SECOND SETPOINT (SP2)
SECOND SETPOINT (SP2) Alarm Output
Configure SP2 output to operate as an alarm from
SP2.A
in Level 2 and set the
temperature alarm setting in
SEt.2
Level 1. The alarm will be triggered when the process
temperature changes according to the options listed below.
dV.hi
Rises above the main setpoint by the value inserted at
SEt.2
.
dV.Lo
Falls below the main setpoint by the value inserted at
SEt.2
.
BAnd
Rises above or falls below the main setpoint by the value inserted at
SEt.2
.
FS.hi
Rises above the main setpoint by a
SEt.2
value that is greater than the setpoint.
FS.Lo
Falls below the main setpoint by a
SEt.2
value that is smaller than the setpoint.
SUBSIDIARY SP2 MODE
The following additional alarm functions can be added to the above alarm configurations
using the features found in
SP2.b
in Level 2.
LtCh
Once activated, the alarms will latch and can be manually reset when the alarm
condition has been removed.
Hold
This prevents any alarm operation on power-up and is automatically disabled
once the process reaches setpoint in order to allow normal alarm operation.
SECOND SETPOINT (SP2) Proportional control output
Configure in
Level 1
using
CyC.2
to select proportional cycle time and
bnd.2
to adjust
proportioning band. For Heat/Cool operation see Operating Manual.
In on/off mode, bnd.2 adjusts SP2 hysterisis.
SP2 OUTPUT AND LED INDICATION STATES - IN ALARM CONDITION
SP2 ALARM ANNUNCIATOR
When an SP2 alarm mode is selected in SP2.A the alarm annunciator
-AL-
is displayed,
alternating with the process temperature, during alarm condition.
Notes:
The alarm will be automatically reset when the temperature returns within the
bnd.2
setting in Level 1.
The annunciator may be disabled by selecting function
no.AL : on
in level 4.
SP2 in cool strategy
See Full Operating Manual (ADVANCED SETTINGS)
ERROR MESSAGES
SENSOR FAULT
Display flashes:
inPt: FAiL
Indicates:
thermocouple burnout RTD/Pt100 open or short circuit or
negative over-range.
Action:
Check sensor/wiring
NON-VOLATILE MEMORY ERROR
Display flashes:
dAtA
:
FAiL
Action:
De-power briefly. Replace unit if problem persists
MANUAL POWER ERROR
Display flashes:
hAnd
:
FAiL
SP1 set to ON/OFF in
CYC.t
Action:
Select proportional mode
IMMEDIATE FAIL ON AUTOTUNE START
Display flashes:
tunE
:
FAiL
Setpoint display 0
1. No setpoint entered.
Action:
Enter setpoint
2. SP1 set to ON/OFF in
CyC.t
Action:
Select proportional mode
Note:
To reset and clear error press
▲▼
together briefly to cancel message.
FAIL LATER DURING AUTOTUNE CYCLE
The thermal characteristics of the load exceed the Autotune algorithm limits. The failure
point indicated by any display 0.0 in
tech
e.g. Ctb = 0.0
Action:
1.
Change the conditions. eg. raise setpoint
2.
Try
tunE : At.SP
3.
If the error message persists, call local CAL representative for advice.
Alarm type
ON-OFF
operating mode
Proportional
operating mode
FS.HI
COOL
FS.LO
BAND
DV.LO
DV.HI
Deviation
Full scale
Strategy
SP2
Output state
SP2
LED state
SP2
Output state
SP2
LED state
BAND
: on-off mode only
Output ON
(Relay or SSd energised)
Output OFF
(Relay or SSd de-energised)
LED ON
Temperature above setpoint
Legend
English
6
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