Yaskawa 120 Series I/O Modules - Manual (Page 253)

6 Installation and Wiring
6.2.4 Wiring Analog I/O Modules
6-26
2) Wiring the Analog Input Module ( ±10V, 4 channel)
a) Connecting Differential Signal Source
(1) Connect + side of a differential signal to “+” terminal of the Module.
(2) Connect - side of a differential signal to “-” terminal of the Module.
(3) Connect the shield of a shielded twisted-pair wire to “Shield” terminal of the
Module.
(4) Connect the shield of a shielded twisted-pair wire on the signal source side to
0V of the differential signal source.
Incorrect connection will make the input signal unstable and cause malfunction.
b) Connecting Single-ended Signal Source
(1) Connect + side of a singe-ended signal to “+” terminal of the Module.
(2) Connect - side of a single-ended signal to “-” terminal of the Module,
(3) Connect the shield of a shielded twisted-pair wire to “Shield” terminal of the
Module and short “Shield” terminal to “-” terminal.
Incorrect connection will make input signal unstable and cause malfunction.
c) For an unused input circuit, short its “+” terminal to “-” terminal and also short one of
these terminals to its “Shield” terminal.
Incorrect connection will make input signal unstable and cause malfunction.
d) Refer to 6.2.5 Grounding for the grounding of Analog Input Modules.
Note: There is no isolation provided between the various input circuit channels.
If isolation between channels is required, use a commercial isolation ampli-
fier for each channel.
3) Wiring the Analog Input Modules (0 to 10V, 4 channel)
a) Connecting Single-ended Signal Source
(1) Connect the “+” side of a single-ended signal to the “+” terminal of the Module.
(2) Connect the “-” side of a single-ended signal to the “-” terminal of the Module.
(3) Connect the shield of a shielded twisted-pair wire to “Shield” terminal of the
Module and short the “Shield” terminal to the “-” terminal.
Incorrect connection will make input signal unstable and cause malfunction.
b) For an unused input circuit, short its “+” terminal to “-” terminal and also short one of
these terminals to its “Shield” terminal.
Incorrect connection will make input signal unstable and cause malfunction.
c) Refer to 6.2.5 Grounding for the grounding of Analog Input Modules.
Note: Isolation between Input Channels
There is no isolation provided between the various input circuit channels.
If isolation between channels is required, use a commercial isolation ampli-
fier for each channel.