Control interfaces
53
8.3.3
Wiring of the digital outputs
These contacts open in the presence of a defect:
* Default setting
** Can be modified via Serial link (See
serial link operating instructions
)
This contact closes in the presence of a defect:
S2 (20-21) Pump Start/Stop
Contact closed: pump starts.
Contact open: pump stops.
This function is valid when REMOTE mode is validated: S1 contact open.
S3 (22-23) Roots Start/Stop
Contact closed: Roots starts.
Contact open: Roots stops.
This function is valid when:
– REMOTE mode is validated with S1 contact open
–
[DEFINITION][ROOTS CMD]
is
[ENABLED]
S4 (24-25) Nitrogen purge
Start/Stop
Contact closed: nitrogen purge starts.
Contact open: nitrogen purge stops.
This function is valid when:
– REMOTE mode is validated with S1 contact open
– coding wheel
S1
–
[DEFINITION][PURGE CMD]
is
[ENABLED]
S5 (26-27) Stand-by purge
Start/Stop
This function allows nitrogen consumption to be reduced by closing the
stand-by (4)
valve
in-
dependently of the purge valve when the equipment is not on a process. No purge warnings or alarms
are managed when the stand-by valve is closed.
Contact closed: N2 stand-by purge starts after a delay (time programmed by RS232
see
Serial link
Op-
erating instructions
).
Contact open: N2 stand-by purge stops.
This function is valid when:
– REMOTE mode is validated with S1 contact open
–
[DEFINITION][IDLE MODE]
is
[DISABLED]
–
[DEFINITION][PURGE CMD]
is
[ENABLED]
S6 (28-29) Opening/closing of in-
let valve
Contact closed: closing of inlet valve.
Contact open: opening of inlet valve.
This function is valid when:
– REMOTE mode is validated with S1 contact open
–
[DEFINITION][INLET VALVE]
is
[MANU VALVE]
– Inlet valve control authorization is validated: S7 contact closed
S7 (30-31) Authorization to close
or not the inlet valve
Contact closed: authorization to close the inlet valve.
Contact open: no authorization to close the inlet valve.
This function is valid when
[DEFINITION][INLET VALVE][MANU VALVE] is selected
.
This function is not related to contact S6 and enables to function independently in HHR or REMOTE
mode.
S8 (32-33) Warning Reset
If
[DEFINITION] [FAULT STORAGE]
is
[ENABLED]
, this input is used to reset this memorisation.
Contact
Function
Contact Function
1-34
Pump fail (pump running, valve opened, no warning)
2-3
Warning presence
4-5
Alarm presence
6-7
Roots running
8-9
Pump running and inlet valve opened
12-13
Pump in stand-by mode
14-15
Pump running (FB + Roots running)
16-17
Status of inlet valve
35-36
Motor temperature warning
37-38
Purge warning
39-40
Exhaust pressure warning
43-44
FB running
45-46
Pre-Warning* or Pump running (FB + Roots)**
Contact Function
10-11
Alert presence
Summary of Contents for A 1204H
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