VXi VT1422A 사용자 설명서
172 Advanced Programming with the VT1529B
Field Wiring of the
VT1586A
The field wiring for the VT1586A, when used with the VT1529B, is
different from the wiring of the VT1586A when used stand-alone. In
particular, with the VT1529B option 002 VT1529B-to-VT1586A cable, the
G (Guard) terminals of the VT1586A are redefined to be the excitation
source and excitation sense terminals for the reference thermistor(s).
Figure 5-4 shows the VT1586A front panel connections. Note that the
Sense + and - terminals for the channels are the same using the VT1586A.
different from the wiring of the VT1586A when used stand-alone. In
particular, with the VT1529B option 002 VT1529B-to-VT1586A cable, the
G (Guard) terminals of the VT1586A are redefined to be the excitation
source and excitation sense terminals for the reference thermistor(s).
Figure 5-4 shows the VT1586A front panel connections. Note that the
Sense + and - terminals for the channels are the same using the VT1586A.
When using the VT1586A with the VT1529B to measure temperature,
instead of using a current source to excite the isothermal reference
thermistor, use a voltage source and a resistor divider network. The
excitation voltage supply that the VT1529B is connected to is routed
through the VT1529A-to-VT1586A cable and is made available on the four
Excitation + and - terminals on the VT1586A for use with the divider. The
recommended thermistor divider circuit is shown in Figure 5-5 and the
recommended field wiring for the divider in shown in Figure 5-6. Note that
the excitation voltage is not being connected to a measurement channel.
Instead, the same dedicated excitation measurement channel on the
VT1529B can be used that was use for strain.
instead of using a current source to excite the isothermal reference
thermistor, use a voltage source and a resistor divider network. The
excitation voltage supply that the VT1529B is connected to is routed
through the VT1529A-to-VT1586A cable and is made available on the four
Excitation + and - terminals on the VT1586A for use with the divider. The
recommended thermistor divider circuit is shown in Figure 5-5 and the
recommended field wiring for the divider in shown in Figure 5-6. Note that
the excitation voltage is not being connected to a measurement channel.
Instead, the same dedicated excitation measurement channel on the
VT1529B can be used that was use for strain.
Note
The Excitation Sense + and - channels shown in Figure 5-4 are normally
not used. They can be used to “wrap around” the excitation voltage outputs
on the VT1586A to the corresponding measurement channel on the
VT1529B, if necessary.
not used. They can be used to “wrap around” the excitation voltage outputs
on the VT1586A to the corresponding measurement channel on the
VT1529B, if necessary.
Figure 5-4. VT1586A Terminal Panel Connections
Ch16
Sense +
Sense +
Ch17
Sense +
Sense +
Ch18
Sense +
Sense +
Ch19
Sense +
Sense +
Ch16
Sense -
Sense -
Ch17
Sense -
Sense -
Ch18
Sense -
Sense -
Ch19
Sense -
Sense -
Ch20
Sense +
Sense +
Ch21
Sense +
Ch22
Sense +
Sense +
Ch23
Sense +
Sense +
Ch20
Sense -
Sense -
Ch21
Sense -
Ch22
Sense -
Sense -
Ch23
Sense -
Sense -
Ch20
Ex.Sense +
Ex.Sense +
Ch20
Ex.Sense -
Ch22
Ex.Sense +
Ex.Sense +
Ch22
Ex.Sense -
Ex.Sense -
Ch16
Excitation +
Excitation +
Ch16
Excitation -
Excitation -
Ch18
Ex.Sense +
Ex.Sense +
Ch18
Ex.Sense -
Ex.Sense -
Ch24
Sense +
Sense +
Ch25
Sense +
Sense +
Ch26
Sense +
Sense +
Ch27
Sense +
Ch24
Sense -
Sense -
Ch25
Sense -
Sense -
Ch26
Sense -
Sense -
Ch27
Sense -
Sense -
Ch28
Sense +
Sense +
Ch29
Sense +
Sense +
Ch30
Sense +
Sense +
Ch31
Sense +
Sense +
Ch28
Sense -
Sense -
Ch29
Sense -
Sense -
Ch30
Sense -
Sense -
Ch31
Sense -
Sense -
Ch28
Ex.Sense +
Ex.Sense +
Ch28
Ex.Sense -
Ch30
Ex.Sense +
Ex.Sense +
Ch30
Ex.Sense -
Ex.Sense -
Ch24
Excitation +
Excitation +
Ch24
Excitation -
Excitation -
Ch26
Ex.Sense +
Ex.Sense +
Ch26
Ex.Sense -
Ex.Sense -
Thermistor
Center Sense +
Thermistor
Center Sense -
Thermistor
Right Sense +
Thermistor
Right Sense -
Ground
Trigger
Ch0
Sense +
Sense +
Ch1
Sense +
Sense +
Ch2
Sense +
Sense +
Ch3
Sense +
Sense +
Ch0
Sense -
Sense -
Ch1
Sense -
Sense -
Ch2
Sense -
Sense -
Ch3
Sense -
Sense -
Ch4
Sense +
Sense +
Ch5
Sense +
Sense +
Ch6
Sense +
Sense +
Ch7
Sense +
Sense +
Ch4
Sense -
Sense -
Ch5
Sense -
Sense -
Ch6
Sense -
Sense -
Ch7
Sense -
Sense -
Ch4
Ex.Sense +
Ex.Sense +
Ch4
Ex.Sense -
Ex.Sense -
Ch6
Ex.Sense +
Ex.Sense +
Ch6
Ex.Sense -
Ex.Sense -
Ch0
Excitation +
Ch0
Excitation -
Excitation -
Ch2
Ex.Sense +
Ex.Sense +
Ch2
Ex.Sense -
Ex.Sense -
Ch8
Sense +
Sense +
Ch9
Sense +
Sense +
Ch10
Sense +
Sense +
Ch11
Sense +
Sense +
Ch8
Sense -
Sense -
Ch9
Sense -
Sense -
Ch10
Sense -
Sense -
Ch11
Sense -
Sense -
Ch12
Sense +
Sense +
Ch13
Sense +
Sense +
Ch14
Sense +
Sense +
Ch15
Sense +
Sense +
Ch12
Sense -
Sense -
Ch13
Sense -
Sense -
Ch14
Sense -
Sense -
Ch15
Sense -
Sense -
Ch12
Ex.Sense +
Ex.Sense +
Ch12
Ex.Sense -
Ex.Sense -
Ch14
Ex.Sense +
Ex.Sense +
Ch14
Ex.Sense -
Ex.Sense -
Ch8
Excitation +
Excitation +
Ch8
Excitation -
Excitation -
Ch10
Ex.Sense +
Ex.Sense +
Ch10
Ex.Sense -
Ex.Sense -
Current
Out +
Current
Out -
Current
In +
Current
In -
Thermistor
Thermistor
Sense -
Sense +
NOT USED
NOT
USED
NOT USED
Left Side
Right Side