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Sensaphone
®
ISACC Instruction Manual
Input terminal pair
COMMON
INPUT
Power supply
terminal block
Wire to the 15V power supply.
POWER
EG 24 24 BAT C 20V C 15V C 12V C 5V C
AC AC
+
4-20MA
-
4-20mA sensor
4-20mA sensor using internal power supply
4-20mA (externally powered) - To use an external power supply, wire the positive lead
from the sensor to the positive terminal on the external power source. Wire the negative lead
from the sensor to a numbered input screw on ISACC. Next, connect the power supply to
ISACC by wiring the negative terminal on the power supply to a common screw on ISACC.
See diagram below:
VDC
COMMON
INPUT
+ 4-20
mA
-
4-20mA sensor
External power source
Input terminal pair
4-20mA sensor using external power source
0-5V sensor - To use a 0-5V sensor with ISACC, wire the sensor signal lead to a numbered
input terminal screw on the unit. Then, wire the sensor common to the corresponding com-
mon screw on ISACC. See diagram below:
Input terminal pair
COMMON
INPUT
Signal
0-5V
Common
0-5V sensor
SHIELDED WIRE
ISACC is designed to work in most installations without the need of shielded wire. This does
not apply to wire run in conduit that has other noise-generating conductors such as 60Hz AC.