Levitronix PuraLev i100MU User Manual page 28

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
rd
3 party (UL or CE), is highly recommended.
1. Depending on the required hydraulic operational point (see Figure 11), the pump system requires
24V with a maximum power of 110 W. At a lower performance power supplies with smaller power
or bigger supplies to supply several pump systems simultaneously may be used. Consult
Figure 17 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 PLC Interface Signals
To operate the pump 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 Table 13).
The analog inputs and outputs are not galvanically isolated from
the controller electronics. To avoid ground loops and mal-
functions, use floating analog signals.
1. Power off the system
2. Connect the designated wires of the driver cable according to Table 13. Assignments and
functions of the I/Os can be changed with the controller firmware version (refer to according
firmware documentation).
3. Follow Figure 27 as reference for hardware configuration of the PLC in/outputs.
4. Protect the un-used wires against short-circuit to each other
4.3.5 Installation of RS485 Interface
For usage of the RS485 as a control or service interface, an initialization resistor network according to Figure
27 or Figure 28 shall be used in order to have a stable communication and avoid disturbance effects. The
RS485 protocol for master communication is available at Levitronix
For Service and Debugging purposes with the Levitronix
cable with integrated initialization resistors can be ordered according to Table 3. Do not use multiple master
devices at the same time.
PL-4075-00, Rev02, DCO# 20-275
! WARNING
CAUTION
®
®
Service Software and PC a USB/RS485 converter
User Manual for PuraLev
www.levitronix.com
on request.
®
i100MU
28