ero electronic LFS Manuel De Service page 34

Output status indication Output status indication: Two indicators Output status indication Output status indication Output status indication
(OUT 1 and OUT 2) are lits when the respective
output is in ON condition.
Output level limiter: Output level limiter Output level limiter Output level limiter Output level limiter
- For one control medium :
from 0 to 100 % .
- For two control mediums :
from -100 to +100 % .
This function may be operative at instrument start
up for a programmable time (To avoid thermal
shock and/or preheating the plant) otherwise it
can be enabled by an external contact.
Cycle times: Cycle times Cycle times
Cycle times Cycle times
- For out 1 it is programmable from 1 to 200 s.
- For out 2 it is programmable from 1 to 200 s.
Relative cooling gain: Relative cooling gain Relative cooling gain Relative cooling gain Relative cooling gain programmable from
0.20 to 1.00.
Overlap/dead band: Overlap/dead band: Overlap/dead band: programmable from - 20
Overlap/dead band: Overlap/dead band:
% to + 50 % of the proportional band
OUTPUT 1 OUTPUT 1
OUTPUT 1 OUTPUT 1 OUTPUT 1
Type: relay SPDT contact (NO or NC selectable Type: relay Type: relay Type: relay Type: relay
by jumper).
Contact rated Contact rated
Contact rated: 3 A at 250 V AC on resistive Contact rated Contact rated
load.
Output cycle time Output cycle time Output cycle time:programmable from 1 s to Output cycle time Output cycle time
200 s.
Function Function Function Function Function: programmable as heating or cooling
output
OUTPUT 2 OUTPUT 2 OUTPUT 2 OUTPUT 2 OUTPUT 2
Type: relay Type: relay Type: relay SPST contact . Type: relay Type: relay
Contact rated Contact rated Contact rated Contact rated Contact rated: 2 A at 250 V AC on resistive
load.
Function Function Function Function Function: programmable as:
- control output ( cooling)
- Alarm 1 output
Output cycle time Output cycle time Output cycle time Output cycle time Output cycle time (when used as control output):
programmable from 1 s to 200 s.
LFS-1-CC.P65 31
OUTPUT 3 OUTPUT 3 OUTPUT 3 OUTPUT 3 OUTPUT 3
Type Type Type: relay with SPST contact
Type Type
Contact rated: 2 A at 250 V AC on resistive Contact rated Contact rated Contact rated Contact rated
load.
Function Function
Function Function Function: Alarm 2 output.
A L A R M S A L A R M S A L A R M S A L A R M S A L A R M S
Actions: Direct or reverse acting. Actions Actions Actions Actions
Alarm functions Alarm functions Alarm functions: each alarm can be configured Alarm functions Alarm functions
as process alarm, band alarm or deviation alarm.
Alarm reset: automatic or manual reset Alarm reset Alarm reset
Alarm reset Alarm reset
programmable on each alarm.
Stand by (mask) alarm Stand by (mask) alarm Stand by (mask) alarm: each alarm can be Stand by (mask) alarm Stand by (mask) alarm
configured with or without stand by (mask)
function.
This function allows to delete false indication at
instrument start up and/or after a set point
change.
Process alarm: Process alarm Process alarm
Process alarm Process alarm
Operative mode Operative mode : High or low programmable. Operative mode Operative mode Operative mode
Threshold Threshold Threshold : programmable in engineering unit Threshold Threshold
within the input span.
Hysteresis Hysteresis: programmable from 0.1 % to 10.0 % of Hysteresis Hysteresis Hysteresis
the input span (P4 - P3).
Band alarm Band alarm Band alarm Band alarm Band alarm
Operative mode Operative mode
Operative mode Operative mode: Inside or outside programma- Operative mode
ble.
Threshold : programmable from 0 to 500 units. Threshold Threshold Threshold Threshold
Hysteresis Hysteresis Hysteresis : programmable from 0.1 % to 10.0 % of Hysteresis Hysteresis
the input span.
Deviation alarm: Deviation alarm: Deviation alarm: Deviation alarm: Deviation alarm:
Operative mode : High or low programmable. Operative mode Operative mode Operative mode Operative mode
Threshold Threshold
Threshold : programmable from - 500 to +500 units. Threshold Threshold
Hysteresis Hysteresis : programmable from 0.1 % to 10.0 % Hysteresis Hysteresis Hysteresis
ofhe input span.
GB GB
GB GB GB 31
13/07/2004, 14:40