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PCP VOLUMETRIC PUMP DRIVE
The drive has been designed to perform all the dispensing functions necessary for a PCP pump,
these functions can all be parameterized via Modbus TCP IP, without this communication it will be
possible to use the drive with only one static data set.
By using the inputs or variables via Modbus it is possible to activate the following functions in the
drive:
Enable (Power Enable)
With input 1 it is possible to couple the pump motor, if the power supply is missing or the pump is
physically disconnected, the drive will give the power timeout alarm.
5.3 Drive logic
Using SSP 1 and SSP 2 input, it is possible to control the electronic disconnector integrated into
the drive with both 24 V signals and to supply the power stage of the drive.
5.1 Electronic power disconnector
The drive prepares a connection for the differential encoder signals, it is therefore possible to
connect the encoder line driver directly to the drive. It is possible to power the encoder directly
with 5V present on terminal board M2.
5.2 Encoder signals
Jog Dispensing
With input 2 it is possible to activate the pump to dose at constant speed, by turning off the
command the pump will stop immediately.
Predetermined dispensing
With input 8 it is possible to activate the dispensing of a set quantity, the input must be kept
active until the end of dispensing, the “End of dispensing” signal will then be activated when the
command is switched off.
Alarms reset
The designated input is input 9.
Suck back
The drive automatically performs the suck back (inversion of the rotation); whenever the controlled
pump stops, the direction of rotation is reversed with programmable speed and quantity.
INPUT
PIN
Description
IN 1
12
Enable
IN 2
27
Jog dispensing
IN 8
9
Predetermined dispensing
IN 9
10
Reset
