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V3IS00197-031
Mod. MCR
User Manual
MOTOR ALTERNATION CONTROL RELAY
Read all the instructions carefully
 ThemotorcontrolrelayMCR is an electronic command device in a standardised
4-module DIN container, to control the motor alternation.
SAFETY WARNINGS
During the installation and operation of the instrument, proceed in accordance with the
instructions below:
1) The instrument should be installed by a competent operator following the
installation diagrams carefully
2) The instrument should be installed in a panel from which no access can be gained to
the terminals after installation
3) Do not power or connect the instrument if any part of it is damaged
4) The electrical system of the building in which the instrument is to be installed
should have a switch and a protective device against over-currents
5) The instrument is designed for installations with over-voltage category III and
pollution level 2, in accordance with the EN 61010-1 standard.
Code Model Description
VP813000
MCR048
Motoralternationrelay24/48V
VP812200
MCR230
Motoralternationrelay115/230V
VP811400
MCR400
Motoralternationrelay400V
TECHNICAL SPECIFICATIONS
• Powersupply:24/48/115/230/400V~(-15%÷+10%),50/60Hz
• Absorption:3,5VA(2,5W)
• Terminal:6mm2block
•
Relay 1 output
: –relaywithexchangecontact8A/250V~
–maximumswitchablepower2000VAcos =1
•
Relay 2 output
: –relaywithexchangecontact8A/250V~
–maximumswitchablepower2000VAcos =1
• •Signalling: –GreenLED:poweron
  –RedLED:relay1intervention
  –RedLED:relay2intervention
• Operatingtemperature:–5°C÷+50°C
• Storagetemperature:–10°C÷+70°C
• Humidity:20%÷90%,non-condensing
• Insulation:powersupplyandloadcircuits,galvanicallyinsulatedatreinforcedinsulation
levelinaccordancewiththeEN61010-1standard
• Container:4-moduleDIN,colourRAL-7035grey
• Casingmaterial:self-extinguishinginclassV0,inaccordancewiththeUL-94standard
• Degreeofprotection:IP20/IP51whencorrectlyinstalledinanelectricalpanel
USE
• Thisdeviceisdesignedtogivethebalancedwearandtearofpumps,compressors,
generators,etc.,whentwounits,oneinoperationandoneback-up,areinstalled.
• Theoperatingprincipleisbasedonthealternationofthemotorstart-upcommands
eachtimetheinputcontactpilotedbyanoutsideautomaticdevice(suchasapressure
switch)isclosed.
• Aswellasthistypeofalternation,thistypeofrelaycanalsobeusedforthealternate/
simultaneouscommandoftwomotors,andforthecascadecommandoftwomotors.
OPERATING
ALTERNATING COMMAND OF TWO MOTORS
• Inthiscase,onlythemain
P1/G1
contactisused,pilotedbyanoutsideautomaticdevice
(suchasapressureswitch/oat).
• Eachinterventionofthe
P1/G1
contactcausesthealternatingstart-upofoneofthetwo
motors,exchangingtheoperatingfunction(seethe
“Operating Diagram 1”
).
ALTERNATING/SIMULTANEOUS COMMAND OF TWO MOTORS
• Inthiscasethemain
P1/G1
contactandthesecondary
P2/G2
contactsareused,
pilotedbytwooutsideautomaticdevices(suchastwopressureswitches)adjustedto
twodifferentinterventionthresholds.
• Eachinterventionofthe
P1/G1
contactcausesthealternatingtart-upofoneofthetwo
motors,exchangingtheoperatingfunction.
• Theinterventionofthe
P2/G2
contactcausesthestart-upofthesecondmotor,thus
settingupthe
emergency help
function(when,forexample,asinglepumpisunableto
satisfythepumpingrequirements.
See the
“Operating Diagram 2”
.
• Whenthepowersupplylineisinsertedwhenboththe
P1/G1
and
P2/G2
contacts are
closed,thestart-upofthesecondmotorisdelayedby2seconds,thushalvingthethrust
currentandtheconsequentoscillationofthecoilsupplyvoltage.
• Thesecondary
P2/G2
contactalsoguaranteestheemergencyhelpfunctionintheevent
offailureofthemain
P1/G1
contact.
• Thisthereforemakesitpossibletostart-uponeofthemotorsinstantaneously,andthe
back-upmotorafteradelayof2seconds.
CASCADE COMMAND
• When2ormorerelaysareused,thecascadeoperationof3ormoremotorsispossible,
withtheexchangeofthe
operating
and
emergency help
functionsofthevarious
motorsasrequired..
REFERENCE STANDARDS
ConformitytotheEUdirectives:
2006/95/EC(LowVoltage)
89/336/EECmodiedby92/31/EECand93/68/EEC(EMC)
isdeclaredwithreferencetothefollowingharmonisedstandards:
Safety:
EN61010-1
Electromagnetic compatibility:
EN61000-6-2,EN61000-6-4
Dimensions
Connection diagram
Operating diagram 1
ON ON
ON
Relay 1
Relay 2
MCR
65
87
45
60 72
Operating diagram 2
ON
OFF
ON
OFF
ON
OFF
ON
OFF
2s
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Power supply
P1/G1
P2/G2
Relay 1
Relay 2
Power supply
P1/G1
Relay 1
Relay 2
MCR048
MCR230
1
2
3
7
8
9
10
11
12
13
16
17
18
8A / 250 V ca
24 V ca (1-2)
115 V ca (1-2)
MCR048
MCR230
1
2
3
7
8
9
10
11
12
13
16
17
18
48 V ca (1-3)
230 V ca (1-3)
400 V ca (1-3)
MCR400
8A / 250 V ca
P1 / G1 P2 / G2P1 / G1 P2 / G2
relay 2 relay 2
relay 1 relay 1

Produktspecifikationer

Varumärke: Vemer
Kategori: Inte kategoriserad
Modell: MCR048

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