2 | Power connection and wiring
10 B1820023_en | Service handbook Lambdatronic H 3200 - T4e
2.1.6 Connecting a circulating pump to the core module
Different types of wiring must be implemented depending on the type of pump:
High efficiency pump with control line (PWM / 0-10V)
On high efficiency pumps with an additional wired control line, the speed control is implemented via the
additional connection for the PWM or 0-10V signal.
Pumpe 1
N
PE
L
LV
N
Netz
PE
L
AO-P1
PWM
0-10V
r Connect the power supply for the high efficiency pump to output “Pump 1” of the core module
r Connect the PWM cable of the high efficiency pump to the corresponding “PWM / 0-10V” port
Ä Make sure that the cables are configured correctly (polarity) in accordance with the connection diagram of
the pump!
r Set control of the pump in the relevant menu to “Field pump / PWM” or “Field pump / 0-10V”
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