Omron MS4800E, Руководство по эксплуатации

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6
Operating Modes
Section 4-2
4-2 Operating Modes
System operating modes determine the start-up and operating behavior of an
MS4800 system. Operating modes definitions rely on the operating states
presented above. Operating mode selection may be performed via the config-
uration switches on the MS4800 transmitter and receiver.
Note If internal alarms are detected by the system during power-up or operation, it
will enter the Alarm state with its safety outputs in the OFF state.
4-2-1 Automatic start
The MS4800 will power-up with its safety and auxiliary outputs OFF, and if the
detection zone is not obstructed, enters the MACHINE RUN state. In this
state, when an object is sensed entering the detection zone, the MS4800 sys-
tem will change from MACHINE RUN to MACHINE STOP and remain in this
state until the obstruction is removed. Once the detection zone is clear, the
MS4800 system will automatically change from MACHINE STOP to MACHINE
RUN.
4-2-2 Start/Restart Interlock
The MS4800 will power-up with its safety outputs off end enter the INTER-
LOCK state if the detection zone is clear (or the fixed blanking pattern is satis-
fied) and no alarms are detected. To initially enter the MACHINE RUN state
the operator must press and release the Start button. Once in the MACHINE
RUN state, when an object is sensed entering the detection zone, the system
will change to the MACHINE STOP state. When the detection zone is cleared,
the system will not automatically change to MACHINE RUN but enter the
INTERLOCK state instead. The operator must always press and release the
Start button to enter MACHINE RUN. If the detection zone is not clear the
Start button will have no effect.
Note The definitions above mention a start button. See
SECTION 11 Connection to
the Machine Control Circuit
for wiring of the start button.
4-3 MS4800FS Cascaded Series
The MS4800 series safety light curtain is available in a "cascaded" version,
referred to as the MS4800FS series. The MS4800FS series allows multiple
transmitters/receivers to be "daisy-chained" in series. This type of arrange-
ment permits the MS4800FS to guard multiple areas of a machine.
4-3-1 MS4800FS Requirements
The MS4800FS is offered in protective heights ranging from 280 mm to
1800 mm for 14 mm resolution and 280 mm to 2120 mm for 30 mm resolu-
tion.
• An MS4800FS system has a maximum size limitation based on the num-
ber of beams. A master (first) segment cannot exceed 180 beams and the
total of the combined segments cannot exceed 256 beams.
• A cascaded slave segment cannot exceed 128 beams.
• An MS4800FS system may have up to four daisy-chained segments. As
long as the total number of beams does not exceed 256.
• The interconnect cable length limitation between any two segments is in
total max.10 meter for transmitter and receiver.