Data Sheet for Product

9
Siemens
A6V12068497_en--_b
Smart Infrastructure
2021-12-15
Expert level (diagnostics & tests)
Parameter
Description
Range
Dependencies
d06
Software version
xxx is displayed, e.g. 010
d07
Fresh air unit DC output check
0 = 0 % output
1...100 = 1 % to 100 % output
P53
d08
Fresh air unit (FAU) relay output
check
Q1 to Q5 are NO relays (normal
open)
0 = All relays open
1 = Close only Q1
2 = Close only Q2
3 = Close only Q3
4 = Close only Q4
5 = Close only Q5
6 = All relays closed
P24, P25, P53
d09
FAU – active bypass damper
OPE = Open (normal position)
CLO = Close
P24
d10
FAU – active EXT/INT circulation
damper
OPE = Open (normal position)
CLO = Close
P25
Operation
Display
The display only shows the currently selected fan speed (factory setting). If bypass and
EXT/INT air circulation are enabled, the corresponding symbols indicate the type of air flow.
Air flow selection
When P25 = 1, the following can be selected by users.
● : External circulation without bypass ( i.e. fresh air via heat recovery unit)
● : External circulation with bypass ( i.e. fresh air will bypass heat recovery unit)
When P24 = 1, there is an additional selection available.
● : Internal circulation (i.e. no fresh air from outside)
FAU ECO mode (P02 = 2, P25 = 1)
FAU ECO mode can be enabled via setting P02 = 2 (i.e. FAU ECO can be selected) and
P25 = 1 (i.e. external and internal circulations must be enabled).
When FAU ECO mode is selected, the fresh air fan controller automatically switches be-
tween internal and external circulations for the air flow as per the ratio defined by P26. E.g.,
when P26 = 1:5, the controller switches to external circulation for 10 minutes, then internal
circulation for 50 minutes. The mode setting repeats automatically within one hour. Other ra-
tios can be selected via P26.
For FAU ECO mode, users can select external circulation without bypass (P24 = 0: disable)
and with bypass (P24 = 1: enable).
Fan type and fan speed adjustment
3-speed fan type (P53 = 3) and 1-speed fan are the factory setting. When P53 is set to 8,
ECM fan type is selected.
Only 3 manual fan speeds can be selected (low, medium and high) for 3-speed fan and ECM
fan.
Keylock
Keylock can be activated or deactivated via parameter P14 (see Control parameters [▶ 6])
when the controller is in ON and OFF mode.