0..10V INPUT CHECK
IMPORTANT PRELIMINARY INFORMATION
When an external controller is used with a 0-10V signal for power control, it is essential that the system, on the supply side,
is fitted with an additional temperature sensor, to be connected to the external controller.
This must therefore be installed if not already present.
SETTINGS ON DSP
The settings required on the DSP to select the control function with 0-10V controller are:
- Enter the Technician Menu (see page 34)
- Enter "1. ADVANCED CH SETTINGS" and proceed to line “6. Request type” (see page 35)
- Then select “0-10V signal [%]” (power request) or “0-10V signal [SP]” (temperature request).
With these settings, the appliance heating power / temperature is managed directly by the 0-10V signal as follows:
A) with voltage increase
voltage < 2V
---> OFF
2V
≤ voltage ≤ 10V ---> linear variation of Power or Temperature
B) with voltage decreasing 2V ≤ voltage ≤ 10V ---> linear variation of Power or Temperature
1V
≤ voltage < 2V ---> Minimum Power or Minimum Temperature
voltage < 1V
---> OFF
In both modes, climatic control is managed by the external controller, and therefore to avoid problems of overlapping time
bands, at least one of the following conditions must apply:
- the Timer is disabled
- the Timer is enabled but not set to "OFF" mode
To modify the functions on level “3.Scheduler settings”:
- Enter the Technician Menu (see page 34)
- Select “5.USER SETTINGS” (see page 37)
- Enter the line “1.Heating” and proceed to the line “3. Scheduler settings“
IMPORTANT
The heating function (CH) must always be active (not disabled).
10V
2V
1V
Pmin
Pmax
0-10V power request [%]
0
5V
0-10V temperature request [sp]
Max
CH T
Min
CH T
10V
2V
1V
0
5V
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INST
ALLA
TION
Summary of Contents for S-AF
Page 63: ...NOTES 63 ...
