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TSUM - 3-021 A-Frame Fold (Park) (122) Part 2
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TM-5-5420-279-23 Dry Support Bridge (DSB) (NSN
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TSUM - 3-023 Emergency Stop Failure
TM 5-5420-279-23
TSUM - 3-022 PLC Startup Conditions
PLC powered
Ctr set to zero
No
Ctr equal to or greater
than 3?
4-Pos
Sw Set to 2 or 4
No
AND
Yes
E-Stop OK
AND
Ctr=0
2s delay
Yes
2s delay
Enable high idle
Ctr incremented to 1
Ctr incremented to 4
No
No
Ctr equal to or greater
Ctr equal to or greater
than 1?
than 4?
Yes
Yes
100m s delay
2s delay
Enable PTO sol
Enable tail lift
(KA6)
(KA3)
Ctr incremented to 2
Ctr incremented to 5
Ctr
equal to or
No
Ctr equal to or greater
greater than 5
than 2?
AND
No
4-Pos Sw set to 2
AND
Relax Pins
Yes
In?
2
5s delay to build
system pressure
Yes
2s delay
Enable neutral lockup
1
(KA12)
Enable launcher supply (KA1)
&
neutral lockup (KA12)
Ctr incremented to 3
Ctr incremented to 6
Notes
1
Process continues regardless of whether system has built up pressure
2
Actual logic input to PLC is (NOT (Relax Pins Out)) as opposed to (Relax Pins In)
Launcher system enabled
Abbreviations: Ctr = PLC 0 internal increm ent counter, s = second, m s = m illisecond,
4-Pos Sw = 4 Position Switch, KA1, KA3, KA6 & KA12 are relays in the Interface
Enclosure. PLC = Programm able logic controller. PTO Sol = Power take off

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