Voltage Measuring Transducer for AC Voltage
MCR-VAC-UI-0-DC
1. Description
• 3-way electrical isolation
• TRMS measurement
• Adjustable voltage ranges
• ZERO/SPAN adjustment ±20%
Voltage transducers measure AC voltages in several
signal ranges from 0…24 V AC to 0…370 V AC and
convert them into standardized analog signals.
The input voltage ranges of input terminals 1…7
can be adjusted by ±20% using an adjustment
potentiometer.
The input, output, and supply are electrically isolated
from one another. Upon delivery, the voltage
transducer is set to 0…24 V AC input and 0…10 V DC
output and is ready for operation. If you set the device
to other input/output values you must carry out a
ZERO/ SPAN adjustment using the potentiometer on
the front plate.
2. Method of Operation
The input circuit divides the AC voltage at terminals
1…7. The resultant signal is transmitted electrically
isolated to the output circuit. This forms the r.m.s. value
and provides a standardized analog signal at the
output.
99
When using the voltage transducer, ensure that the
potential difference between terminal 1…7 and
ground potential PE, and terminal 8 and ground
potential PE does not exceed Urms = 444 V
(prerequisite for ungrounded circuits).
In AC voltage networks, this potential difference
should not exceed Urms = 250 V (prerequisite for
grounded circuits).
If all of these conditions are met, safe isolation is
provided between the input, output, and supply.
114,5
3. Area of Application
Headquarters: © Phoenix Contact GmbH & Co. KG • Flachsmarktstraße 8 • 32825 Blomberg • Germany
Phone +49 - 52 35 - 30 0 • Fax +49 - 52 35 - 34 12 00 • www.phoenixcontact.com
Local contact: www.phoenixcontact.com/salesnetwork
22,5
Voltage Measuring Transducer for AC Voltage – MCR-VAC-UI-0-DC
4. Technical Data
IN
0-370V
0-250V
0-170V
0-120V
0-80V
0-54V
0-36V
0-24V
GND 1
OUT
9 O UT I
0 O UT U
! GND 2
" GND 2
1
2
3
4
5
6
7
8
§ 24VDC
$ 24VDC
% GND 3
& GND 3
J1
J1
8
M3
rigid
Connection data
[mm2]
0.2-2.5
MCR-VAC-UI-0-DC
flexible
for converting AC voltages
from 0...20 V AC to 0...440 V AC
AWG
0.2-2.5
24-14
Aa
Description
Output
signal
MCR voltage measuring transducer,
for AC voltages from
0...20 V AC to 0...440 V AC
0...10 V/
0(4)...20 mA
Type
Order No.
Pcs.
Pkt.
MCR-VAC-UI-0-DC
28 11 10 3
1
Technical Data
Input
Input voltage range
Input resistance
Input voltage range
Input resistance
Adjustment options:
ZERO
SPAN
Frequency response
Nominal voltage ungrounded:
Nominal voltage to ground 1)
Output
Output signal
Maximum output signal
Load
Ripple
General Data
Supply voltage
Current consumption
Transmission error
Temperature coefficient
Limit frequency (3 dB)
Step-response (10 - 90%)
Test voltage:
Ambient operating temperature range
Electromagnetic compatibility
• Noise emission
• Immunity to interference
Voltage/current
Voltage/current
Voltage/current
Input/output
Power supply/output
0…370 V AC 0…250 V AC
370 kΩ
250 kΩ
0 … 80 V AC 0 … 54 V AC
80 kΩ
54 kΩ
±20%
±20%
45 Hz - 400 Hz
440 V
250 V
0…170 V AC
170 kΩ
0 … 36 V AC
36 kΩ
0…120 V AC
120 kΩ
0 … 24 V AC
24 kΩ
0 … 10 V/0(4) … 20 mA
+15 V/+30 mA
> 10 kΩ/< 500 Ω
< 50 mVpp
18.5 … 30.2 V DC
< 45 mA
< 1.5% of the final value
–
–
250 ms
3.3 kV, 50 Hz, 1 minute
1.0 kV, 50 Hz, 1 minute
-25°C to +60°C (-13˚F to +140˚F)
c Conformance with EMC Directive 89/336/EEC
EN 50 081-2
EN 50 082-2
PHOENIX CONTACT page 2 of 5
Voltage Measuring Transducer for AC Voltage – MCR-VAC-UI-0-DC
c
Conformance With EMC Directive 89/336/EEC
and Low Voltage Directive 73/23/EEC
EMC (Electromagnetic Compatibility)
Noise immunity in accordance with EN 50082-2, EN 50082-1
• Electrostatic discharge (ESD)
EN 61000-4-2
8 kV air discharge 2)
• Electromagnetic HF field
Amplitude modulation
Pulse modulation
ENV 50140
ENV 50140
3 V/m 1)
3 V/m 1)
• Fast transients (burst)
EN 61000-4-4
Input/output/supply
2 kV/5 kHz 2)
• Surge current loads (surge)
EN 61000-4-5
Input/output: 2 kV/42 Ω 2)
Supply: 0.5 kV/2 Ω 2)
• Conducted interference
EN 61000-4-6
Input/output/supply
10 V 1)
Class A
EN 55011
Noise emission in accordance with EN 50081
EN 61000 corresponds to IEC 1000/
EN 55011 corresponds to CISPR11
1)
2)
Criterion A: Normal operating characteristics within the
specified limits.
Criterion B: Temporary adverse effects on the operating
characteristics, which the device corrects automatically.
Class A:
Industrial application, without special
installation measures
Voltage Measuring Transducer for AC Voltage MCRVAC-UI-0-DC
1 ZERO/SPAN potentiometer
I
U
D
N
R G
E D2 ND2
W N
G
2
O G
P 24V UT ND
+ O G
4V
2
-U
N
PA
S
C
VA
R-
MC
O
R
E
Z
2 Plug-in screw-cage terminal blocks
5
+2
1
DC
I-B
R
E
W
O
P
U
3 Housing cover, can be removed to
set the jumpers
1
2
IN
5
U
U
3
6
U
U
4
7
U
U
G
N
1
D
1
2
2
C
-D 3
I-B
-U 10
AC 11
U
O
R-V: 28
9 OU
MC.-Nr.
0 GN
T
Art
OU
! GN
"
§
$
%
&
3
4
4 Metal lock for fastening on the DIN rail
5
6
5 Plug-in screw-cage terminal block
IN
7
8
V
70
V
50
V
70
V
20
3
1
2
3
4
9
10
I
T
OU U
11
T
OU 2
12 3
D
1
GN 2
D
C
14
GN 4VD
2
C
15
+ VD
4
16
+2 D 3
GN 3
D
GN
J1
5
6
7
8
J1
1
2
3
V
70
0-3 0V
5
0-2 0V
7
0-1 0V
2
0-1
S
4
V
AL
80
OV
0- 4V
V
PR
24
5
5
AP
0- V/0/
6 - 36
N
0
1
E
D
N
7
GN ATIO
8
OB
PR
AP
4
Fig. 05
PHOENIX CONTACT page 3 of 5
Voltage Measuring Transducer for AC Voltage – MCR-VAC-UI-0-DC
5. Connection Notes
N
PA
S
VA
RMC
R
E
W
O
P
U
1
IN
2
5
U
U
Caution: Never carry out work when the
power is turned on, this is highly
dangerous.
3
6
U
U
4
7
U
U
G
N
D
1
1
2
3
4
MC
t.Ar
Table 1:
Selecting the input voltage range (see also Fig. 08)
2
5
6
IN
7
Input
Voltage
Adjustment
Range
(±20%)
[V AC]
Input
Terminal
0...370 V
(296 - 444)
1
0...250 V
(200 - 300)
2
0...170 V
(136 - 204)
3
0...120 V
(96 - 144)
4
0...80 V
(64 - 96)
5
0...54 V
(43 - 65)
6
0...36 V
(28 - 43)
7
Jumper/
Setting
8
V
70
V
50
V
70
V
20
1
1
2
3
4
J1
5
6
7
8
J1
1
2
3
0...24 V
(19 - 29)
0V
37
0- 0V
25
0- 0V
7
1
0- 0V
12
0-
4
V
80
0- 4V
V
24
5
5
0- V/0-
Fig. 06
J1/setting 1
J2
J1/setting 2
Factory
setting
7
J3
1
2
0-20
4-20
J1
1
2
36V
24V
J2
If the voltage signal exceeds the voltage
range specified at the input signal
terminal by more than 15%, the input
circuit may be damaged.
J3
1
2
0-20
4-20
5.1. Opening the Device (Fig. 06)
The locked housing cover is released on both sides
using a screwdriver 1. The housing cover and
electronics can now be pulled out about 3 cm
(1.181 in.) 2.
Fig. 07
5.2. Jumper Setting (Fig. 07/08)
Insert the jumpers in the desired positions to set the
input voltage (Fig. 08) and current output (Fig. 07).
Table 2:
Selecting the standard output signal (Fig. 07)
Output
Jumper
Setting
0...10 V
J2/J3
1
0...20 mA
J2/J3
1
4...20 mA
J2/J3
2
J2
1
2
J3
0-20
4-20
J1
1
2
36V
24V
J1
Finally, close the housing until it engages with a click.
Every time the input or output range is modified, a
ZERO/SPAN adjustment must be carried out.
1
2
36V
24V
Fig. 08
PHOENIX CONTACT page 4 of 5
Voltage Measuring Transducer for AC Voltage – MCR-VAC-UI-0-DC
6. ZERO/SPAN Adjustment
+2
R G
E D2 ND2
W N
G
O V G T D2
4
U GN
+2
I
U
O
N
D
2
O
R
E
Z
C
-D
I-B
U
CVA
RC
M
P
4V
Allow the module to warm up for 4
minutes before starting the adjustment
N
PA
S
R
E
W
O
P
1
IN
2
5
U
U
3
6
U
U
4
7
U
U
G
N
D
1
d) Zero point adjustment
• Connect a calibration source to the input terminals
(U(1-7) and GND1) and specify a voltage of 0 mV.
• Set the output signal value using the ZERO
potentiometer.
Voltage output (0…10 V): UOUT = 0 V
Current output (0…20 mA): IOUT = 0 mA
Current output (4…20 mA): IOUT = 4 mA
U
Upon delivery, the module is set to 0-24 V input and
0…10 V output.
Two potentiometers are available on the front side of
the module for adjustment (Fig. 09):
ZERO: Zero point adjustment
SPAN: Final value adjustment
3
4
C
-D
-B 3
UI1 10
C
U
VA 1
O
R-r.: 28
9 OU
MC
N
.
0 GN
t
T
Ar
OU
! GN
"
§
$
Fig.
09
 PHOENIX CONTACT
July 1, 2001
TNR: 5106446-00
http://www.phoenixcontact.com
b) Final value adjustment
• Use the calibration source to specify the maximum
voltage used in the framework of the input voltage
range (table 1).
• Set the output signal value (UOUT = 10 V and IOUT =
20 mA) using the SPAN potentiometer.
PHOENIX CONTACT page 5 of 5