Yokogawa JUXTA VJQ7 - Manual (Page 3)

3
All Rights Reserved. Copyright © 1999, Yokogawa M&C Corporation IM 77J01Q17-01E 3rd Edition Mar.31,1997-00
IMPORTANT
● If this instrument is used in a manner not sepecified in
this manual, the protection provided by this instrument
may be impaired.
● If the product is operated by a power supply exceeding the
specifications, the product may become extremely hot
and, as a result, damaged. To prevent this, ensure the
following before turning on the power.
(a)
The voltage of the supplied power and the in-
put signal level meet the specifications of the prod-
uct.
(b) External wires are connected to the correct ter-
minals (refer to Chapter 5).
● Do not operate the product in the presence of flammable
or explosive gases or vapors. To do so is highly danger-
ous.
● 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.
7. DESCRIPTION OF FRONT PANEL
AND CONNECTION OF SETTING
TOOLS
7.1 Front Panel
The communications connector in the front panel is used for set-
ting up parameters through a PC (VJ77 PC-based Parameters Set-
ting Tool) or the Handy Terminal. The ALM1 and ALM2 LEDs
light up if an alarm occus (those LEDs are provided only when the
output-2 is specified for alarm output.)
ALM 1
ALM 2
Alarm output-1 LED
(lights up if an alarm occurs)
Communications connector
Alarm output-2 LED
(lights up if an alarm occurs)
* The LEDs are provided only when output-2
is specified for alarm output.
Fig. 7.1 Front Panel
7.2 Connecting the Setting Tools
Connect the modular jack-to-connector adapter (E9786WH) to the
JUXTA communication cable with 5-pin connector (F9182EE)
and then connect this adapter to the communication connector of
JUXTA.
JHT200
Handy Terminal
JUXTA communication cable with
5-pin connectors (F9182EE)
[Provided with VJ77, JHT200]
Modular jack conversion
adapter (E9786WH)
[Provided with VJ77]
Dedicated adapter (E9789HA)
[Provided with VJ77]
Dedicated cable (E9786WK)
[Provided with VJ77]
PC
Fig. 7.2 Connecting the Setting Tools
8. SETTING PARAMETERS
Set the parameters using a PC (VJ77 PC-based Parameters Setting
Tool) or the Handy Terminal. Refer to the list of parameters in this
manual and the Instruction Manual for Handy Terminal (IM JF81-
02E) and VJ77 PC-based Parameters Setting Tool (IM 77J01J77-
01E).
8.1 Settings Related to Inputs and Outputs
8.1.1 Input Type
Set by selecting input type from among VOLTS (DC voltage) and
CURRENT (DC current) in D16: INP TYPE.
8.1.2 Input Hard Range
Set by selecting the input hard range from among AUTO, HIGH,
MIDDLE, and LOW in D17: SELECT RANGE. Generally, select
AUTO.
●
AUTO: Sets the input hard range automatically with re-
spect to the input range to be set.
● HIGH: For a span of 5 V or more in an input range of -10
to +10 V
● MIDDLE: For a span of 2.5 V or more in an input range
of -5 to +5 V
● LOW: For a span of 0.5 V or more in an input range of -1
to +1 V
NOTE
The conditions for the input hard range (HIGH, MIDDLE,
and LOW) are specified for operations within the range of
accuracy rating. The input range may be set to a range not
meeting these conditions, but take note of accuracy limita-
tions. Similar accuracy limitations exist even when AUTO
is selected. For more information on accuracy limitations,
see the general specifications of VJQ7 (GS 77J1Q17-01E).
8.1.3 Input Range
Set the 0% value of input range to D22: INPUT1 L_RANGE and
the 100% value of input range to D23: INPUT1 H_RANGE within
the numerically specified range.
8.1.4 Output Range Unit
When referring and setting the output range, select and set Hz or
kHz in D10: UNIT.
8.1.5 Output Range
Set the 0% value of output range in D24: OUT L_RNG, and 100%
of output range in D25: OUT H_RNG within the numerically
specified range.
8.1.6 Pulse Width Type
Select and set "50%" (duty 50%), "ON PULSE" (ON-state pulse
width fixed), or "OFF PULSE" (OF-state pulse width fixed) in
D46: PULSE TYPE.
8.1.7 Pulse Width Time
The pulse width time is set when the pulse width type is set to "ON
PULSE."
Select and set the numerical value in D43: PULSE WIDTH.
Pulse width setting range: 0.1 to 500ms, by 0.1ms
The output frequency when ON-state pulse width or OFF-state
pulse width is fixed is as follows. The frequency over the follow-
ing frequency is limited.
1
Pulse width set value(ms)
Ч
2
Ч
1000[Hz]