Mettler Toledo MT Operations Instructions download pdf (Page 44)

Appendix

44 Operating instructions 22012836B 09/08

IND690-Fill

6.2 Sequence chart

6.2.1 Below-level application

NOZZLE CONTROL OFF and DRIP PAN OFF

OUT1 OUT3 OUT4 OUT5 OUT6 OUT7 OUT8 IN1 IN2 IN4

Fine feed Coarse

feed

Poor Accept-

able

End of

dispens-

ing

Start/

output 7

Ready Nozzle Start

(PLC)

Confirm

Target value entered

Pulse output started, nozzle

moves down, sequence

monitoring active

Nozzle down, PLC outputs start

pulse, coarse feed switched on

Limit 1 reached: coarse feed

switched off, fine feed switched on

Limit 2 reached: fine feed

switched off, nozzle moves up

Nozzle up, wait for stabilization of

weighing platform

Stabilization of weighing platform,

feed result evaluated and printed

out

Movement > 30 or confirmation

Ready for next dispensing

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