CAUTION
●
Do not use output-2 for the isolated single-output
type.
●
The power line and input/output signal lines should
be installed away from noise-generating sources.
Other wise accuracy cannot be guaranteed.
●
Make sure to earth ground the ground terminal
through minimum resistance. The length and
thickness of the grounding cable should be as
short and thick as possible. Directly connect the
lead from the ground terminal (terminal no. 8) of
the product to the ground. Do not carry out daisy-
chained inter-ground terminal wiring.
●
The product is sensitive to static electricity;
exercise care in operating it. Before you operate
the product, touch a nearby metal part to discharge
static electricity.
●
If the ambient temperature is 50 °C or more, please
use the cable that the rated temperature is 70 °C or
more.
4. RJC Sensor
CAUTION
The product works normally when the RJC sensor
“A1167HT” (see the figures below) is connected to the
socket. If another RJC sensor is connected, it does not
work normally. Make sure that the correct RJC sensor
is connected referring to the figures below.
The RJC sensor for the product
(For the VJT6 with style of 3.00
or higher)
The RJC sensor for the VJT6 with
former style
“Not available for the VJT6 with
style of 3.00 or higher”
Part number: A1167HT
Part number: E9786WA
The style of VJT6 is indicated on the nameplate attached to
the side face of the main unit.
5. 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.
5.1 Calibration Apparatus
• Calibrator (YOKOGAWA Meters & Instruments‘ CA150 or
equivalent): 1
• Temperature sensor (Yokogawa Meters & Instruments‘
B9108WA or equivalent): 1
• Digital multimater (YOKOGAWA DM7560 or equivalent): 1
•
Precision resistor of 250 Ω ± 0.01%, 1 W
5.2 Calibration Procedure
1. Connect the instruments as shown below. First adjust the
output-1 signal and then the output-2 signal.
10
11
3 2 1
4
5
6
7
8
9
11
10
8
Temperature sensor (B9108WA)
1
3
–
+
2
5
R
-
+
7
9
R
Calibrator
R: 250
Ω
precision resistor
for current output
Power supply
Output-2
Input
Output-1
L+
N- GND
Digital
multimater
-
+
Digital
multimater
2. Use the calibrator and apply input signals equivalent to 0, 25,
50, 75, and 100% of the input span to the product.
3. Check to see the corresponding output voltages are 0, 25, 50,
75, and 100% respectively and within the specified accuracy
rating. “R” is used for current output.
• If the output signals are out of the accuracy rating range,
adjust the output signal level using the zero and span
adjustment volumes on front face of the product.
Zero-adjustment volume
Output-1
Span-adjustment volume
Zero-adjustment volume
Output-2
Span-adjustment volume
3
IM 77J01T06-01E
11th Edition