YOKOGAWA UT55A - Triac Output Specifications; Position Proportional Output Specifications; Retransmission Output Specifications; 15 V DC Loop Power Supply Specifications

19-5
IM 05P01C31-01EN
Specifications
19
19.1.5 TriacOutputSpecifications(forDetailedmodel)
• Contacttypeandnumberofoutput:zerocross;1point
 Loadvoltage:75to250VAC
 Allowableloadcurrent:0.8Awhentheambienttemperatureis20°C,0.3Awhen
theambienttemperatureis50°C.
• Minimum load current: 20 mA (*)
*: Unusable for a small load of 10 mA or less.
*: If there is a risk of surge current, connect a current-limiting reactor, a current-
limiting fuse or a breaker in series to the load power supply.
• Use: Time proportional output, Alarm output
•
Timeresolutionofcontroloutput:1/commercialfrequency(s)or0.1%ofoutput,
whichever is larger.
19.1.6 PositionProportionalOutputSpecifications
• Position signal input:
 Slideresistance:100Ωto2.5kΩoftotalresistance
100%sideandslideline:withdisconnectiondetection
0%side:withoutdisconnectiondetection
Current input: 4 to 20 mA
(with disconnection detection)
• Sampling period: 50 ms
• Measurementresolution:
0.1%ofinputspan
• Position proportional relay output:
 UT55A:contactpoint1a;2points,250VAC,3Aor30VDC,3A(resistanceload)
 UT52A:contactpoint1a;2points,240VAC,3Aor30VDC,3A(resistanceload)
Note: Cannot be used for a small load of 10 mA or less.
19.1.7 RetransmissionOutputSpecifications
• Numberofoutputs:Retransmissionoutput;1,sharedwith15VDClooppowersupply
• Currentoutput:4to20mADCor0to20mADC/loadresistanceof600Ωorless
• Currentoutputaccuracy:±0.1%ofspan(±5%ofspanfor1mAorless.)
 Theaccuracyisthatinthestandardoperatingconditions:23±2°C,55±10%RH,and
powerfrequencyat50/60Hz.
19.1.8 15VDCLoopPowerSupplySpecifications
(Shared with retransmission output)
• Powersupply:14.5to18.0VDC
• Maximum power supply: About 21 mA (with short-circuit current limiting circuit)
19.1.9 ContactInputSpecifications
• Number of inputs: See the table of Model and Suffix Codes.
• Input type: No-voltage contact input or transistor contact input
• Inputcontactrating:12VDC,10mAormore
Use a contact of a minimum on-current of 1 mA or more
• ON/OFF detection:
No-voltage contact input:
 Contactresistanceof1kΩorlessisdeterminedas“ON”andcontactresistance
of50kΩormoreas“OFF.”
Transistor contact input:
 Inputvoltageof2Vorlessisdeterminedas“ON”andleakagecurrentmustnot
exceed 100 µA when “OFF.”
• Minimum status detection hold time: Control period +50 ms
• Use: SP switch, operation mode switch, and event input
19.1HardwareSpecifications