User Manual for PuraLev
®
iF30SU
www.levitronix.com
PL-4078-00, Rev00, DCO# 20-228
27
4.3.3 Installation Instructions for Power Supply
!
WARNING
Hazardous voltage may be present.
Always isolate the electrical power supply before making or changing
connections to the unit.
In case of the usage of an inadequate AC/DC power supply, mains
voltages may be present (even if the system is designed for 24 VDC).
The usage of a galvanic separated power supply, which is certified by a
3
rd
party (UL or CE), is highly recommended.
1.
Depending on the required hydraulic operational point (see
), the flow control system
requires 24 VDC with a maximum power of 35 W. At a lower performance power supplies with
smaller power or bigger supplies to power several flow control systems simultaneously may be
used.
to get the power consumption depending on the flow.
If other power
supplies are used, than the one recommended by
Levitronix
, it is highly recommended to test
these under dynamic conditions (acceleration and braking of the pump rotor speed).
2.
Make sure that the polarity is correct, and that AC/DC power supply is off.
4.3.4 Installation of Flow Sensor
See
Section 4.4
4.3.5 Installation PLC Interface Signals
To operate the flow control system with a
PLC
the analog input can be used to set either the speed or the
process value (flow or pressure). The digital and analog outputs can be used to monitor the pump status and
operating parameters (see
).
CAUTION
The analog inputs and outputs are not galvanically isolated from
the controller electronics. To avoid ground loops and
malfunctions, use floating analog signals.
1.
Power off the system
2.
Connect the designated wires of the driver cable according to
Assignments and
functions of the I/Os can be changed with the controller firmware version (refer to according
firmware documentation).
3.
Follow
as reference for hardware configuration of the PLC in/outputs.
4.
Protect the un-used wires against short-circuit to each other
4.3.6 Installation of RS485 Interface
For usage of the
RS485
as a control or service interface, an initialization resistor network according to
or
shall be used in order to have a stable communication and avoid disturbance effects. The
RS485
protocol for master communication is available at
Levitronix
®
on request.
For
Service
and
Debugging
purposes with the
Levitronix
®
Service Software
and PC a USB/RS485 converter
cable with integrated initialization resistors can be ordered according to
. Do not use multiple master
devices at the same time.
