Basler BE1-11m, Instruction Manual

Page: 119 / 610

9424200996 21-1
BE1-11 m Incomplete Sequence (48) Protection
21 • Incomplete Sequence (48)
Protection
The incomplete sequence (48) element announces an incomplete sequence if the motor starts but does
not reach the running state before the time interval expires.
Element operational settings are configured on the Restart Inhibit settings screen in BESTCOMS
Plus ® . A
summary of the logic inputs and outputs and operational settings appears at the end of this chapter.
BESTCOMS Plus Navigation Path:
Settings Explorer, Protection, Motor, Incomplete Sequence (48)
HMI Navigation Path: Settings Explorer, Protection, Settings Group x (where x = 0 to 3), Motor
Protection, Incomplete Sequence 48
Element Operation
Note
The 48 element will not operate when Motor Start Detection is
configured for Contacts Only. Refer to Motor Configuration Settings in
the Configuration chapter for more information.
Trip
Assertion of the Starting output of the Motor Status logic element initiates a timer that begins timing to a
trip. The duration of the timer is established by the Time Interval setting. A Time Interval of zero (0) makes
the 48 element instantaneous with no intentional time delay. In BESTlogic ™ Plus , the Starting output can
be connected to other logic elements to annunciate the condition or control other elements in logic.
The Trip output becomes true if the time interval expires before the Running output of the Motor Status
logic element becomes true. In BESTlogic Plus , the Trip output can be connected to other logic elements
and to a physical relay output to annunciate the condition and to initiate corrective action. If a target is
enabled for the element, the BE1-11 m will record a target when the Trip output becomes true. See the
Fault Reporting
chapter for more information about target reporting.
If the Running output of the Motor Status logic element becomes true before the element time interval
expires, the timer is reset, no corrective action is taken, and the element is rearmed for any other
incomplete sequence occurrences.
Refer to the
BESTlogicPlus chapter for more information on the Motor Status logic element.
Element Blocking
The Block input provides logic-supervision control of the element. When true, the Block input disables the
element by forcing the Trip output to logic 0 and resetting the element timer. Connect the element Block
input to the desired logic in BESTlogic Plus . When the element is initially selected from the Elements view,
the default condition of the Block input is a logic 0.
Logic Connections
Incomplete sequence element logic connections are made on the BESTlogic Plus screen in
BESTCOMS
Plus
. The incomplete sequence element logic block is illustrated in Figure 21-1. Logic inputs
and outputs are summarized in Table 21-1.