Analog Input Modules; Analog Output Modules - Toshiba nv Series Instruction Manual

Appendix C Notes on Applying the I/O Modules
C.6 Analog Input Modules
116
6F8C1220
Do not install or store the relay output module in the
following places:
CAUTION
・Silicon gases are present.
・Silicon products are used.
It may cause contact failure.
(1) For the analog input signal line, use a shielded twisted pair cable and wire it at
the minimum distance. Ground the cable shield at the analog input module.
To satisfy the requirements in the EMC instructions, connect the shielded cable
at the minimum (i.e., within 3 cm) distance to the chassis that contains the
installed nv series controller.
The configuration in (2) or (3) in Figure C.6-1 may, however, be more stable in
some cases.
(1)
(2)
(3)
Figure C.6-1 Analog input shield ground
(2) The converted value may be unstable, depending on the voltage state of the 24
V power supply.
If the converted result is unstable, replace the analog external power supply
with the dedicated power supply.
Prohibited
Analog
input
module
Analog
input
module
Analog
input
module