Liquiline CM442R/CM444R/CM448R
Operation
Hauser
73
Outputting the manipulated variable of a controller
To output a controller manipulated variable via a relay, the relay is modulated. The relay is
energized (pulse, t
1
) and is then de-energized (interval, t
0
).
Types of modulation:
1.
PWM
(pulse width modulation):
The duty cycle is varied within a period
T
(T=t
1
+t
0
). The cycle duration remains constant.
Typical application: solenoid valve
Function="Controller"
Function
Options
Info
Source of data
Options
• None
• Controller 1
• Controller 2
Factory setting
None
Select the controller that should act as the data source.
Operating mode
Options
• PWM
• PFM
Factory setting
PWM
PWM=pulse width modulation
PFM=pulse frequency modulation
Summary of Contents for Liquiline CM442R
Page 2: ......
Page 170: ...Liquiline CM442R CM444R CM448R 170 ...
Page 171: ...Liquiline CM442R CM444R CM448R Endress Hauser ...
Page 172: ...www addresses endress com ...