User Manual

3
Siemens Datasheet A6V10954420_en--_f
Smart Infrastructure 2020-10-29
Control behaviour (P01)
The factory setting for control is “PID slow”, ideal for most heating systems. Optimum control
can be selected if control does not provide the desired result:
2-position, 1 K
2-position controller with 1 [K] switching hysteresis
● For systems with small capacity that appear slow
● For applications requiring extended runtimes or where frequent switching causes
problems
● For difficult control loops where hunting may result
Typical applications:
● Dry floor heating systems
● Heat pumps
● Electric heating with contactors
2-position, 0.5 K
● 2-position controller with 0.5 [K] switching hysteresis.
● For general control situations. Provides better comfort than 1 [K] switching hysteresis.
● Can also be used for difficult control situations.
PID slow
PID control behaviour for slow heating systems that require longer minimum On times and a
limited number of switching cycles per hour.
Typical applications:
● Wet floor heating systems, oil fired boilers
● Can also be used for all other types of heating applications. (Alternative setting)
Minimum switch on/off time > 4 minutes
Minimum period Approximately 12 minutes
PID fast
PID control behaviour for fast heating systems that tolerate a high number of switching
cycles.
Typical applications:
● Electric heaters with current valve
● Gas boilers
● Fast thermal actuators
Minimum switch on/off time > 1 minute
Minimum period Approximately 6 minutes
WARNING
Do not use PID fast for oil boilers or electric mechanical actuators!
Backup
When removing the batteries, the setpoints and information required for operating mode
changeover are retained for max. 2 minutes.