PR electronics 2255, Руководство пользователя, Страница: 21 / 63

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ELECTRICaL SPECIFICaTIONS
Specifications range:
-20°C.to.+60°C
Common specifications:
Supply.voltage............................................ . 19.2...28.8.VDC
Internal.consumption.................................. . 2.4.W
Isolation,.test./.operation............................ . 1400.VAC./.150.VAC
Warm-up.time.............................................. . 1.min.
Signal./.noise.ratio...................................... . Min..60.dB.
Signal.dynamics,.output............................. . 16.bit
Response.time.(programmable).................. . 60.ms.to.999.s.+.period.time
.
Calibration.temperature.............................. . 20...28°C
Temperature.coeffici.ent............................... . <.±0.01%.of.span./.°C
Linearity.error.............................................. .
≤
.±0.1%.of.span
Effect.of.supply.voltage.change................. . <.0.005%.of.span./.VDC
auxiliary voltages:
NAMUR.supply............................................ . 8.VDC.±0.5.VDC./.8.mA
S0.supply.................................................... . 15.VDC./.25.mA
Special.(acc..to.order)................................. . 5...15.VDC./.30.mA
.
Immunity.influence...................................... . <.±0.5%
.
Air.humidity................................................. . <.95%.RH.(non-cond.)
Dimensions.(HxWxD)................................... . 80.5.x.35.5.x.84.5.mm
Protection.degree........................................ . IP50
Weight......................................................... . 125.g
Input:
General:
Measurement.range.................................... . 0...20.kHz
Min..measurement.range............................ . 0.001.Hz
Low.cut.off.................................................. . 0.001.Hz
Max..offset.................................................. . 90%.of.selec..max..value
Min..pulse.width.......................................... . 25.µs
S0 Supply:
15.VDC..Imax..25.mA..Imin..(800.
Ω
.load).10.mA.
Special supply:
As.option.special.voltage.supplies.within.the.range.5...15.VDC./.30.mA.
OuTPuT(S):
Standard current output.(pin.3).programmable.within.the.range.0...20.mA.
Min..span.5.mA..Max..span.20.mA.
Max..offset.of.50%.of.the.max..value.
Current.limit:.Max..26.mA.
Standard voltage output.(pin.2).is.obtained.by.leading.the.current.signal.through.
an.internal.shunt.resistor.
With. internal. dipswitches. a. 50.
Ω . or. a. 500. Ω . shunt. resistor. is. selected,. which.
results.in.a.voltage.output.of.0...250.mV.and.0./.0.2...1.V.(50. Ω ).and.0...2.5.V.and.
0./.2...10.V.(500. Ω ).
With. a. special. internal. shunt. resistor,. units. with. other. output. voltages. can. be.
delivered.(max..12.VDC).
Current.and.voltage.signals.are.referring.to.the.supply.gnd..but.if.both.signals.are.
used.simultaneously,.only.the.voltage.signal.has.gnd..as.reference.
NPN pulse output (option). for. relay,. electromechanical. counter. or. equivalent.
load..The.output.is.current-limited.to.130.mA.with.a.PTC.resistor.
The relay output.(option).with.change-over.contact..300.VA,.max..150.VRMS,.2.A..
Max..DC.load.at.24.VDC.is.1.A.
STaTuS INDICaTION:
2255.is.equipped.with.3.status.indicators.in.the.front.
f in:.
Indicates.active.input.(inactive.by.the.NPN.input).
. Input.frequencies.>.50.Hz.are.shown.by.fixed.light.
Dig. out: Indicates.active.output.
Error:.
Indicates.sensor.error.by.NAMUR.input.