YOKOGAWA Juxta VJU7, User Manual

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4. DESCRIPTION OF FRONT PANEL AND
CONNECTION OF SETTING OOLS
4.1 Front Panel
The communications connector on the front panel is used for
setting up parameters using a PC (VJ77 PC-based Parameters
Setting Tool) or the Handy Terminal (JHT200). The alarm indicator
lamps for alarm 1 and alarm 2 light up if an alarm occurs (those
LEDs are provided only when the output-2 is specified for alarm
output (the output-2 suffix code is T).)
Alarm indicator lamp
(for alarm 1)
Communication connector
Alarm indicator lamp
(for alarm 2)
4.2 Connector for Communication
Connect the modular jack conversion adapter to the JUXTA
communication cable with 5-pin connector and then connect this
adapter to the communication connector of JUXTA.
< How to connect with the setting tool>
JUXTA communication
cable with 5-pin
connector
Modular jack
conversion
adapter
Dedicated adapter
Dedicated cable
<How to connect with the setting tool>
JUXTA
VJ Series
PC with the
VJ77 installed
JHT200
Handy Terminal
• Use the VJ77 of version R2.02.01 or later.
• The modular jack conversion adapter does not come with the
JHT200 Handy Terminal. It is sold separately.
5. SETTING PARAMETERS
Set the parameters using a PC (VJ77 PC-based Parameters
Setting Tool) or the Handy Terminal (JHT200). Refer to “7. LIST
OF PARAMETERS” in this manual and the user’s manual for
VJ77 PC-based Parameters Setting Tool (IM 77J01J77-01E) or
JHT200 Handy Terminal (IM 77J50H01-01EN).
CAUTION
For the input sensor type, input type and temperature
unit, the default values of the input range, alarm setpoints
and others are pre-defined according to the values to be
selected. Set the parameters as follows.
1. Settings related to inputs: Set the parameters in order
starting with (1).
(1) Input sensor type
(2) Input type for temperature input
(3) Temperature unit for temperature input
(4) Input range
2. Before setting the parameters related to alarm output
and making the adjustments such as wiring resistance
correction and output correction, set the parameters
described in 1 above.
If setting the parameters (1) to (3) in 1 above after set-
ting the parameters related to alarm output or making
the adjustment, the setpoint will be changed or the
adjustment will be reset to the default.
5.1 Settings Related to Input and Output
5.1.1 Input Sensor Type and Input Type
Select the input sensor type in [D07: SENSOR TYPE] . Select
TC for thermocouple input, mV for mV input and RTD for
RTD input. When you have selected TC in D07, select the
TC type to use in [D08: TC TYPE] . When you have selected
RTD in D07, select the RTD type to use in [D09: RTD TYPE] .
Furthermore, for thermocouple or RTD input, select the
temperature unit in
[D21: UNIT]
.
5.1.2 Input Range
Set the 0% value of input range in
[D24: INPUT1 L_RNG]
and the 100% value of input range in [D25: INPUT1 H_RNG]
numerically within the following specified range.
Input type (TC) Measurable range (°C)
JIS C 1602, IEC 60584-1 (ITS-90) TYPE K -270 to 1372
JIS C 1602, IEC 60584-1 (ITS-90) TYPE T -270 to 400
JIS C 1602, IEC 60584-1 (ITS-90) TYPE E -270 to 1000
JIS C 1602, IEC 60584-1 (ITS-90) TYPE J -210 to 1200
JIS C 1602, IEC 60584-1 (ITS-90) TYPE R -50 to 1768
JIS C 1602, IEC 60584-1 (ITS-90) TYPE S -50 to 1768
JIS C 1602, IEC 60584-1 (ITS-90) TYPE B 0 to 1820
JIS C 1602, IEC 60584-1 (ITS-90) TYPE N -270 to 1300
Type W3(Note 1) 0 to 2300
Type W5(Note 2) 0 to 2300
Input type (RTD) Measurable range (°C)
JIS C 1604, IEC 60751(ITS-90)PT100 -200 to 850
JIS C 1604:1989, DIN(IPTS-68) Pt100 -200 to 660
JIS C 1604:1989, JPt100 -200 to 510
JIS C 1604:1981, Pt50 -200 to 649
Input type (mV) Measurable range (mV)
mV -10 ～ 100
Note 1: W3 is the abbreviation of W97Re3-W75Re25 (tungsten97 % rhenium 3
% - tungsten75 % rhenium25 %) ASTM E988 Standard
Note 2: W5 is the abbreviation of W95Re5-W74Re26 (tungsten95 % rhenium 5
% - tungsten74 % rhenium 26 %) ASTM E988 Standard
5.1.3 Software Filter
Set the software filter in [D57: S/W FILTER] .
OFF, LOW, MIDDLE, HIGH (default value: OFF)
When LOW, MIDDLE, or HIGH is selected, a first-order filter
equivalent to 100 ms, 300 ms, or 1 s is inserted in the input.
5.1.4 Setting Burnout Action
Set the burnout action in [D39:BURN OUT] . Set “OFF”, “UP”,
or “DOWN.”
CAUTION
• Changing the burnout action direction resets the input
adjusted value and the wiring resistance corrected
value.
• Changing the input range resets the input adjusted
value.
• Execute the wiring resistance correction when the
burnout action direction or input wiring is changed.
5.1.5 Direction of Output Action
When output 1 and output 2 are analog outputs, the outputs
can be reversed. Set the direction of output action in [D50:
OUT1 DR] (output 1) and in [D51: OUT2 DR] (output 2).
Select REVERSE for reverse action and DIRECT for direct
action.
5.1.6 Wiring Resistance Correction
When an error occurs due to the influence of the input wiring
resistance, the input can be corrected. Apply a stable input as
shown below and select EXECUTE in
[P01: WIRING R]
. The
correction is also required when the direction of burnout action
is changed from UP (DOWN) to DOWN (UP) or the wiring for
input is changed.
VJ77
or
JHT200
Voltage
generator
mV Input
VJU7
Two signal lines are connected to
the same terminal of one side.
RTD Input
VJ77
or
JHT200
VJU7
Short-circuit at the cable end.
Thermocouple Input
VJU7
VJ77
or
JHT200
Short-circuit at the cable end.
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IM 77J01U07-01E 10th Edition