Mains Powered Isolating
Signal Converter
MVCON
The mains powered MVCON Isolating Signal Converter
accepts a range of inputs including 4-20mA, thermocouple,
RTD and voltage signals and converts them to either voltage
or current DC output
■
Wide range of inputs available
■
Full 3-port isolation
■
Optional isolated transmitter supply
■
High accuracy, low cost
■
Zero and span pots for output adjustment
■
Wide range of power supply options
3
Year
See VCON for DC version see page 147
Guarantee
Options and ordering codes
MVCON HL – A A
XX – 1
B
Input type
Options
4-20mA
HL
A
0-20mA
HL
B
Tx Supply
(HL only)
Without
Tx Supply
B
0-30mA 2 sec delay
HL
C
0-1mA
HL
D
0-5Vdc
HL
E
1-5Vdc
HL
F
1
115Vac
0-10Vdc
HL
G
2
230Vac
18-26Vdc
HL
H
500R to 1K 3 wire Pot
HL
K
1K to 100K 3 wire Pot
HL
L
0-1A rms
HL
M
0-5A rms
HL
N
A
4-20mA
Type K 0-150˚C
TC
P
B
0-20mA
Type K 0-200˚C
TC
Q
C
0-30mA 2 sec delay
Type K 0-250˚C
TC
R
D
0-1mA
Type K 0-500˚C
TC
S
E
0-5Vdc
Type K 0-600˚C
TC
T
F
1-5Vdc
Type K 0-1200˚C
TC
U
G
0-10Vdc
Type K 0-250/500/1000˚C
TC
V
Type J 0-250˚C
TC
W
Pt100 3 wire ±30˚C
RTD
1
Pt100 3 wire 0-50˚C
RTD
2
Pt100 3 wire 0-100˚C
RTD
3
Pt100 3 wire 0-150˚C
RTD
4
Pt100 3 wire 0-200˚C
RTD
5
Pt100 3 wire 0-250˚C
RTD
6
Pt100 3 wire 0-400˚C
RTD
7
Pt100 3 wire 0-100/150/
200˚C
RTD
8
Supply type
Output type
Other ranges and thermocouple
types are available as detailed in the
product description, please contact
our sales department.
PRICE
INFORMATION
AND ORDERING
MVCON
Description
The MVCON Isolating Signal Converter can accept a wide
range of inputs including 4-20mA, thermocouple, RTD and
voltage signals. The units produce a high level DC output of
either voltage or current.
Inputs
Standard ranges are shown below – contact Sales for others.
MVCONHL for DC/AC Current and Voltage
0-20mA, 4-20mA, 0-10mA into 11Ω/22Ω
0-1V, 0-10V, 1-5V into 100kΩ/1Ω
Min and Max full scale ranges are:
DC current
0 to 50µA
0 to 10A
DC voltage
0 to 100mV
0 to 300V
AC current
0 to 100µA rms
0 to 10A rms
AC voltage
0 to 200mV rms
0 to 250V rms
2 wire pot
0 to 1kΩ
0 to 1MΩ
3 wire pot
1kΩ
10MΩ
Full 3 port isolation is standard but the unit can be supplied as:
Non-Isolated
Input Only Isolation
Output Only Isolation
Full 3-Port Isolation
The high level (HL) version can be factory configured to accept a
current, voltage or potentiometer input and provide a current or
voltage output. The Thermocouple (TC) version can be factory
configured to accept most thermocouple types and ranges and
provide a non-linearised output of current or voltage. The RTD
version can be factory configured to accept most types and ranges of
RTD (Pt100 Standard) and provide linearised output of current or
voltage.
Note: For input voltages greater than 30Vac or 60Vdc a divider unit
must be specified.
MVCONTC for Thermocouples
Types E, J, K, N, R, S, T, B non-linearised
Ranges 0-250, 0-500, 0-1200˚C (Others available)
Cold junction compensation
Upscale or downscale t/c burnout options
In addition a user configurable version of each type is available to
special request allowing several different input/output options to be
selected.
There is also an isolated transmitter supply option on the HL unit.
This provides an isolated 24Vdc supply which can be used to excite
any standard transmitter.
MVCONRTD for Resistance Thermometers
2 or 3 wire Pt100 or other linearised output
Ranges 0-250, 0-500, -100-100˚C (others available)
The unit may be powered from a wide range of power supplies,
ranging from 110Vac to 240Vac.
Outputs
DC Current and Voltage
0-20mA, 4-20mA, 0-10mA into a maximum 750Ω
0-1V, 0-10V, 1-5V into a minimum 750kΩ
Others available up to a maximum of:
Current: 0-20mA. Voltage: 0-15Vdc
▲
104.5mm
98mm
▲▲
▲
Dimensions and connections
123
▲
456
75mm
7. Process input -ve
8. Process input +ve
T/C -ve
T/C +ve
RTD -ve
RTD +ve
9. Trans supply +ve
T/C shield
RTD 3rd wire
10. Output -ve
12. Output +ve
▲
▲
22.5mm
▲
1. Power input live
3. Power input neutral
789
PRICE
INFORMATION
AND ORDERING
10 11 12
Specifications
Parameter
Supply voltage
Supply power
Input impedance (volt)
Input impedance (mA)
Volt drop (mA input)
Output linearity error
Temp coefficient
Load resistance error
Time constant (10-90%)
Operating ambient
Relative humidity
Isolation voltage see note 1
Surge voltage
Notes
Min
Typ
230Vac
100kΩ
0.02Ω
1MΩ
11Ω
0.2
0.03%
Max
2VA
10MΩ
5kΩ
0.25
0.1%
±100ppm/˚C
-10ppm/Ω
Comments
Options: 115Vac or 230Vac 50/60Hz
Dependent on range (Typ=10V)
Dependent on range (Typ=20mA)
At 20mA input
0≤RL ≤750Ω
30ms
0˚C
0%
1kV
55˚C
90%
2.5kV for 50µS
Transient of 10kV/µS
Absolute maximum ratings indicate sustained limits beyond which damage to the device may occur.
Accuracy figures based on 24Vdc supply, high level (HL) unit, 4-20mA output with 250Ω load and 20˚C ambient.
Device is protected against reverse polarity connection.
1: MVCON-HL does NOT provide safety isolation when the input is connected to the mains.
Device incorporates a non-resettable thermal cut-out in the mains input.
IMPORTANT: Mains input should be protected by a 100mA anti-surge fuse (T100mA) with a voltage rating of
250Vac and a breaking capacity of 35A at 250Vac placed in series with the live connector.