handwheel.is.rotated.clockwise.the.output.shaft.of.the.actuator.also.rotates.clockwise.
(when looking at the shaft towards
the control box).
.On.condition.that.the.valve.nut.is.provided.with.left-hand.thread,.the.actuator.closes.the.valve.
Torque-limit switches in the actuator are set and work when the actuator is under voltage.
When using the manual control, ie. actuator is controlled mechanically, the torque-limit switches
doesn´t work and the valve can be damaged.
5. ACTUATOR OUTFIT
Position indicator
The.actuator.can.be.fitted.with.a.display.as.an.option.for.
DMS2 ED.electronic.system..Actuator.with.DMS2.electronic.
system.is.equipped.with.two-line.display..
MOKED.actuator.can.be.also.fitted.with.a.mechanical.local.position.indicator.
Anti-condensation heater
The.actuators.are.fitted.with.an.anti-condensation.heater.preventing.condensation.of.water.vapour..Connects.to.net.
with.voltage.of230.V.mains.and.is.connected.to.a.thermostat.
Local control
The.local.control.is.used.to.control.the.actuator.from.the.installation.site.
Local.control,.when.equipped.with.anactuator,.consists.of.two.switches..One.chooses.between.LOCAL.mode.–.0.–.REMOTE.
and.the.other.between.OPEN.–.STOP.–.CLOSE.
6. ELECTRIC PARAMETERS
External electric connection
The.terminal.board.of.the.actuator.is.fitted.with.terminals.allowing.one.copper.or.aluminium.conductor.with.a.maximum.
cross-section.of.2.5.mm
2
.or.two.conductors.with.the.same.cross-sectional.area.up.to.1.mm
2
.to.be.connected..
Connecting.of.actuators.with.connector.–.on.special.request.
Actuator internal wiring
The. internal. wiring. diagrams. of. the.
MODACT MOKED. actuators. with. terminal. designation. are. shown. in. this.
Mounting.and.operating.instructions.
Each.actuator.is.provided.with.its.internal.wiring.diagram.on.the.inner.side.of.the.actuator.cover..The.terminals.are.
marked.on.a.self-adhesive.label.attached.to.a.carrying.strip.under.the.terminal.block.
Isolation resistance
Isolation.resistance.of.electric.control.circuits.against.the.frame.and.against.each.other.is.min..20.M
Ω
..After.a.dump.
test,.isolation.resistance.of.control.circuits.is.min..2.M
Ω
..See.Technical.specifications.for.more.details.
Overheating protection of electric motor
All.electric.motors.have.thermal.fuses.in.their.winding..They.serve.as.an.additional.protection;.they.do.not.substitute.
the.overcurrent.protection.or.circuit.breaking..
The.fuses.of.single-phase.electric.motors.are.internally.interconnected.with.the.winding.and,.in.case.of.overheating,.
they.cut.out.the.electric.motor;.after.cooling.down,.they.cut.it.in.automatically..
The.fuses.of.three-phase.electric.motors.are.separately.led.out.and.they.can.be.connected.into.control.or.signalling.
circuits..They.are.connected.to.the.actuator.terminal.board.as.a.standard.for.MOKED.63.
(type no. 52 325)
.only.
Load-bearing.capacity.is.250.V.AC./.2.5.A.
Electric strength of electric circuits isolation
Circuits.of.anti-condensation.heater.
1.500.V,.50.Hz.
Electric.motor..
Un.=.1.x.230.V.
1.500.V,.50.Hz
.
Un.=.3.x.230/400.V.
1.800.V,.50.Hz
Deviations of basic parameters
Tripping.torque.
.
±15.%.of.max..tripping.torque
Shifting.time.of.output.shaft..
+10.%
.
.
-.15.%.
of.rated.value
Setting.of.working.stroke..
±1°
6
