Technical information

J-44
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Timers & control relays
Function Current converter Voltage converter Signal converter Frequency converter Signal isolator
Model SC120A SC120V SC100 SC100P SI120
Description of operation
TheSC120ACisasignal
converterincorporating
latestsolidstatetechnology.
Acceptingcurrentsignals
fromconventionalcurrent
transformersandconverting
thesetoastandard
transmissionsignalsuchas
4-20mA(trueRMS)
TheSC120Visasignal
converterincorporatinglatest
solidstatetechnology.It
acceptsvoltagesignals,
convertingthemintostandard
transmissionsignalssuchas
4-20mA(trueRMS)
TheSC100isasignal
converterincorporating
latestsolidstatetechnology.
Acceptinginputsofvoltage,
current,orresistanceand
convertingthesetostandard
transmissionsignalsuchas
0-1/10mA,4-20mA(true
RMS)
TheSC100Pisasignal
convertertingFrequencyto
a conventional transmission
signalsuchas4-20mA.A
24Von-board,unregulated
powersupplyinincorporated
forsupplytoproximityor
othersources.Aschmitt
triggerinputprovidesreliable,
accurateoperationevenwith
slowinputriseandfalltimes.
Frequencylimitedtomin
0-50Hzmax20kHz.
TheSI120isasignalisolator
designedtoeliminate
potentialgroundloop
problemsprevalentin4-20mA
control loops. It can also be
usedinotherapplications
wheregalvanicisolation
isarequirement.Theunit
incorporatestwoisolated24
Vdcpowersuppliesforinput
andoutputloopsallowingit
tobeusedwithmainsand/
orlooppoweredtransmitand
receiveinstrumentswithout
theneedforadditionalpower
supplies.Bothpowersupplies
arecurrentlimitedat30mA.
Isolationisachievedbythe
useofanopto-couplercurrent
mirror circuit.
Standard voltage AC:110,230,400,525Vac50Hz
Galvanic isolation
110,230,400525Vareequippedwithinternaltransformersprovidingeffectivegalvanicseparationoftheelectroniccircuitryfromsupplyvoltage.
(testvolts:2kV)
Input signal options
0-1A
0-5A
otheronregular
0-300Vacasdc
0-600Vacasdc
mV
mA
thermocouple
potentiometer
voltage,namur
NPN/PnP3wireproximity
reedswitch
0-50Hzmin
4-20mA
(Othersavailableon
request)
Output signal options
4-20mA
(Othersavailableon
request)
4-20mA
(Othersavailableon
request)
4-20mA
(Othersavailableon
request)
4-20mA
(Othersavailableon
request)
4-20mA
(Othersavailableon
request)
Accuracy
Linear+/-0.2%
±6VAmax
Consumption
+/-3VA <0.5%FS
Type of duty
Continuous(100%)
Response time +/-0.5sec
Note Ifvoltageandcurrentisavailablecurrentmustbebridgedoutforvoltagetobeavailable
Price 737.00 711.00 POR POR 1043.00
1
3
4
11
9
8
2
10
5
6
7
Supply
+
+
-
-
I out
Input
Volt out
0-300 V
0-600 V
1
3
4
11
9
8
2
10
5
6
7
Supply
+
+
+
-
-
-
I out
Input
Volt out
1
3
4
11
9
8
2
10
5
6
7
Supply
+
+
-
-
I out
Volt out
+15V
Sensor
1
3
4
11
9
8
2
10
5
6
7
Supply
+
+
+
-
-
-
Common
I out
Input
Volt out
+24Vout
Si120
1
3
4
11
9
8
2
10
5
6
7
Supply
+
+
-
-
I out
Input
Volt out
0-1 A
0-5 A
Monitoringdevices