industrie technik evolution AHU-XXXSX1 series, User Manual

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or
017
=2 (DI2) or
019
=9 (AI1 used as DI) or
021
=9 (AI2 used as DI) or
023
=9 (AI3 used as DI)).
Example for digital input 1 (
015
=2):
Unit ON= (
016
=0)
Unit OFF= (
016
=0)
Unit ON= (
016
=1)
Unit OFF= (
016
=1).
To switch the unit on/off using the timer periods, configure the
199
=1 parameter and set the timer switch on timer periods
(see “6. TIMER PERIODS operation and configuration (Model AHU-xxCSx1)” page 12 ) To switch the unit on/off via
modbus function, write in the register 9267 (see “41. Modbus (for AHU-xMxSx1 models)” page 137 .
If the appliance is switched off, the display shows the mode in which it was switched off.
OFF
MA
MA
= manually switched off using keypad.
OFF
reM
rEM
= switched off using remote contact.
OFF
MOD
MOd
= switched off by modbus.
OFF
tiMb
tiMb
= switched off using the timer period (if
199
=1).
If the appliance is switched off, all of the outputs are deactivated except for the main control output in heating mode if the
frost protection function is activated (see “26. Frost protection operation of the heating battery” page 109 ).
• Setpoint and setpoint offset configuration
Depending on the control method chosen, the climate setpoint is configured manually or calculated automatically.
- For compensation controls based on the external temperature, the operating setpoint is automatically calculated based
on the compensation parameters and the external temperature (see
“15. Control with setpoint compensation” page 37
).
By pressing the or button, the user can only view the compensated calculated setpoint.
- For the other types of control, cascade or fixed point 2-pipe or 4-pipe, it is possible to modify the
107
setpoint (for the
2-pipe operation in heating mode),
108
(for the 2-pipe operation in cooling mode) or
109
(for the 4-pipe functionality) if
204
=0 or a change of ±x°C from the setpoint if
204
=1 by pressing the or buttons.
When a setpoint is changed, the “set” icon flashes. The value can be changed using the or buttons. Any change
is automatically saved.
If
204
=1 (COMFORT function activated), a change of ±x°C from the setpoint is defined by the parameter
205
.
This function is used when the application needs to set a setpoint which is not accessible to the user.
By pressing the or button, the value of the setpoint offset to be applied to the operating setpoint is displayed. The
“°C” or “°F” icon flashes, based on the current operating unit. The value can be changed using the or button;
every change is automatically saved.
To exit the setpoint configuration menu, wait 4 seconds or press the
ESC
button.
• Fan operating mode
This paragraph can be applied only when one or more modulating fan are present, or with a 2, 3-speed on/off ventilator
and manualy regulated (
009
=0)
Press button
ESC
, the icon flashes with the indication of the fancoil operating mode on display B.
Press button
ESC
one or more times to select the fan operating mode:
SPE1
=control with speed 1,
SPE2
=control with speed 2,
SPE3
=control with speed 3.
The value is automatically saved.
To exit the menu, wait for 4 seconds until display B stops flashing.