ETS-Lindgren OMS, Руководство пользователя

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Programming the OMS www.ets-lindgren.com
www.fmgrupotec.com fmgrupotec@fmgrupotec.com 0034.903.360.306 Calle Algepser n16 Parque Empresarial Tactica- 46980 Paterna (Valencia)- España
S
ET
A
LARM
H
YSTERESIS
The OMS may be used as a control system. When used to regulate oxygen
levels, a dead band, hysteresis may be required. This menu sets the alarm
hysteresis to a desired concentration of oxygen. When using hysteresis, the
alarm set point becomes an average alarm setting for an action to occur. When
adding the hysteresis value to the alarm set point, this then defines the alarm and
dead band for an action to occur.
For example, to require a valve to close at 14.9% oxygen level and to reopen at
15.5% oxygen level, set the alarm threshold at 15.2% and the hysteresis value at
0.3%.
Valve off: Average alarm set point = 15.2% - Hysteresis 0.3% = 14.9%
Valve on: Average alarm set point = 15.2% + Hysteresis 0.3% = 15.5%
Step Display
1. Push the joystick down to
access the menu.
Set Alarm Hysteresis
2. Push the joystick to the right. Set Alarm 1 Hysteresis
3. Push the joystick up to
increase the percentage; the
maximum value is 2.5%. Push
the joystick down to decrease
the percentage. Enter to
accept the value.
The display will indicate the selected
value, and then will default to the
Set Alarm 1 Hysteresis menu.
4. Push the joystick down to
access the next submenu.
Set Alarm 2 Hysteresis
5. Push the joystick to the right to
display a value 0.0%. Push the
joystick up to increase the
percentage; the maximum
value is 2.5%. Push the
joystick down to decrease the
percentage. Enter to accept
the value.
The display will indicate the selected
value, and then will default to the
Set Alarm 2 Hysteresis menu.