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Access to controller PCB selectors and jumpers
Inside the electrical cabinet is the PCB controller, which has some selectors and jumpers through which
it is possible to change the factory settings of the controller:
Jumper
Functionality
JP1
Enable Modbus communication (Control of the unit from the BMS)
JP4
In Modbus networks, defi ne last unit in the network (end of line)
JP6
Type of verifi cation of fans status
X31
Origin fan speed control (Command, external probe, etc.)
Functionality of the selectors and jumpers on the controller board (inside the electrical cabinet).
9.4.1. Modifi cation of predefi ned speeds
Low Speed (Selector 1):
Setting of the supply fan low speed. Between 2,1 and 3,5V with increments of
0,2V for each position of the selector. Default setting 3.5V (Selector position F).
Medium Speed (Selector 2):
Setting of supply fan medium speed. Between 3,5V and 6,5V with incre-
ments of 0,2V for each position of the selector. Default setting 6V (Selector position D).
High Speed (Selector 3):
Setting of supply fan high speed. Between 6,5V and 9,5V with increments of
0,2V for each position of the selector. Default setting 9,5V (Selector position F).
Balance (Selector 4):
The predefi ned setpoints with selectors 1,2 and 3 will be directly those applied to
the supply fan, while the extract fan may work with a certain unbalance regarding the supply fan. This
unbalance is defi ned through the selector 4, as a percentage between -30% and 30% with increments of
5%. The unbalance values assigned to each position of the selector are the following ones:
