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The A5X microprocessor control unit is used to control a softener.
A 5-key keypad on the front panel gives access to the programming of the various sequences necessary for
the operation of the softener and to program the regeneration delays.
It is delivered with an external transformer delivering very low voltage currents necessary for the operation
of electronics and regenerative solenoid valves.
It will be necessary to bring a 230-volt single-phase electric wall socket (European standards) close to the
cabinet (2.5 meters maximum) (see also the technical operating conditions).
ELECTRIC CABLING
CAUTION :
Electric connections to the A5X-CONTROL unit must be performed using a 0.5 or 0.75 mm²
flexible cable. Carefully read the paragraph «Control unit description» which indicates the type of cable
to be used.
CONTROL UNIT DESCRIPTION
Meter pulse input
3 wires
2
J9
J10
J11
NO NF C
Not
used
Alarm
feedback
Description from left to right
Input =
Terminal N°
Type of cable
J9
2 x 05 or 0,75 mm2 or 3 x 0,5 or
0,75 mm2 according to the desired
contacts
J10
Technical manual BWT PERLA PRO XXL - code P0011058 - Rev 10 - 23/11/2021
36
ELECTRONIC UNIT
2 wires
1
J23
J12
J131
Power supply
solenoid valves
Connecting terminal strip
J132
J15
J16 J17 J18 J19
Low voltage
secondary
transformer supply
Output =
Description
A5X-CONTROL Unit alarm transfer in case of:
- Power supply failure
- Salt low level (optional)
Power off from left to right:
NO = Normally open dry contact
NF = Normally closed dry contact
C = Common
Power on from left to right:
NF = Normally closed dry contact
NO = Normally open dry contact
C = Common
Not used
J21
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