Delta AS Series Manual page 234

A S S er i es Mo d u le Ma n ua l
7.2.8 Wiring
Precautions

To ensure the analog-to-digital module functions well and reliably, the external wiring must prevent noise.
Before you install the cables, follow the precautions below.
(1)
To prevent a surge and induction, the AC cable and the input signal cables that are connected to the
ASTC-A Series must be separate cables.
(2)
Do not install the cable near a main circuit, a high-voltage cable, or a cable connected to a load
which is not a PLC. In addition, the cable must not be bound to a main circuit, a high-voltage cable,
or a cable connected to a load which is not a PLC.
(3)
Ground shielded cables and hermetically sealed cables separately.
(4)
Terminals with insulation sleeves cannot be arranged as a terminal block, so you should cover the
terminals with insulation tubes.
(5)
Note1: do not wire empty terminals.
(6)
Note2: only use copper conducting wires with a temperature rating of 60/75°C and the length must
be less than 50 m.
(7)
Note3: TC modules must run for 30 minutes before they start to take any temperature measurement.
External wiring

J,K,R,S,T,E,N, B
_7
- 1 0 0 mV ~1 0 0m V
*1. Use shielded twisted pair cables for Type J, type K, type R, type S, type T, type E, type N
and type B thermocouples, and keep them separate from power cables and other cables
which generate noise.
7 - 3 8
+
-
Shielded cable* 1
+
-
CH 1
I 1 +
I1 -
S L D
CH3
I3 +
I3 -
SL D
A DC
INA
C old junction -
c ompensation