Functions
8.9 2-/3-wire control
Control Units CU240S
Operating Instructions, 11/2006, A5E00766042B AA
8-41
8.9 2-/3-wire control
Data
Parameter range: P0727
P0701 … P0713
P0840, P0842, P1113
Warnings: -
Faults: -
Function chart number: -
Description
Note
Automatic restart function
When a 2-/3-wire control methods is selected, the automatic restart function (P1210) is
disabled. If the automatic restarted function is required, the user must specifically enable this
function. For further details, please see the Parameter List.
The different types of 2-/3-wire control are enabled using parameter P0727 and selecting
one of the following options:
Default value
● P0727 = 0: Siemens standard control (ON/OFF1, REV).
Other settings
● P0727 = 1: 2-wire control (ON_FWD, ON_REV)
● P0727 = 2: 3-wire control (FWDP, REVP, STOP)
● P0727 = 3: 3-wire control (ON_PULSE, REV, OFF1/HOLD)
When any of the control functions are selected using P0727, the settings for the digital inputs
(P0701 … and P0712, P0713 for AI used as DI) are redefined as shown in the table below.
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