
100.210-IOM (FEB 2015)
Page 29
VYPER
™
VARIABLE SPEED DRIVE
INSTALLATION
INTERFERENCE WITH ELECTRONIC
EQUIPMENT
RFI. /. EMI. are. acronyms. for. Radio. Frequency. Interference.
and. Electro-Magnetic. Interference.. Any. electronic. device.
that.switches.currents.at.high.speed.is.capable.of.generat-
ing.RFI.and.EMI..Some.typical.sources.are.computers,.light.
dimmers,.and.motor.speed.controls..RFI.refers.to.electrical.
fields,.which.are.transmitted.through.the.air..EMI.refers.to.
electrical.currents,.which.are.conducted.in.wiring.connected.
to.the.device.
The.Vyper™.generates.both.RFI.and.EMI...Most.RFI.energy.
generated.by.Vyper™.is.contained.within.the.Vyper™.cabinet...
The.EMI.energy.is.conducted.back.in.to.the.power.line.and.
may.be.capable.of.causing.interference.to.other.electronic.
equipment.that.is.powered.by.the.same.electrical.distribu-
tion.system.
VSDs. are. used. successfully. in. many. installations,. which.
utilize. sensitive. electronic. equipment.. however,. in. some.
highly.sensitive.cases,.there.may.be.electronic.equipment.
that.is.affected.by.Vyper™.originated.EMI..For.those.cases,.
Johnson. Controls-Frick. recommends. a. harmonic. Filter. to.
reduce.conducted.EMI.levels.by.reducing.current.harmonics.
to.limits.defined.by.the.IEEE.519-1992.standard..The.filter.is.
located.within.the.Vyper™.cabinet.and.is.factory.installed.
and.tested..The.filter.can.also.be.retrofitted.to.an.existing.
Vyper™.
All.hospital.applications.require.the.IEEE.519.harmonic.filter.
and.is.also.strongly.recommended.for.any.installation.with.
sensitive.electronic.equipment.connected.to.the.electrical.
distribution.system..The.filter.is.also.required.whenever.a.lo-
cal.utility.places.a.limit.on.current.distortion.for.an.electronic.
device.. Applications. that. need. 8%. or. less. total. harmonic.
current.distortion.require.the.IEEE.519.harmonic.filter.
INTERFACING ELECTRICAL EQUIPMENT
There.are.many.low-voltage.DC.signals.in.the.Vyper™.that.
may.be.picked.up.from.other.electrical.devices.or.wiring.in.
the.vicinity.of.the.Vyper™.electronic.controls..Use.the.fol-
lowing.guidelines.to.prevent.the.Vyper™.electronic.controls.
from.picking.up.low-voltage.DC.signals.and.possibly.cause.
injury.or.damage.to.the.electronic.controls:
• Never route non-VSD wiring through the Vyper™
cabinet or tie in external equipment to the Vyper™
control wiring in any way.
• Never wire a control system to the Vyper
™
circuitry.
• Never use 120V supply to feed the VSD control wiring.
The Vyper™ has it’s own internal power supply. Using
an external power supply may damage the Vyper™
and may also cause hazardous working conditions for
service and operating personnel.
SYSTEM OPERATING CONDITIONS
Refrigeration. systems. considered. for. Vyper™. application.
must.be.in.good.operating.condition..A.site.survey.should.be.
completed.with.the.help.of.a.trained.Frick.service.technician....
The.technician.will.review.the.condition.of.the.equipment.
and.recommend.actions.that.must.be.taken.to.ensure.that.
the.equipment.is.in.good.operating.condition..This.survey.
must.be.taken.and.required.repairs.made.prior.to.the.ap-
plication.of.the.Vyper™.
PNEUMATIC CONTROLS
Pneumatic.controls.must.be.replaced.with.electronic.controls.
to.be.compatible.with.the.Vyper™.and.the.Quantum™LX.
control.panel.
VYPER
™
PREINSTALLATION SITE CHECKLIST
Before.attempting.to.install.a.Vyper
™
.Drive.system,.please.perform.a.site.inspection.to.assure.that.the.following.requirements.
are.met..(Where.Applicable)
.����������������������� Verify.that.the.coolant.(water.or.glycol).is.available.for.the.Vyper
™
.heat.exchanger.connections..hard-pipe.the.
coolant.supply.in.accordance.to.all.local.and.national.piping.codes..Sufficient.coolant.flow.and.temperature.
levels.must.be.available.to.the.Vyper
™
.VSD.at.installation..When.hard-piping.the.coolant.supply,.take.into.
consideration.that.room.is.required.in.order.to.add.coolant.to.the.system.
.����������������������� Verify.that.the.compressor.package.temperature.sensors.are.RFI.suppression.type.(639A0151G01)
.����������������������� Incoming.power.cables.must.enter.through.the.panel.supplied.on.the.top.of.the.left.side.of.the.unit..Power.
cables.must.be.in.accordance.with.local.and.national.electrical.codes.and.current.safety.standards..See.the.
Power.Wiring.section.in.this.manual.for.more.details.
.����������������������� Verify.that.the.power.cable.lengths.from.the.Vyper
™
.to.the.compressor.motor.do.not.exceed.50.feet.(15.meters).
and.the.location.of.the.Vyper
™
.is.suitable.for.mounting.
.����������������������� Verify.that.the.motor.is.suitable.for.Inverter.duty.service:.20-100%.speed...The.motor.must.have.thermal.
protection.per.NEC.2005..(RTD,.Thermostat,.Thermistor)
.����������������������� Verify.that.the.ambient.temperature.remains.within.the.recommended.operating.range.of.40°.-.135°F.(4°.-.
57°C)..If.the.drive.is.to.operate.below.40°F.(4°C),.provide.enclosure.ambient.space.heating.
.����������������������� All.wiring.must.be.contained.in.metallic.conduit..
Use of PVC or other materials is not acceptable.
.����������������������� Verify.that.control.power.(120.VAC),.communications/analog.wiring,.and.460.VAC.power.are.in.separate.metallic.
conduits.
Содержание Frick 572
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