BCU 370 · Edition 01.19 14
PE
BCU 370
25 26 27 28 29 30 31 32
L1 (L1)
N (L2)
3PS
321
16
674812 1115 13
S3 S4
S11
S10
0
90°
M
IC 20
PE
S1S2
r
90° ➔ 0
0 ➔ 90°
90° ➔ 0
0 ➔ 90°
Function
3.1.2 BCU 370 with actuator IC 20
The “closed contact” (90° ➔ 0) of the external three-
point step controller (3PS) can be connected to termi-
nal 26 or 27.
Terminal 26: the controller operates between the open
and ignition positions.
Terminal 27: the controller operates between the open
and closed positions.