User Manual for PuraLev
®
iF100SU
www.levitronix.com
PL-4079-00, Rev00, DCO# 21-271
4.3.3 Installation Instructions for Power Supply
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 Figure 8), the flow control system
requires 24VDC with a maximum power of 100 W. At a lower performance power supplies with
smaller power or bigger supplies to power several flow control systems simultaneously may be
used. Consult Figure 15 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 the flow or speed. The
digital and analog outputs can be used to monitor the pump status and operating parameters (see Table 15).
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 Table 15. Assignments and
functions of the I/Os can be changed with the controller firmware version (refer to according
firmware documentation).
3. Follow Figure 24 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 Figure
24 or Figure 25 shall be used in order to have a stable communication and avoid disturbance effects. The
RS485 Modbus RTU 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 Table 4. Do not use multiple master
devices at the same time.
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