Toptech MultiLoad II EXL Installation Manual page 36

CHAPTER 5– CONNECTING FIELD DEVICES TO THE I/O BOARD
This list is not exhaustive, but contains those most frequently used:
T I/O
YPE
AC Output
AC Output
AC Output
AC Output
DC Input
DC Input
DC Input
DC Input
AC Input
DC Output
RTD Input
4-20 mA Analog
Input
4-20 mA Analog
Output
36
MultiLoad II/ RCU II Explosion Proof Lite (EXL) Installation Guide - Part # 6070
C
IRCUIT
S
YMBOL
All AC outputs may be used as line voltage ON/ OFF control.
If a digital valve control is used, PORT 2 is dedicated to control
the (N.O.) upstream solenoid.
If a digital valve control is used, PORT 3 is dedicated to control
the (N.C.) downstream solenoid.
If an additive injection control is used, the numbered AC output
1
must be paired with the corresponding numbered DC input.
S
All DC inputs may be used as general digital signal inputs.
+
-
If a product meter pulser is used, PORT 4 is dedicated to the A
0°
+
channel (single or optional quadrature).
A -
If a product meter pulser is used, PORT 5 is dedicated to the B
90°
+
channel (of optional quadrature).
B -
If an additive injection control is used, the numbered DC input
1
+
must be paired with the corresponding numbered AC output.
-
All AC inputs may be used as line voltage digital inputs
L
(typically permissives).
N
All DC outputs may be used as general digital outputs.
+
-
The RTD input is reserved for MultiLoad temperature
100Ω
Pt
°C
compensation.
°F
The analog input can be used with configurable MultiLoad
4-20mA
i
inputs such as density, pressure, or temperature.
%
The analog output can be used with configurable MultiLoad
4-20mA
i
outputs such as Analog Control Valve or Analog Pump.
%
(0 Vdc)
12-30 Vdc
F
UNCTION