Grundfos ALPHA1 Instructions page 22

INTERNALLY
18a
CONTROLLED
1 x 230 V - 15 %/+ 10 %
∽ 50/60 Hz
L
PE
N
42
EXTERNALLY
18b
CONTROLLED
PWM A PROFILE
1 x 230 V - 15 %/+ 10 %
∽ 50/60 Hz
IN
REF
OUT
L
PE
N
43