13
Digital Pump Control Module
Series PQDXXA-Z10
Installation and Setup Manual
Bulletin HY30-3255-INST/UK
Parker Hannifin Manufacturing Germany GmbH & Co. KG
Pump & Motor Division Europe
Chemnitz, Germany
Sensor signals
Displacement Transducer (cable 1)
The displacement transducer (LVDT) must be
connected to the power supply (LVDT connector
PIN 2 to +24 V), to the displacement signal input
(LVDT connector PIN 1 to module PIN 6) and to
the module 0 V (LVDT connector PIN 3 to module
PIN 9 / 11).
The displacement transducer signal is 9 V
(7.5 V at frame size 1 and 2), when the pump
is at dead head and between 7.5 and 4 V
(depending on frame size and nominal displace-
ment) at full stroke. The connection to the displace-
ment transducer is checked by the modules cable
break monitoring.
A sensor signal below 1 V or above 10 V will lead
toashutoffofthepoweramplierstagesandwill
force the pump to dead head.
The LVDT connector has to be assembled
carefully to avoid the danger of a short circuit
in the connector (i.e. the exact position of the
lagging ring is to be checked). A electrical
short in the connector can cause irreparable
damage to the electronic module.
Some electronics supply companies offer pre-
fabricated cables with the M12x1 connector
molded to the cable. These cables avoid the
risk of mis-assembly, offer a higher protection
against ingression of moisture or oil and are
available in many different length options.
Please note that the displacement signal is a
voltage signal and the voltage drop is propor-
tional to the cable length. The length of the
cable should only be as long as necessary.
cable 1: 4 x 0,5 mm², shielded, max. 50 m long
connector: round type M12 x 1; 5-PIN angled version
Lagging ring must
be installed to avoid
damage!
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