Honeywell BCU 370 - Controlling the BCU Via; Profibus Dp; Controlling the BCU and the Butterfly Valve Via

BCU 370 · Edition 01.19 8
Application
1.1.4 Controlling the BCU via
PROFIBUS DP
The BCU 370..B1 issues the enable
signal to the temperature controller
for capacity control. The tempera-
ture controller then controls the
butterfly valve directly.
1.1.5 Controlling the BCU and the
butterfly valve via PROFIBUS DP
The BCU 370..B13 receives posi-
tioning information for the butterfly
valve from the temperature control-
ler via the PROFIBUS DP and acti-
vates the butterfly valve following
controller enable.
BUS
L1,
L1,
26
28
25
BCU 370..B1
M
ϑ
ϑ
Profibus DP
29 31 3230
90° ➔ 0 0 ➔ 90°
3PS
PLC
Temperature
controller
BUS
L1,
L1,
BCU 370..B1-3
M
ϑ
ϑ
Profibus DP
90° ➔ 0 0 ➔ 90°
3PS
29 30 31
32
Temperature
controller
PLC