RXB PLUS ROTARY SCREW COMPRESSOR UNITS
OPERATION
070.101-IOM (JAN 13)
Page 26
AT 167°F.
The.microprocessor.instructs.the.compressor.motor.to.shut.
down.and.displays.a.
CUTOUT
.indication.on.the.Operating.
display...It.stores.the.operating.conditions.at.the.moment.of.
cutout.in.the.Freeze.display..Informa.tion.regarding.the.cutout.
will.also.be.retained.by.the.Annun.ciator.and.the.Shutdown.
Record.displays.
NOTE: If the operator makes an error by at tempting to
start the compressor under condi tions outside safe
normal operating conditions, the micropro cessor will
prevent start-up and ad vise the operator of the fault.
MULTIPLE COMPRESSOR SEQUENCING
FOR RXB COMPRESSOR UNITS WITH
MICROPROCESSOR CONTROLS
A
.-.The.standard.microprocessor.panel.includes:
1.
..Remote.Run.Input
2.
..Remote.Load.Input
3.
..Remote.Unload.Input
The.remote.run.input.is.only.recognized.when.the.remote.run.
mode.has.been.selected.by.pressing.the.
[REMOTE START]
.
key.on.the.front.panel.of.the.micropro.cessor.
The.remote.load.and.unload.inputs.can.only.be.recog.nized.
when.the.
[REMOTE]
.key.in.the.slide.valve.column.on.the.
front.panel.of.the.microprocessor.has.been.pressed.
B
.-.If.master.sequencing.between.multiple.compressors.in.
parallel.on.a.common.suction.is.desired..This.output.data.
will.permit.the.compres.sor.microproc.essor.to.be.interfaced.
with.a.master.sequence.controller...See.electri.cal.diagram.
for.details.
C
.-.A.master.sequence.controller.must.be.installed.to.pro-
vide.the.signals.to.remote.start.and.stop.the.compres.sors.
and. remote. load. and. unload. the. compres.sors. based. on.
the.common.suction.pressure.or.other.parameter.and.the.
com.pressor. status. based. on. the. optional. microproces.sor.
output. data. feedback..The. customer. may. supply. his. own.
master.sequencer.panel.(usually.a.programmable.control-
ler).or.Frick,.can.supply.this.sequencer.if.desired.(contact.
Frick..for.pricing).
SUGGESTED PROGRAMMABLE
CONTROLLER PROGRAM TO DECODE
MICROPROCESSOR OUTPUT DATA CODES
OUTPUT NO.
16
15
14
13
HEX
CODES
TERMINAL NO.
31
32
33
34
MNEMONIC
BIT
3
BIT
2
BIT
1
BIT
0
MEANING
OUTPUT.DATA.CODE
Compressor.Off
0
0
0
0
0
Running
Slide
Valve
Position
10%
0
0
0
1
1
20%
0
0
1
0
2
30%
0
0
1
1
3
40%
0
1
0
0
4
50%
0
1
0
1
5
60%
0
1
1
0
6
70%
0
1
1
1
7
80%
1
0
0
0
8
90%
1
0
0
1
9
100%
1
0
1
0
A
Running.with.MLC.Inhibit
1
0
1
1
B
Lockout.on.Recycle.Delay
1
1
0
0
C
Cutout
1
1
0
1
D
Undefined
1
1
1
0
E
Undefined
1
1
1
1
F
Содержание Frick RXB Plus 12
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