Micromod Micro-DCI: 53SL6000 Single Loop Controller - Manual (Page 89)

8.1.1 AI1 - Process Variable Input
This analog input signal value is compared to the
control setpoint to determine the control output
value.
Applicable parameters that may require configura-
tion changes:
Section 5.2, conF-Ai.1-(SPan, ZEro, SQrt, bASE,
dFLt).
For PV alarms:
Section 7.7, conF-cn.1-(AiX, PL1, PL2, Adb).
8.1.2 AI2 - Remote Setpoint Input
This analog input signal value is used as the con-
trol setpoint when remote (R) operation is selected
with the display panel push button and remote set-
point is enabled (closed) by DI2.
Applicable parameters that may require configura-
tion changes:
Section 5.2, conF-Ai.2-(SPan, ZEro, SQrt, bASE,
dFLt).
Section 7.7, conF-cn.1-(Sh, SL, SSr).
8.1.3 DO1 - PV High Alarm Contact
Out
D01 is closed (on) when the process variable value
is not within the alarm limit 1 (PL1) setting.
Applicable parameter that may require configura-
tion change:
Section 5.6, ProG-do-inV1.
8.1.4 DO2 - PV Low Alarm Contact Out
D02 is closed (on) when the process variable value
is not within the alarm limit 2 (PL2) setting.
Applicable parameter that may require configura-
tion change:
Section 5.6, ProG-do-inV2.
8.1.5 DI1 - Force Control Output
Contact Input
This is a closed contact or low active signal (0-1 V
dc). When a closed contact or 0-1 V dc signal is
present on this input, the control output value is
applied to the value of Ai7 (the control scheme D
input accepts the force control value and cS.d is
defaulted to select Ai7).
Applicable parameters that may require configura-
tion changes:
To enter a Force Output value in register Ai7:
Section 5.2, ProG-Ai-Ai.7 or oPEr-Ai7.
8.1.6 DI2 - Remote Enable Contact
Input
This is a low active signal (0-1 V dc). When a 0-1
V dc signal is present on this input, the operator
can select the Remote Setpoint input at AI2 as the
setpoint value with the R/L push button. The Re-
mote LED flashes if the R/L push button is pressed
and this signal is not low to enable remote setpoint
control.
Applicable parameter that may require configura-
tion change:
None.
8.1.7 AO1 - Control Output
This is the 4-20 mA signal that drives the final
control element.
Applicable parameters that may require configura-
tion changes:
Section 7.7, conF-cn.1-(oh, oL, hML, oSr, rSW,
rSV).
For control related prompts:
Section 7.7, conF-cn.1-(ir, iLr, Mr).
Sections 7.7, 9.2, 9.3, and 9.4, conF-cn.1-(Pb, tr,
td).
8.1.8 SchM Selection
Single loop control is implemented with the control-
ler default settings and SnGL (single loop) selected
from the SchM prompt of the cS module.
Applicable parameter that may require configura-
tion changes:
Section 7.6, ProG-cS-SchM.
53SL6000 Instruction Manual Section 8. Eight Control Strategies
8-2