.
2
Specifications are subject to change without notice
LDM35HDS 0405
LDM35H
Output specifications
Alarm outputs
Alarm type
(on request)
Active alarm for out-of-range,
up alarm,
down alarm,
down alarm with
start-up deactivation,
up alarm with latch,
down alarm with latch
Adjustable from 0 to 100%
of displayed range
0 to 100% of displayed range
0 to 255 s
0 to 255 s
Selectable: normally
energized/de-energized
500 ms, with filter excluded,
without alarm on-time delay
Up to 2
Type SPDT
AC 1: 5A, 250VAC
DC 12: 5A, 24VDC
AC 15: 2,5A, 250VAC
DC 13: 2,5A, 24VDC
4000 V
RMS
output to
measuring input,
4000 V
RMS
output to
power supply input.
LSE input
13 VDC ±10%
max. 50 mA
25V output to
measuring input,
4000 V output to
power supply input
rms
rms
Insulation
Alarm set-point
Hysteresis
On-time delay
Off-time delay
Output status
Min response time
Output channels
Excitation output
Voltage
Insulation
Software functions
Min / Max storage
Automatic storage
(in the EEPROM) of the
minimum and maximum
measured value from the
previous memory reset
Numeric code max 4 dgt
2 levels of data protection.
0 to 4999 completely protected.
5000 to 9999 access to
programming is protected .
Alarm set-points are directly
programmable from the
measuring mode.
Depending on the input:
- measuring range
- measuring type (TRMS or DC).
Automatic or from 100.0 to
999.9 ms only in the current
and voltage measurement.
Electrical scale compression,
displayed scale
compression/expansion
(max. 2 without filter, up to
10 with filter)
Programmable within the
whole measuring range
Decimal point position
Displayed range
Diagnostics
Programmable within the
displayed range
Programmable within
the displayed range.
The display flashes when the
limits of the displayed range
are exceeded, the data
are updated up to 20%
of the rated displayed range.
0 to 1999
1 to 32
3 1/2 DGT or 3 DGT plus
dummy zero.
Selection of min value
of the input range.
Selection of max value of
the input range.
Selection of decimal point
position.
Selection of min
displayable value.
Selection of max displayable
value.
Password
1st level
2nd level
Measurement selection
Digital filter
Filter operating range
Filtering coefficient
Display selection
Scaling
Integration time selection
Scaling factor
Operating mode
Electrical range
Specifications are subject to change without notice
LDM35HDS 0405
3
LDM35H
General Specifications
Operating
temperature
Storage
temperature
Insulation reference
voltage
Insulation
Dielectric strength
Rejection
NMRR
CMRR
EMC
0° to 50°C (32° to 122°F)
(R. H. < 90% non-condensing)
-10° to 60°C (14° to 140°F)
(R.H. < 90% non-condensing)
300 V
RMS
to ground
(500V input)
See table “Insulation between
inputs and outputs”
4000 V
RMS
for 1 minute
40 dB, 40 to 60 Hz
100 dB, 40 to 60 Hz
EN61000-6-2, IEC61000-6-2
EN61000-6-3, IEC61000-6-3
Safety Standards
Safety
Connections
Wire section
Housing
Dimensions
Material
Protection degree
Weight
Approvals
EN 61010-1, IEC 61010-1
Screw type
Max 2.5mm
2
1/8 DIN, 48 x 96 x 83 mm
PC-ABS,
self-extinguishing: UL 94 V-0
Front: IP65
Connections: IP20
340 g approx (packing
included)
CE, UL e CSA in progress
Supply Specifications
AC/DC voltage
90 to 260V (standard)
18 to 60V (on request)
Energy consumption
≤
8VA/4W (90 to 260V)
≤
8VA/4W (18 to 60V)
Excitation output
Insulation between inputs and outputs
Meas.
inputs
Meas.
inputs
-
4kV
25V
4kV
4kV
Relay
output
4kV
-
4kV
4kV
4kV
AUX p.
supply
25V
4kV
-
4kV
4kV
90-260VAC/
DC p.supply
4kV
4kV
4kV
-
-
18-60VAC/
DC p.supply
4kV
4kV
4kV
-
-
V
30
Continuous
max. 30s
25
Relay
output
20
AUX p.
supply
15
90-260VAC/
DC p.supply
10
18-60VAC/
DC p.supply
5
0
10
20
30
40
50
60
mA
The excitation output is constant and indepen-
dent of power supply’s voltage.
Used calculation formulas
Only for TRMS Measurements
Instantaneous effective
voltage (TRMS)
V
1
=
1
×
n
å
1
n
(
V
1
)
2
i
Instantaneous effective
current (TRMS)
A
1
=
n
1
×
å
(
A
1
)
i
2
n
1
4
Specifications are subject to change without notice
LDM35HDS 0405
LDM35H
Wiring diagrams
Process signal wiring diagrams
LSE
32 31 30 29 28
N.C.
N.O.
COM
20V 0.2mA
20mA
2V 200mV COM 2mA
Fig. 1
LSE
32 31 30 29 28
N.C.
N.O.
COM
20V 0.2mA
20mA
2V 200mV COM 2mA
Fig. 2
LSE
32 31 30 29 28
N.C.
N.O.
COM
20V 0.2mA
20mA
2V 200mV COM 2mA
Fig. 3
AUX- AUX+
AUX- AUX+
AUX- AUX+
1
2
3
4
5
6
-~
1
2
3
4
5
6
1
2
3
4
5
6
-~
+~
Probe
z
+~
z
Voltage measurements
+ -
Probe Signal output
- +
Probe power supply
Current measurements
Voltage measurements
4-wire connection probe
LSE
32 31 30 29 28
N.C.
N.O.
COM
20V 0.2mA
20mA
2V 200mV COM 2mA
Fig. 4
LSE
32 31 30 29 28
N.C.
N.O.
COM
20V 0.2mA
20mA
2V 200mV COM 2mA
Fig. 5
LSE
32 31 30 29 28
N.C.
N.O.
COM
20V 0.2mA
20mA
2V 200mV COM 2mA
Fig. 6
AUX- AUX+
AUX- AUX+
AUX- AUX+
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
Probe
Probe
Probe
+ -
Probe Signal output
- +
Probe power supply
+ -
Probe Signal output
- +
Probe power supply
+ -
Probe Signal output
- +
Probe power supply
Voltage measurements
3-wire connection probe
Current measurements
4-wire connection probe
Current measurements
3-wire connection probe
High-level signals wiring diagrams
LSE
32 31 30 29 28
N.C.
N.O.
COM
20V 0.2mA
20mA
2V 200mV COM 2mA
Fig. 7
HSX
32 31 30 29 28
N.C.
500V
200V
20V
N.O.
COM
5A
2A
Fig. 8
HSX
32 31 30 29 28
N.C.
500V
200V
20V
N.O.
COM
5A
2A
Fig. 9
AUX- AUX+
COM 200mA
COM 200mA
1
2
3
4
5
6
-~
1
2
3
4
5
6
-~
1
2
3
4
5
6
Probe
+ -
Probe Signal output
- +
Probe power supply
z
+~
+~
z
Voltage measurements
Current measurements
2-wire connection probe
Current measurements
Specifications are subject to change without notice
LDM35HDS 0405
5
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