Dorby Czas MMR17-V3A-M230 Technical data
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MMR17-V3A-M230-108
Voltage monitoring in 3- and 1-phase mains
MMR17-V3A-M230-108
Technical data
Description
Output circuit
Contact arrangement
1 CO
Rated voltage
V AC
250/400
Switching current range AC1
DC1
A/V AC
A/V DC
8/250
8/24
Switching load range AC1
VA
2 000
Contact resistance
mΩ
≤ 100
Max. rated current A 8
Input circuit
Supply voltage Un DC/ AC (50-60Hz) = measured voltage
V
L1, L2, L3, N
Tolerance 0,8…1,2Un (11,5…276V)
Rated consumption AC
DC
VA
W
≤ 2.5
<2
Rated frequency
Hz
47…63
Rated surge voltage V 1000
Insulation
Insulation rated voltage
V AC
400
Rated surge voltage
V
4 000 1,2/50s
Overvoltage category III
Dielectric strength
Input – output
Open contact
V AC 4 000
1 000
Measuring circuit
Regulation range voltage min U
min
%
70…110% (161…253V)
Regulation range voltage max U
max
%
80…120% (184…276V)
Threshold voltage asymmetry U
asym
20 (46V)
Hysteresis voltage asymmetry
% 5 Functions MU, MW, MA, MS
Measurement accuracy
%
≤ 5
Setting accuracy % ≤ 5
Repeatability % ≤ 2
Temperature influence
%/ºC
≤ 0,05
Sampling frequency of the input process
Hz
2930
resolution converters
bits
9
Time module data
Setting range of time off delay
10s
Timing adjustment
smooth 0,05…1,0 x time range
Setting accuracy % 5
Repeatability % 0,5
Reset time
ms
≤ 500
General data
Electrical life AC1 at 1000 VA resistive load
cycles
≥ 1,5 x 105
Mechanical life
cycles
≥ 1 x 107
Dimensions (L x W x H) / Weight
mm / g
90 x 17,5 x 66 / 50g
Ambient temperature / storage temperature
ºC
-40…+70 / -20…+55
IP rating IP20
Relative humidity % 85
Shock resistance g 15
Vibration resistance
mm
0,35 10…55Hz
LED indicator 2 LED
The executive relay R is designed for
applications in automation and control
systems to control the voltage, asymmetry
and phase sequence in three- phase AC
networks or to control the AC/DC voltage in a
one-phase networks. It is used to protect the
receiver from voltage drop or rush beyond
the set threshold. Use of an universal power
supply powered from any input voltage (L1,
L2, L3) allows correct operation of the
measuring system in a wide range in the
presence of voltage on one, whichever
electric terminal. True RMS is an innovative
method for such products group and it
provides the highest accuracy regardless of
the AC input waveform, which may be
important in case of voltage deviation from
the ideal sine wave- due to a presence of
nonlinear loads in the circuit. The TrueRMS
method also allows the measurement of
constant DC voltages. The relay has an
adjustable off delay time in a range from 0.5s
to 10 s. Seven-position switch allows selection
of measurement undervoltage or window
functions and supplements them with voltage
asymmetry and phase sequence control.
Relay status is indicated by two LEDs.
Mounting
Mounted on DIN-rail TS 35 according to EN
60715
Mounting position: any
IP rating IP20
Tightening torque: max. 1 Nm
Terminal capacity: 1 x 0.5 to 2.5 mm²
with/without multicore cable end 1 x 4 mm2
without multicore cable end 2 x 0.5 to 1.5
mm² with/without multicore cable end 2 x
2.5 mm2 flexible without multicore cable
end.
Danger!
Ordering information
Read and understand these instructions before installing, operating or
maintaining the equipment.
Never carry out work on live parts! Danger of fatal injury! The product must not
be used in case of obvious damage. To be installed by an authorized person.
MMR17-V3A-M230-108
Voltage monitoring in 3- and 1-phase mains
Multifunction
TrueRMS actual voltage measurement method has been used
Function window, undervoltage, asymmetry, sequence
1 change over contact
Width 17.5 mm
Installation design
MMR17-3127 v1.0
2
Voltage monitoring in 3- and 1-phase mains
MMR17-V3A-M230-108
Functions
Dimensions Front panel view
Function - MS (sequence) – Phase sequence monitoring
When all the phases are connected in the correct
sequence and the measured asymmetry is less than the
set value, the output relay switches into on-position
(yellow LED illuminated). When the phase sequence
changes, the output relay switches into off‑position
(yellow LED not illuminated).
Functions - MA (asymmetry) – Asymmetry monitoring
As soon as the asymmetry exceeds the value at the Uas regulator, the set interval of the tripping delay (DELAY)
begins. After the interval has expired the output relay R
switches into off-position (yellow LED not illuminated).
MW (window) – The output relay R switches into on-
position again after the measured voltage reenters the
acceptance region
MU (undervoltage) – The output relay R switches into
on-position again after the measured voltage exceed
the Max-value.
The actual voltage measurement method- TrueRMS provides the highest accuracy regardless of the AC input waveform, which may be
important in case of voltage deviation from the ideal sine wave- due to a presence of nonlinear loads in the circuit. The TrueRMS method
also allows the measurement of constant DC voltages.
MMR17-3127 v1.0
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