YOKOGAWA UT55A - Remote (Auxiliary Analog) Input Wiring

17-8
IM 05P01C31-01EN
17.4.3 Remote(AuxiliaryAnalog)InputWiring
 CAUTION
1) Be careful of polarity when wiring inputs. Reversed polarity can damage the UT.
2) Keep the remote (auxiliary analog) input signal line as far away as possible from
the power supply circuit and ground circuit.
3) For TC input (remote input with direct input), use shielded compensating lead
wires for wiring. For RTD input, use shielded wires that have low conductor
resistance and cause no significant dif
ferences in resistance between the three
wires.
4) If there is a risk of external lightning surges, use a lightning arrester etc.
UT55A/UT52A
Remoteinput(E1-terminalarea)
306
305
–
+
+
–
DC voltage
Class D grounding
(grounding resistance of 100 Ω or less)
Shield
RSP
UT55A
Auxiliaryanaloginput(E2-terminalarea) Auxiliaryanaloginput(E4-terminalarea)
312
311
–
+
+
–
DC voltage
Class D grounding
(grounding resistance of 100 Ω or less)
Shield
AIN2
506
505
–
+
+
–
DC voltage
Class D grounding
(grounding resistance of 100 Ω or less)
Shield
AIN4
Use
RSPRemoteInput(E1-terminalarea)
InSingle-loopcontrolorLoopcontrolwithPV-holdfunction,usedforremoteinput.
In Cascade primary-loop control, remote input is used for output tracking input.
In Cascade secondary-loop control, remote input is used for cascade input.
In Cascade control, remote input is usedforLoop-2
PVinput.
In Loop control for backup, remote input is used for output tracking input.
InLoopcontrol
withPVswitchingorLoopcontrolwithPVauto-selector,remote input is
usedforPV
input2.
AIN2AuxiliaryAnalogInput(E2-terminalarea)
InLoopcontrolwithPVauto-selectorfor3inputsor4inputs,auxiliaryanaloginput(E-2
terminalarea)isusedforPVinput3.
17.4 Wiring