YOKOGAWA UT130, Technical Information

Page: 52 / 86

5-4
<Toc> <Ind>
TI 05C01E02-01E 1st Edition : Oct. 31, 2001-00
5.6 Using Two Target Setpoints
•
This function is available for
UT150/UT152/UT155 with the "/EX"
option.
•
SP is switched using the external
contact inputs. The external contact
input terminals for SP switching are
different according to the parameter
"DIS" setting.
Refer to "8.3 Wiring" on Page 8-7.
•
Set "0" or "2" for the setup parameter
"DIS" to switch SP.
•
Set the ramp rate to prevent the target setpoint (SP) from changing suddenly.
Refer to "5.5 Setting Target Setpoint Ramp Rate (Rate-of-Change)" for ramp rate
setting.
Minimum value (SPL) to
maximum value (SPH) of
target setpoint range
(
°
C or
°
F )
SP1
SP2
Parameter Range
0:Timer starts/stops, SP switching
1:Timer starts/stops,
RUN/STOP switching
2: RUN/STOP switching, SP switching
DIS
Temperature
Time
SP2
SP1
SP switching
SP1 to SP2
(SP2 when DI = ON)
SP switching
SP2 to SP1
(SP1 when DI = OFF)
5.7 Retransmission of Measured Input Value in
Current Signal
•
This function is available for
UT150/UT152/UT155 with the "/RET"
option.
•
The retransmission output range is
factory-set to between the maximum and
minimum values of measured input range
(scale).
•
The retransmission output range is
changeable. The retransmission output
range is set using the parameters "RTL"
(minimum value of retransmission output)
and "RTH" (maximum value of
retransmission output).
<Temperature input>
Within measured input range
<Voltage input>
RTL + 1digit to maximum value
of measured input scale (RH)
Minimum value of measured
input scale (RL) to RTH —1digit,
however, RTL < RTH
RTL
RTH
Parameter Range
Retransmission output
Measured input range (scale)
20
mA
4
Minimum value of
retransmission scale Maximum value of
retransmission scale
Retransmission output
4 to 20mA DC
Measured
input value
Recorder
Minimum value Maximum value
Heater
Furnace
Thermocouple