Yokogawa JUXTA VJQ7 - Manual (Page 6)

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All Rights Reserved. Copyright © 1999, Yokogawa M&C Corporation IM 77J01Q17-01E
10.LIST OF PARAMETERS
No. Item Display Remark No. Item Display Remark
01 Model MODEL
02 Tag no. TAG NO
03 Self-check result SELF CHK
Display items
A Dispay1 DISPLAY1 B Dsplay2 DISPLAY2
A01 Input value INPUT1 B01 Input value INPUT1
A02 Output value OUTPUT B02 Output value OUTPUT
A07 Alarm-1 status ALM1 STATUS B07 Alarm-1 status ALM1 STATUS
A08 Alarm-2 status ALM2 STATUS B08 Alarm-2 status ALM2 STATUS
A54 Status STATUS *1 B60 Self-check result SELF CHK
A56 Rev. no REV NO
A58 Menu rev. MENU REV *1: The Status is displayed for service personnel to see history records.
A60 Self-check result SELF CHK
Setting items
D Setting (I/O) SET(I/O) E Setting (alarm output) SET(ALM)
D01 Tag no. 1 TAG NO.1 E03 Alarm-1 setting SET POINT1
D02 Tag no. 2 TAG NO.2 E04 Alarm-2 setting SET POINT2
D03 Comment 1 COMMENT1 E05 Direction of alarm-1 action ALM1 ACTION
D04 Comment 2 COMMENT2 E06 Direction of alarm-2 action ALM2 ACTION
D10 Output range unit UNIT E09 Alarm-1 hysteresis HYSTERESIS1
D14 Low output cut point LOW CUT E10 Alarm-2 hysteresis HYSTERESIS2
D16 Input type INP TYPE E11 Alarm-1 ON delay setting ON DELAY1
D17 Selection of input hard range SELECT RANGE E12 Alarm-2 ON delay setting ON DELAY2
D18 Input resistance IN RESIST E13 Alarm-1 OFF delay setting OFF DELAY1
D22 Input low range INPUT1 L_RNG E14 Alarm-2 OFF delay setting OFF DELAY2
D23 Input high range INPUT1 H_RNG E15 Direction of alarm-1 relay action RL1 ACTION
D24 Output low range OUT L_RNG E16 Direction of alarm-2 relay action RL2 ACTION
D25 Output high range OUT H_RNG E60 Self-check result SELF CHK
D46 Pulse width type PULSE TYPE F Setting (communication) SET(COM)
D47 Pulse width time PULSE WIDTH F01 Communication protocol PROTOCOL
D60 Self-check result SELF CHK F02 Address ADDRESS
F03 Baud rate BAUD RATE
F04 Parity PARITY
There are items not displayed depending on what output-2 is specified. F05 Data length DATA LEN
F06 Stop bit STOP BIT
F07 Decimal point position of input INPUT DEC PT
F60 Self-check result SELF CHK
Adjusting items Test items
P Adjustment ADJUST Q Test TEST
P02 Zero adjustment of input-1 ZERO ADJ Q04 Forced output (alarm) ALM1 TEST
P03 Span adjustment of input-1 SPAN ADJ1 Q05 Forced output (alarm) ALM2 TEST
P17 Adjustment of external input resistance RESISTOR ADJ Q08 Forced output OUT TEST
P60 Self-check result SELF CHK Q60 Self-check result SELF CHK
11.MAINTENANCE
The product starts running immediately when the power is turned on;
however, it needs 10 to 15 minutes of warm-up before it meets the
specified performance.
For cleaning the instrument, use a soft and dry cloth.
11.1 Calibration Apparatus
● Voltage/current generator (Yokogawa 7651 or the equiva-
lent): 1
● A counter(Yokogawa TC100 or the equivalent) or oscillo-
scope (Yokogawa DL1540 or the equivalent): 1
● A resistor (1k ⍀, 1.6 k⍀): 1 each
● 6V battery: 1
11.2 Calibration Procedure
Connect the instruments as shown in Fig.11.1. First adjust the out-
put-1 signal and then the output-2 signal.
Produce input signals equivalent to 0, 25, 50, 75 and 100% of the in-
put span to the converter from the voltage and current generator.
Then, check that the converter's output signal shows the outputs cor-
responding to 0, 25, 50, 75, and 100% of the input span within the
rated accuracy range. Take the same calibration procedure for the
output-2, and confirm that the frequency of the output 2 is the same
as that of the output 1.
When using a oscilloscope, the wave shaping of output pulse can be
confirmed.
If the output signal is out of the rated accuracy range, adjust the out-
put signal level using the Handy Terminal (JHT200). For adjust-
ment, refer to Instruction Manual for VJ77 Parameters Setting Tools
(IM 77J01J77-01) or for Handy Terminal (IM JF82-01).
11 10 8
L+ N– GND
5
2
1.6k
Ω
1k
Ω
+
–
9
7
1.6k
Ω
1k
Ω
+
–
10 11
3 2 1
4 5 6
7 8 9
Input signal
3
1
+
–
R
R:100 Ω
Externally connected for current input
Shunt resistor
(Externally connected for current input)
Voltage and
current
Generator
Calibration for output-1
Calibration for output-2
6V
Battery
6V
Battery
Counter or
Osilloscope
Counter or
Osilloscope
Power supply
Fig. 11.1