ADP200 Application PID-IMM User Manual Pag. 38 of 80
4.3.3 PID IMM: Pump direction of rotation
Gear pumps are able to generate pressure by rotating only in one direction. Wrong pump direction of rotation
can lead to pump damage. User must identify pump direction of rotation correctly.
When correct direction of rotation is unknown it is possible to follow this procedure:
1) Disable drive (usually bring the enable terminal of regulation board to low level is enough)
2) Set following parameters in CONFIGURATION menu :
• Ipa 11000 Control Selector = SPEED
Drive control will follow speed reference as from parameter Ipa 11064 Flow Ref Source on
REFERENCEs menu, neglecting pressure reference; by setting Flow Ref Source to “Digital
param”, speed reference can be locally set by Ipa 11056 Manual Speed Ref [rpm].
If actual pressure raises above pressure reference selected by parameter Ipa 11062
Pressure Ref Source on REFERENCEs menu, application will trigger an alarm; user can
set its own pressure threshold by setting Pressure Ref Source to “Digital param”, so that
pressure reference can be locally set by Ipa 11054 Manual Press Ref [bar].
• Ipa 11010 Pump Direction = NEGATIVE (affects Ipa 654 Speed ref invert src)
3) After setting flow and pressure reference for local control, set(in REFERENCEs menu):
• Ipa 11056 Manual Speed Ref = 20 rpm
• Ipa 11054 Manual Pressure Ref = 100 bar
In MONITORS menu:
• Check parameters Ipa 12006 SpeedFbk and Ipa 12008 PressureFbk on MONITORS menu (drag
& drop parameters in GF Express monitor view)
Figure 25 Monitor view di GF Express
4) Enable Drive
Motor will turn at -20 rpm. Wait some seconds, if pressure increases it means that selected direction
is correct, otherwise repeat same procedure starting from point 1) and changing the parameter Ipa
11010 Pump Direction to POSITIVE in CONFIGURATION menu
5) Disable Drive
6) Set Ipa 11000 Control Selector = ADP200 on CONFIGURATION menu, so that both pressure and speed
references are processed by application.
7) Set pressure reference and flow reference sources (Ipa 11054 and Ipa 11056 respectively) to final
assignment (analog inputs or fieldbus process data).
8) Save parameters (DRIVE CONFIGURATION \ Ipa 550 Save parameters)
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