Panel Meters and Controllers
Controller for AC/DC Voltage Measurements
Type MDI 40 V
•
3 3/4-dgt multi-range µP-based controller
•
For AC/DC voltage measurements
•
Ranges from 200 mV to 500 V
•
All software functions selectable by key-pad
•
Peak/valley function
•
Password protection of programming parameters
•
2 independent alarm setpoints
•
Alarm for over-range, up-alarm, down-alarm, down
alarm with disabling at power-on, up/down-alarm with
latch
•
Degree of protection: IP 65
•
Optional analogue output (20 mA/10 VDC)
•
Optional serial RS 485 output
•
MODBUS, JBUS protocol.
Product Description
3 3/4-dgt multi-range µP-ba-
sed controller for AC/DC vol-
tage measurements. Scaling
and setpoints are fully pro-
grammable by user-friendly
key-pad. The MDI 40 V inclu-
des peak/ valley function and
password protection. The
housing is easy to mount and
ensures a degree of protec-
tion of IP 65.
Ordering Key
MDI40V0BD2A XX IX
Model
Measurement
Power supply
Setpoints
Signal Output
Engineering unit
Option
Type Selection
Measurements
V0B:
Standard (40-400 Hz)
200 mV
2V
20 V
200 V
500 V
V0T:
True RMS (40-1000 Hz)
200 mV
2V
20 V
200 V
500 V
Power supply
A:
B:
C:
D:
E:
F:
3:
6:
1)
Signal output
X:
A:
R:
S:
W:
Y:
None
Analogue: from 0 to
20 mA /from 0 to 10 V
Serial: RS 485
unidirectional
Serial: RS 485
bidirectional
Analogue (A)
+ serial (R)
Analogue (A)
+ serial (S)
Options
IX:
01:
XT:
Degree of protection
IP 65 (standard)
Interactive setpoints
+ IP 65
Tropicalization
+ IP 65
1)
1)
On request
24 VAC, -15% +10%,
50/60 Hz
48 VAC, -15% +10%,
50/60 Hz
115 VAC, -15% +10%,
50/60 Hz
230 VAC, -15% +10%,
50/60 Hz (standard)
120 VAC, -15% +10%,
50/60 Hz
240 VAC, -15% +10%,
50/60 Hz
9 to 32 VDC with
galvanic insulation
40 to 150 VDC with
galvanic insulation
1)
1)
1)
1)
1)
1)
1)
Input Specifications
Rated input
200 mV, 2 V, 20 V, 200 V,
500 V AC/DC, 40-400 Hz
Temperature drift
DC
AC
AC TRMS
Sampling rate
Display
Max. and min. indication
DC
AC
± 150 ppm/°C
± 200 ppm/°C
± 200 ppm/°C
4 times/s, dual slope
16 bits A/D converter.
7-segment LED,
h 14.2 mm
Max. 3999 min. -1999
Max. 3999 min. 0
Accuracy
DC
DC voltage measurements,
(@ 25°C)
± 0.1% f.s., ± 1 dgt
AC standard
AC voltage measurements
(@25°C, 50/60 Hz,5 to100%f.s.) ± 0.1% f.s., ± 2 dgt
AC TRMS
AC TRMS
(@ 25°C)
± 0.2% f.s., ± 2 dgt
Specifications are subject to change without notice (28.10.99)
1
MDI 40 V
Input Specifications (cont.)
AC Measurement
Standard
Measurement of the avera-
ge value resulting from the
sine half-wave rectification
of the input voltage by rms
calibration
True rms
Coupling type : AC
Crest factor:
≥
3
-199.9 to 199.9 mVDC
0 to 199.9 mVAC
Input impedance: 10 kΩ
-1.999 to 1.999 VDC
0 to 1.999 VAC
Input impedance: 100 kΩ
-19.99 to 19.99 VDC
0 to 19.99 VAC
Input impedance: 100 kΩ
Input ranges (cont.)
200 V
500 V
-199.9 to 199.9 VDC
0 to 199.9 VAC
Input impedance: 1 MΩ
-199 to 500 VDC
0 to 500 VAC
Input impedance: 1 MΩ
1.2 x rated input
2 x rated input
4 keys:
“S” for menu selection;
“UP” and “DOWN” for
value programming/function
selection;
“F” for special functions.
TRMS
Input ranges
200 mV
2V
20 V
Overload protection
Continuous
For 1s
Key-pad
Output Specifications
Alarms
Number of setpoints
Alarm types
2 independent (standard)
Over-range, up alarm, down
alarm, down alarm with dis-
abling at power-on, up alarm
with latch, down alarm with
latch
Interaction of the two set-
points (on request)
0 to 100% of the displayed
range
Programmable minimum and
maximum values
0 to 100% of the displayed
range
0 to 255 s
0 to 255 s
Normally energized/de-ener-
gized
2 x SPDT
5 A, 250 VAC/VDC, 40 W /
1200 VA, 130.000 cycles
≤
400 ms, filter excluded, set-
point on-time delay: “0”
2000 V between output
and measuring inputs, excita-
tion output
rms
Analogue output
Range
Scaling factor
Special function
Setpoint adjustment
Limits of setpoint adjustment
Hysteresis
On-time delay
Off-time delay
Relay status
Output type
Contact
Rating
Min. response time
Insulation
Accuracy
Response time (@ 25°C)
Temperature drift
Load: 20 mA output
10 V output
Insulation
0 to 20 mADC, 0 to 10 VDC
Programmable within the
whole range of the signal
output; it allows the mana-
gement of all values from 0
to 20 mA/ from 0 to 10 V
≤
500 ms
± 0.3% f.s.
± 200 ppm/°C
≤
500
Ω
≥
10 kΩ
By means of optocouplers,
500 V outputs to
measuring inputs
4000 V output to
supply input
rms
rms
Serial output
Type
Multidrop
Connections
Adresses/protocol
Data (unidirectional)
Dynamic (reading only)
Static (reading only)
RS 485
Unidirectional (std),
bidirectional (on request)
2 or 4 wires, max. distance
1200 m, termination and/or
line biasing directly on the
instrument
255, selectable by key-pad/
MODBUS, JBUS
Measurement, data hold of
minimum value, data hold of
maximum value, alarm status
All programming data
Excitation output
Voltage
Insulation
15 VDC non-stabilized/40 mA
max. (only in case of W or Y
option)
100 V output to
measuring input
4000 V output to
AC supply input
500 V output to
DC supply input
rms
rms
rms
2
Specifications are subject to change without notice (28.10.99)
MDI 40 V
Output Specifications (cont.)
Serial output (cont.)
Data (bidirectional, on request)
Dynamic (reading only)
Static (reading/writing)
Data format
Serial output (cont.)
Baud-rate
Measurement, data hold of
minimum value, data hold of
maximum value, alarm status
All programming data, min./
max. data hold reset, reset of
alarm set-points with latch
1-start bit, 8-data bit,
no parity, 1 stop bit
Insulation
1200, 2400, 4800 and 9600
bauds selectable
By means of optocouplers,
500 V output to
measuring inputs
4000 V output to
supply input
rms
rms
Software Functions
Peak and valley values
Automatic storage (RAM
only) of the min. and max.
value measured from the
last reset
Numeric code of max. 3 di-
gits; 3 protection levels of
the programming data
Password “0”, no protection.
Password from 1 to 127,
all data are protected
Password for 128 to 255,
all data protected except for
the setpoints
AC/DC voltage
Electrical scale compression,
compression/expansion of the
displayed scale (max. 2 with-
out filter, > 2 with filter)
Scaling factor (cont.)
Electrical scale
Decimal point position
Displayed scale
Diagnostics
Programmable within the
whole measuring range
Programmable within the
displaying range
Programmable within the
whole displaying range
The display flashes when the
limits of the displayed range
are exceede, the data are
updated up to the maximum
read-out
EEE (AD/DC)
- EE (DC)
From 0 to 3999
From 1 to 255
Password
1st level
2nd level
3rd level
Measurement selection
Scaling factor
Operating mode
Over range
Under range
Filter
Filter operating range
Filtering coefficient
Supply Specifications
AC supply
230 VAC, -15%+10%,
50/60 Hz (standard)
24 VAC, 48 VAC, 115 VAC,
120 VAC, 240 VAC,
-15%+10%, 50/60 Hz
(on request)
4000 V supply input to all
the other inputs/outputs
9 to 32 VDC,
galvanic insulation,
max. inrush current:
≤
1.2 A/200 ms (on request)
40 to 150 VDC,
galvanic insulation,
max. inrush current:
≤
0.6 A/200 ms (on request)
500 V supply input to all
inputs/outputs
5 VA (basic instrument),
7 VA max. with signal output
rms
rms
General Specifications
Operating temperature
Storage temperature
Insulation reference voltage
Dielectric strength
Noise 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 to ground
4000 V for 1 minute
rms
rms
Insulation
DC supply
Safety standards
Connector
Housing
Dimensions
Material
Degree of protection
Weight
Approvals
Insulation
Power consumption
40 dB, 40 to 60 Hz.
100 dB, 40 to 60 Hz.
IEC 60801-2, IEC 60801-3,
IEC 60801-4 (level 3),
EN 50 081-1, EN 50 082-1
EN 61 010-1, IEC 61010-1,
VDE 0411
Screw-type, detachable
1/8 DIN, 48 x 96 x 124 mm
ABS,
self-extinguishing: UL 94 V-0
IP 65 (standard)
Approx 520 g (Signal output
and packing included)
UL, CSA, CE
Specifications are subject to change without notice (28.10.99)
3
MDI 40 V
Dimensions
Terminal Board
OFF 27
ON +
POL.
TER.
200V
200V
20V
2V
1
2
3
4
Rx
_
_
_
_
0.2V _
26
_
Tx
SERIAL OUTPUT
RS485-RS422
25
+
24
_
23
_
22
+
IN 12V
21
+
ANALOG
OUTPUT
20
OUT V
_
18
17
_
+
IN 24V
_
+
+
OUT 20mA
OV 40/150V-
OV 8/32V-
OV~ 230V~
OV~ 115V~
OV~ 48V~
OV~ 24V~
14
15
16
19
_
15V/40mA
OUT
_
+
5
6
!
RELAY 2
N.C
7
8
N.O. COM. N.C
9
10
11
RELAY 1
N.O. COM.
12
13
Front Panel Description
2
2. Display
3 3/4-digit (maximum read-out 3999).
Alphanumeric indication by means of 7-segment display
for:
- Displaying of the measured value, over-range and
programming indications.
- Indication of programming parameters.
S
3
1
F
4
3. LED
- ”1” and ”2” LED indicators for alarm conditions
4. Engineering unit
Screen for interchangeable unit label.The symbols in the
shaded areas are those available on the set of engineering
unit labels supplied with the MDI (engineering unit label to
be inserted by customer).
W = 08
mV = 01
V = 02
kV = 03
µA = 04
mA = 05
A = 06
mW = 07
kW = 09
MW = 10
var = 11
kvar = 12
Mvar = 13
Ω
= 14
kΩ = 15
MΩ = 16
Hz = 17
kHz = 18
RPM = 19
m/s = 20
m/min = 21
°C = 22
% = 24 mm HG = 32
mbar = 25
bar = 26
psi = 27
ata = 28
ate = 29
kg/cm
2
= 30
l/min = 33
l/h = 34
kg/min = 35
ton/h = 36
m
3
/min = 37
m
3
/h = 38
mm = 39
cm = 40
m = 41
kg = 42
ppm = 43
kA = 44
cos
φ
= 45
m
3
= 46
µs = 47
1. Key-pad
Set-up and programming procedures are easily controlled
by the 4 pushbuttons.
“S”
- Selection key to select programming function (instrument
configuration) or measurement and alarm detection.
”
” and ”
”
- Up and down keys for increasing or decreasing program-
ming values.
- Selecting programming functions and instrument
configuration together with the ”S” key.
“F”
- Special function key for interaction between the two set-
points and for alarm latch reset.
°F = 23 mm H
2
O = 31
4
Specifications are subject to change without notice (28.10.99)
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