Pfeiffer Vacuum A 1204H, Operating Instructions Manual

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42
Advanced settings
AUTO. SOFT PUMPING The pump controls either a valve incorporating the “soft pumping” function or two valves
in parallel. The opening and closing of the « soft pumping » valve is controlled automat-
ically by the pump when it starts or stops.
The « soft pumping » valve opening cycle starts 3 seconds after the message RUNNING
FIXED SPEED is displayed on HHR and stops when a pump stop order is launched: the
valve closes 3 seconds before the pump stops.
The opening delay of « soft pumping » valve can be set in menu [SETTING] [VALVE
SOFT P] [DELAY] (see 8.2) .
MANU. SOFT PUMPING The « soft pumping » valve opening/closing cycle is manually controlled when the pump
is stopped or running. An opening delay can be set in menu
[SETTING] [VANNE SOFT
P] [DELAY] (see 8.2) .
The « soft pumping » valve can be controlled:
– from HHR with AUX button (see 4.3) : in this case, J1-S1 contact and J1-S7 contact-
must be closed.
– from J1 remote control connector (see 8.3) : in this case, the contact J1-S1 is opened,
J1-S7 is closed. Open the contact J1-S6 to open the valve, and close it to close the
valve.
– from serial link (see Serial link Operating instructions) : in this case, J1-S7 contact
must be closed.
7.8 Motor power monitoring
The power of each of the functional block motors and/or Roots is measured. Pre-warn-
ing, warning and alarm thresholds delays associated with them can be set for each motor
[SETTING] [POWER] [FB POWER]/[R1 POWER] (see 8.2) . If the measured power ex-
ceeds the threshold, a defect appears after the expiry of the delay. If the fault is set to
[DISABLED] , there is no threshold to configure and the fault is not managed.
Isolation valve
Pompe
AUX
Time
1
0
START STOP
3s
AUX AUX AUX AUX
AUX
Time
3s 3s
START STOP
1
0
T. soft-P
Isolation valve
Soft-P valve
Pump
Isolation valve
Soft-P. valve
Pump
Time
START STOP AUX AUX
1
0
AUX AUX AUX AUX
T soft-P
3s
T soft-P T soft-P T soft-P
Power
Time
T. pre-warning
Alarm threshold
Warning
threshold
Pre-warning threshold
Alarm m
pump stopped
T. warning T. alarm
No message
Pre-warning message
Warning message