Micromod Micro-DCI: 53MC5000 Multi-Loop Process Controller Instruction Manual - Manual (Page 229)

11.2 CS20 CONTROL SIGNALS
Loading CS20 connects the 53MC5000 Controller function blocks for operation as two standard
PID controllers. As shown in Figure 11-1, up to ten control signals are available; however, only
two are essential for each loop controller: they are the Process Variable and the Control Output. If
the other six control signal functions are not needed, then their respective datapoints should be left
at the default values. Table 11-1 below describes the ten signals in CS20.
Table 11-1. CS20 Control Signals
Control
Signal Definition
Cord
Set
ITB
Rear
Term
Board
Signal
AI0 - Process
Variable Loop 1 This analog input signal represents the value of
the Loop 1 process to be manipulated by the
controller. It is compared to the Loop 1 control
setpoint to determine the Control Output Loop 1
value. TB1-1 (+)
TB1-2 (-)
TB1-3 1 (+)
2 (-)
3 +24 V
AI0
SC
AI1 - Process
Variable Loop 2 This analog input signal represents the value of
the Loop 2 process to be manipulated by the
controller. It is compared to the Loop 2 control
setpoint to determine the Control Output Loop 2
value. TB1-5 (+)
TB1-6 (-)
TB1-7 4 (+)
5 (-)
6 +24 V
AI1
SC
AI2 - Remote
Setpoint Loop 1 This analog input signal represents the value to
be used as the Loop 1 control setpoint when
remote setpoint operation is selected with the
faceplate push buttons and enabled by DI0. TB1-9
TB1-10 (+)
TB1-11 (-) 1
7 (+)
8 (-) +24 V
AI2
SC
AI3 - Remote
Setpoint Loop 2 This analog input signal represents the value to
be used as the Loop 2 control setpoint when
remote setpoint operation is selected with the
faceplate push buttons and enabled by DI1. TB1-13
TB1-14 (+)
TB1-15 (-) 4
9 (+)
8 (-) +24 V
AI3
SC
AO0 - Control
Output Loop 1 This is the 4-20 mA output signal that drives
the Loop 1 final control element. TB1-17 (+)
TB1-18 (-) 10 (+)
11 (-) AO0
PC
AO1 - Control
Output Loop 2 This is the 4-20 mA output signal that drives
the Loop 2 final control element. TB1-19 (+)
TB1-20 (-) 12 (+)
11 (-) AN01
PC
DI0 - Remote
Enable Loop 1 When a closed contact is present on this input,
the operator can select the setpoint value to be
set by the value of the Loop 1 Remote Setpoint
input with the R/L push button. TB2-1 (+)
TB2-2 (-) 13 (+)
14 (-) DI0
PC
DI1 - Remote
Enable Loop 2 When a closed contact is present on this input,
the operator can select the setpoint value to be
set by the value of the Loop 2 Remote Setpoint
input with the R/L push button. TB2-3 (+)
TB2-4 (-) 15 (+)
14 (-) DI1
PC
DO0 - Process
Alarms Loop 1 This contact is closed when the Loop 1 Process
Variable value is not within the C103 and C104
datapoint values (Loop 1 Alarm Limits 1 and 2);
otherwise, the contact is open. TB2-5 (+)
TB2-6 (-) 16 (+)
17 (-) DO0
PC
1 of 2
53MC5000 Process Control Station
11-2