Instructions

Ix350_02b_oi_e.doc / Mai-18 Page 25 / 50
5.4. Preselection 1 Menu
This function is only available for devices with option CO, AO or RL.
MODE 1
Switching conditions for preselection 1. Output/ relay/ display switches under the following conditions:
0
|RESULT|>=|PRES|
Absolute value of the display value is greater or equal absolute value of
PRESELECTION 1
With HYSTERESIS 1 not equal 0 the following switching condition is
applied:
Display value >= PRESELECTION 1  ON,
Display value < PRESELECTION 1 – HYSTERESIS 1 OFF
1
|RESULT|<=|PRES|
Absolute value of the display value is less or equal absolute value of
PRESELECTION 1 (start-up suppression (START UP DELAY) is advisable)
With HYSTERESIS 1 not equal 0 the following switching condition is
applied:
Display value <= PRESELECTION 1  ON,
Display value > PRESELECTION 1 + HYSTERESIS 1 OFF
2
|RESULT|=|PRES|
Absolute value of the display value is equal absolute value of
PRESELECTION 1
A range (Preselection +/- ½ Hysteresis) can be defined and monitored in
conjunction with the hysteresis.
With HYSTERESIS 1 not equal 0 the following switching condition is
applied:
Display value > PRESELECTION 1 + ½ HYSTERESIS 1  OFF,
Display value < PRESELECTION 1 - ½ HYSTERESIS 1  OFF
3
RESULT>=PRES
Display value is greater or equal PRESELECTION 1, e.g. overspeed
With HYSTERESIS 1 not equal 0 the following switching condition is
applied:
Display value >= PRESELECTION 1  ON,
Display value < PRESELECTION 1 – HYSTERESIS 1 OFF
4
RESULT<=PRES
Display value is less or equal PRESELECTION 1, e.g. underspeed
(start-up suppression (START UP DELAY) is advisable)
With HYSTERESIS 1 not equal 0 the following switching condition is
applied:
Display value <= PRESELECTION 1  ON,
Display value > PRESELECTION 1 + HYSTERESIS 1 OFF
5
RESULT=PRES
Display value is equal PRESELECTION 1. A range (Preselection +/- ½
Hysteresis) can be defined and monitored in conjunction with the hysteresis.
With HYSTERESIS 1 not equal 0 the following switching condition is
applied:
Display value > PRESELECTION 1 + ½ HYSTERESIS 1  OFF,
Display value < PRESELECTION 1 - ½ HYSTERESIS 1  OFF
6
RES>=PRES-TRAIL
Trailing PRESELECTION 1:
Display value is greater or equal PRESELECTION 2 – PRESELECTION 1 
ON,
PRESELECTION 1 is the trailing value from PRESELECTION 2
7
ERROR SET
Error message for device errors