Toptech RCU II DIV2 - Page 41

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Certain I/O circuit symbols have dedicated functions, which are described in the table below.
This list is not exhaustive, but contains those most frequently used:
TYPE I/O
CIRCUIT
SYMBOL
FUNCTION
AC Output
All AC outputs may be used as line voltage ON/ OFF control.
AC Output
If a digital valve control is used, PORT 2 is dedicated to control
the (N.O.) upstream solenoid.
AC Output
If a digital valve control is used, PORT 3 is dedicated to control
the (N.C.) downstream solenoid.
AC Output
S
1
If an additive injection control is used, the numbered AC output
must be paired with the corresponding numbered DC input.
DC Input
+
-
All DC inputs may be used as general digital signal inputs.
DC Input
+
-
A
0°
If a product meter pulser is used, PORT 4 is dedicated to the A
channel (single or optional quadrature).
DC Input
+
-
B
90°
If a product meter pulser is used, PORT 5 is dedicated to the B
channel (of optional quadrature).
DC Input
+
-
1
If an additive injection control is used, the numbered DC input
must be paired with the corresponding numbered AC output.
AC Input
L
N
All AC inputs may be used as line voltage digital inputs
(typically permissives).
DC Output
+
-
All DC outputs may be used as general digital outputs.
RTD Input
100Ω
°C
Pt
°F
The RTD input is reserved for MultiLoad temperature
compensation.
4-20 mA Analog
Input
i
4-20mA
%
The analog input can be used with configurable MultiLoad
inputs such as density, pressure, or temperature.
4-20 mA Analog
Output
i
4-20mA
%
(0 Vdc)
12-30 Vdc
The analog output can be used with configurable MultiLoad
outputs such as Analog Control Valve or Analog Pump.