Valcom VPRHS-U User manual

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No.Q-0600-0057-05
VPRHS-U TYPE
VPRVS-U TYPE
Operation Manual
1. General Specifications
2. Placement of Internal Adjusting Controls and Operation Keys
3. Terminal Connections
4. Particularly Important Precautions
5. Zero-shifting Function
6. Optional Peak-holding Function
7. Optional Auto-zeroing Function
8. Maintenance, Inspection, and Adjustment
9. I/O Schematics
10. Appearance and Dimensions
VALCOM Co., Ltd.
3-5-22, Minowa, Toyonaka-city, Osaka, 560-0035
TEL.[phone]
FAX.[phone]
R
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1
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No.Q-0600-0057-05
For safe use
Thoroughly read the precautions described below for correct use. Improper
use will cause failures or accidents such as fire and shock hazards.
To avoid such accidents, be sure to observe the precautions. Save this
manual in an appropriate place for future reference even after you read it.
"WARNING" and "CAUTION" are used depending on the severity of
accidents caused by improper handling.
Never splash water or oil onto the sensor.
Neglecting this will cause fire, shock hazards, or failures.
Never damage or forcedly bend the power cord, sensor cable, I/O
lines.
Neglecting this will cause short circuits, resulting in ignition.
Be sure to apply the specified power-supply voltage only.
Applying any voltage other than the specified power-supply voltage will
cause fire, shock hazards, or failures.
Never modify the sensor or its accessories.
Neglecting this will cause fire, shock hazards, or failures.
Never touch any terminal or wire on the rear panel with wet hand.
Neglecting this will cause fire, shock hazards, or failures.
Be sure to use for the specified input only.
Neglecting this will cause fire, shock hazards, or failures.
Securely carry out wiring.
Any poor contact will cause fire, shock hazards, or failures.
Explanation of pictograms
" " indicates a description to which attention must be given.
" " indicates a prohibited action.
" " indicates an action which must be done or instructions.
CAUTION
This is used to indicate a potentially hazardous situation which,
if not avoided, could result in personal injury or property
damage.
WARNING
This is used to indicate a potentially hazardous situation which,
if not avoided, will result in death or serious personal injury.
WARNING
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No.Q-0600-0057-05
When installing the sensor, avoid a humid or dusty place or a
place subjected to steam or greasy fumes.
Neglecting this may cause fire or shock hazards.
Securely install the sensor.
Loose installation will cause the sensor to drop, resulting in personal
injury.
Be sure to confirm that power is turned OFF before relocating the
sensor or changing the wiring.
Neglecting this may cause shock hazards or failures.
When one of abnormal conditions shown below is detected,
turn OFF the power, and notify your local dealer or VALCOM of
it, or return the amplifier for repair.
○ Smoking occurs.
○ There is an unusual smell.
○ Foreign matter such as water and oil entered the inside of the
sensor.
○ The sensor does not operate normally.
CAUTION
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3
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No.Q-0600-0057-05
1. General Specifications
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4
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No.Q-0600-0057-05
2.
Placement of Internal Adjusting Controls and Operation Keys
3. Terminal Connections
1 Sensor connection A (+EXCITATION) 10 Peak-holding terminal
(activated when short-circuited together with the terminal No. 12)
2 Sensor connection B (-INPUT) 11 Auto-zeroing terminal (activated when short-circuited together with the terminal No. 12)
3 Sensor connection C (-EXCITATION) 12 Common terminal for control input
4 Sensor connection D (+INPUT) 13 SET1 output (S: N.O. SO: Unused)
5 Sensor connection E (Shield)/Analog output (-) 14 SET1 output (S: N.C. SO: N.O.)
6 Analog output (+) 15 SET1 output (COM.)
7
Grounding terminal (F.G.)
16
SET2 output (S: N.O. SO: Unused)
8
Power-supply terminal (+ for DC)
17
SET2 output (S: N.C. SO: N.O.)
9 Power-supply terminal (- for DC) 18 SET2 output (COM.)
Caution: Do not use any unused terminal.
Upper
terminals
Upper terminals
Lower terminals
“VPRVS” Series
For relay output (Types: 1S, 2S)
For open-collector output (Types: 1SO, 2SO)
Lower
terminals
Lower
terminals
“VPRHS” Series
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5
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No.Q-0600-0057-05
Caution: The sensor power supply (EXCITATION) is the power supply for a sensor with VALCOM
built-in amplifier.
(If the power supply specification for the model (*2) specifies an AC power supply, the standard
specification is 12 VDC, 25 mA.)
(If the power supply specification for the model (*2) specifies a 24VDC power supply, the standard
specification is 15 VDC, 40 mA.) .
Caution: Follow the instructions described below to avoid malfunction of the unit due to noise
caused by surge or induction .
* Be sure to use a shielded cable as the sensor cable. When
extending the sensor cable, be sure to use a shielded cable.
* Be sure to connect the shielded wire to the terminal No. 5 with the
shortest possible leads A through D exposed from the shield.
* Avoid connecting the sensor cable in parallel with a power line, etc.
or in the same conduit.
* Securely ground the grounding terminal F.G. (frame ground).
4. Particularly Important Precautions
* Be sure to use the amplifier and sensor bearing the same serial
number.
(Otherwise, correct readings cannot be obtained.)
* Be sure to confirm that the power-supply voltage is correct, and
perform wiring correctly.
* Do not touch the diaphragm with a screwdriver, etc.
inserted through the pressure introduction port of the
sensor.
* When installing the sensor, tighten it with an appropriate torque so
that no leakage is caused.
(*Applying an excessive torque can cause a permanent set,
preventing the sensor from showing its guaranteed accuracy.
(The reading is not zeroed.))
* Do not make any modification or touch any control or switch by
opening the case unless required.
(*If you touch a control coated with red paint, preventing the
guaranteed accuracy from being obtained, we are not liable for
the failure.)
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No.Q-0600-0057-05
* When you must perform calibration, follow the procedure
described in "8. Maintenance, Inspection and Adjustment."
(*While performing calibration, do not touch any control which
does not need adjustment.)
* When a measurable limit (FS. ± approx. 2%) is exceeded, the
display starts flashing.
(The reading remains unchanged.)
When zero-shifting has been performed, the zero-shifting amount
is added to or subtracted from the original measurable limits.
5. Zero-shifting Function
Zero adjustment can be performed by operating the
zero-shifting key hidden behind the front panel.
Perform zero adjustment when, for example, the zero point
for measurement is deviated.
* Remove the outer frame of the front panel, and then take
the front panel out by hooking the notch with a screwdriver,
etc.
* Place the sensor in a state where the reading should be
zero.
* Pressing the zero-shifting key for at least 2 seconds, the
reading is forcefully zeroed. (Zero shifting)
* Pressing the zero-shifting key for 5 seconds or longer,
zero shifting is canceled.
* Do not operate any switch other than the zero-shifting key.
* When the difference between the readings before and after
zero shifting becomes ± 2%FS or more, a warning
message " " is temporarily shown.
(Z e ro s h if t in g is p e rf o r m e d eve n if th e w a rn in g m e ssa g e " "
is s h ow n .)
(I f th e w a r n in g m e ss a g e " " is s h o wn , it m a y b e im p o ss ib le
to m e a s u re FS .)
(W h e n F S n e e d s to b e m e a s u re d , ca n c e l z e r o s h if tin g , a n d m a k e
a d ju stm e n t w it h th e r e a d in g ze r o - a d j u st in g c o n t r o l.)
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No.Q-0600-0057-05
6. Optional Peak-holding Function
* Short-circuiting the terminal No. 10 (P) and the terminal No. 12
(COM.) activates the peak-holding function.
* When the terminals are opened, the unit returns to normal
measurement operation.
＊ P (Peak holding)
7. Optional Auto-zeroing Function
* Short-circuiting the terminal No. 11 (Z) and the terminal No. 12
(COM.) automatically zeros the current reading.
* When the terminals are opened, the unit returns to normal
measurement operation
＊ Z (Auto-zeroing)
Peak holding
Actual input
The current reading is set to zero
Actual input
Reading
Zero point
Auto-zeroing command
ON
ON
Reading
Peak command
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8
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No.Q-0600-0057-05
8. Maintenance, Inspection, and Adjustment
It is recommended to perform periodical inspection at least once a
year although the appropriate inspection interval depends on the
operating environment.
In addition, check the zero point every 3 months, and perform zero
adjustment when necessary before use.
Normally, this unit requires only zero adjustment for maintaining
high accuracy. When this unit needs recalibration, send it to
VALCOM or perform calibration by following the procedure below.
1) Prepare a calibrator with guaranteed accuracy.
2) If the input must correspond to the "0" indication, make sure that
the indicated value is "0".
3) Make sure that the reading falls within the limits when the rated
pressure is applied and when 1/2 of the rated pressure is
applied.
4) If the reading is out of the limits, perform calibration by following
the procedure below.
1. Remove the outer frame of the front panel, and then take the
front panel out by hooking the notch with a screwdriver, etc.
(When the front panel is secured with the panel mounting
bracket, loosen it first.)
2. If the input must correspond to the "0" indication, turn the
indication zero adjustment trimmer to set the indicated value to
"0".
(For absolute pressure, zero the reading when 20Pa ･ abs or
lower is applied.)
3. While applying the rated pressure, adjust the reading by
turning the reading span-adjusting control.
4. Perform the above-mentioned calibration again for
confirmation, and then check the non-linearity, etc. under 1/2
of the rated pressure.
5. In addition, adjust the analog output by following the
above-mentioned procedure.
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9
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No.Q-0600-0057-05
9. I/O Schematics
Analog input schematic (A2, A3, A4, and A5)
Control input schematic (P and Z)
Analog output schematic (A1, A2, A4, and A5)
To internal CPU board
24V
Control input
10K
COM
0.1uF
DG
Output (+)
AG
100-1/4W
Internal D/A output
10K
0.1uF
Output (-)
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10
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No.Q-0600-0057-05
10. Dimensional drawing
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11
－
“VPRVS” Series
“VPRHS” Series
ＤＩＧＩＣ
48
9 9 9
1
9 9 9
96
2
1 1
5.5 104
89.5
41.517.5
127
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18
ＤＩＧＩＣ
9 9 9
48
SET1
1
96
9 9 9
SET2
2
5.5 104
89.5
8
7
6
5
4
3
2
17
16
15
14
13
12
11
1 10
18 9
41.517.5
127
Unit: mm

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