Honeywell BCU 370 - Page 62

BCU 370 · Edition 01.19 62
Parameters
Parameter 32 = 1: when bit 7 is activated, the butterfly
valve moves to the Low position. For this purpose, ter-
minal 25 is wired to a fourth limit switch in the actuator.
r
25 26 27 28 29 30 31 32
M
90° ➔ 0 0 ➔ 90°
Min
Definition of the modulation range following
controller enable
BCU..B13 with three-point step control function
Valve position Output byte
Upper end position Open Bit 6
Lower end position Closed Bit 7, parameter 32 = 0
Lower end position Low
Bit 7, parameter 32 = 1,
terminal 25 wired to separate limit
switch
Lower end position Ignition Bit 7, parameter 32 = 2