model 2704 controller installation and operation handbook - Soliton

2704 Controller Introduction
1.4.1. Status Messages
Messages appear on the display to show the current status of the controller. Table 1-1 below
describes these messages:-
LP1, LP2,
LP3
AUT
MAN
SP1, SP2,
PO, REM
CSD
OVR
RAT
Indicates which loop is being viewed
The selected loop is in automatic (closed loop) control
The selected loop is in manual (open loop) control
Indicates where the SP is derived, i.e. Setpoint 1, Setpoint 2, Programmer,
Remote
Indicates that the loop is in cascade.
Indicates that the loop is in override.
Indicates that the loop is in ratio (Ratio must be enabled from the parameter
list at the bottom of the display)
Indicates a program is activated
Indicates a program is held at its current levels
Indicates a program is in reset condition i.e. not running
[UNITS]
[SBY]
When an alarm occurs an alarm symbol flashes in the header banner. When
the alarm is acknowledged but is still active the symbol will be permanently lit.
When the alarm is acknowledged but is no longer active the symbol will
disappear.
See Chapter 7 ‘Alarm Operation’ for further details.
The process units are displayed in the right hand side of the banner
This symbol will flash in the right hand side of the banner in place of ‘units’
when the controller is in standby mode. In this state all interfaces to the plant
are switched to a rest condition. For example, all control outputs = 0.
When this symbol is on the controller is no longer controlling the
process.
This symbol will be on when:-
• The controller is in configuration mode
• Standby mode has been selected through the user interface or via an
external digital input
• During the first few seconds after start up
Table 1-1: Status Messages
Installation and Operation Handbook. Part No HA026502 Issue 1.0 Apr-00 1-7