Riello SC ACS 80 Manual page 23

6.5.11.3. Followup time
Follow up time for the relay after output V1/V2 is switched off.
6.5.12. Parallel operation V2
Activates in parallel the relay assigned with V2 0-10 V / PMW output. (see 6.5.9.)
6.5.13. Always on
Relay is permanently switched on.
b
High efficiency pumps with a 0-10V / PWM signal can be powered using the additional function "Always on" or
"Parallel functioning V1/V2" via relays 1-3.
6.5.13.1. Always on
Activate or deactivate "always on".
6.6. Relay 2
See the functions for Relay 1.
6.7. Relay 3
See the functions for Relay 1.
6.8. V2 signal
With this function the PMW/0-10V output 2 is used for an additional high-efficiency pump. If a pump function is activated
(e.g. circulation), additional parameters for pump settings V2 and V2 speed -control have to be set. For other functions
(e.g. zone valve) the output signal switch from 0 to 10 V. For other switching variants an additional relay box can be used
to switch a potential-free relay at this output. Please note the technical information about the PMW/0-10V outputs
6.8.1. V2 signal
See the functions for Relay 1.
6.8.2. Pressure control
This menu is used to set the system pressure control with direct probe. The message is shown and the LED blinks red
when the pressure drops below the minimum level or exceeds the maximum level.
6.8.3. Pressure control
Activate or disactivate the function
6.8.4. RPS1 / RPS2 = Type of pressure sensor
This menu is used to determine the type of pressure sensor used.
Please note: If e.g. VFS1 is connected, RPS1 option is not shown.
6.8.5. Pmin
Min pressure. If the pressure drops under this value, an error message is displayed and the LED links red.
6.8.6. Pmax
Max pressure. If the pressure exceeds this value, an error message is displayed and the LED links red.
6.9. Sensor calibration
Deviations in the temperature values displayed, for example due to cables which are to long or sensors which are not
positioned optimally, can be compensated for manually here. The settings can be made for each individual sensor in
steps of 0.5°C.
b
Settings are only necessary in special cases at the time of initial commissioning by the specialist. Incorrect meas-
urement values can lead to unpredictable errors.
6.10. Commissioning
Starting the commissioning help guides you in the correct order through the basic settings necessary for commissioning,
and provides brief descriptions of each parameter in the display. Pressing the "esc" key takes you back to the previous
value so you can look at the selected setting again or adjust it if desired. Pressing the "esc" more than once takes you
back to the selection mode, thus cancelling the commissioning help.
b
May only be started by a specialist during commissioning! Observe the explanations for the the individual parame-
ters in these instructions, and check whether further settings are necessary for your application.
6.11. Factory settings
All of the settings that have been made can be reset, thus returning the controller to its delivery state.
b
The entire parametrisation, analyses, etc. of the controller will be lost irrevocably. The controller must then be com-
missioned once again.
6.12. Time and date
This menu is used to set the current time and date.
b
For proper functioning of the controller and statistics for the system data it is essential for the time to be set accu-
rately on the controller. Please note that the clock continues to run for about 24 hours if the mains voltage is inter-
rupted, and after that has to be reset.
6.13. Daylight saving time
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