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D877 MGB Rev01 HE250.docx
3.7
Control of the cycle of monitoring PNP1 signal
-
1/3 - SIGNALS WAITING (DSP= flfl)
Ready signal RDY from the card to the waiting framework commands.
-
2/3 - OPERATION ACTIVATION (DSP= flfl)
The signals in parentheses are used together or alternatively as in normal maneuvers.
-
3/3 - OPERATION STOP (DSP=
flfl
)
3.8
Verification of the supervisory function of monitoring PNP1 signal
With the P461 parameter it is possible to lock them always PNP1 the signal at high level (P461 = 1) or low
level (P461 = 2). The block of the the signal allows to check error detection from the electrical control panel.
Only with the parameter P461 = 0 the PNP1 signal switches according to the normal operation.
It is possible to change the value of parameter P461 by setting on the SCH001 board the selector RSW = 6
(DSP=C-) and pressing the S1 button until the display shows Cu, to set P461 = 1 or, by pressing the S2 button
until that Cd appears on the display, to set P461 = 2.
3.8.1
Always check ON signal
Change the parameter P461 to the value 1.
Perform a maneuver in any direction.
At the end of the maneuver, the control system, must indicate an error state Error1 corresponding to the signal
PNP1 (Error 2).
Reset on the panel the error, re-start the lift.
