Instructions For Electrical Installation - Levitronix LEVIFLOW LFIF Series User Manual

LFIF-06
Colors/Designation
Max. 30V / 10mA Blue: Digital Output
Open
Collector
4-20mA /
0-20mA
Green: Analog Output
Orange: RS485+
Yellow: RS485-
GND
Brown: Ground
Red: 24 VDC
Figure 5: Typical interface connection chart with LFE-E.1 (current output) and LFE-E.3 (voltage output)
Figure 6: Typical interface connection chart with LFE-E.2 (flow switch applications)

3.1.2 Instructions for Electrical Installation

Hazardous voltage may be present.
Always isolate the electrical power supply before making or changing
connections to the unit.
Flammable gases.
Do not place the integrated flowmeter next to flammable gases.
PL-4511-00, RevA, DCO# RD
Cable Wires
Example of User
Interface Circuit
LFE-E.1
Relais
R > 3 kOhm
R < 500 Ohm
R = 510 Ohm
+5V
Tool
R = 120 Ohm
Control
R = 510 Ohm
Personal
RS485/USB Cable
Computer
with Termination
(Service)
AC/DC Supply
24 VDC
LFIF-06
Max. 30V / 10mA
Open
Collector
4-20mA /
0-20mA
GND
WARNING
!
WARNING
!
User Manual for LEVIFLOW
Max. 30V / 10mA
Open
Collector
24V
0-20mA
GND
GND
Example of User Interface Circuit
Cable Wires
Colors/Designation
LFE-E.2
Blue: Digital Output
R > 8.3 kOhm
Green: Analog Output
R = 510 Ohm
Orange: RS485+
R = 120 Ohm
Yellow: RS485-
R = 510 Ohm
Pull-Up resistance RS485/USB Cable
with Termination
4.7 kOhm is integrated in
cable LFE-E.2.
Brown: Ground
AC/DC Supply
Red: 24 VDC
®
LFIF-06 Flowmeters
www.levitronix.com
Cable Wires
LFIF-06 Example of User
Colors/Designation
Interface Circuit
LFE-E.3
Blue: Digital Output
0-10V
Green: Analog Output
R > 100 kOhm
R = 510 Ohm
Orange: RS485+
R = 120 Ohm
Yellow: RS485-
R = 510 Ohm
Current-voltage resistor
20mA to 10V conversion RS485/USB Cable
with Termination
500Ohm/0.5W integrated
in cable LFE-E.3.
Brown: Ground
Red: 24 VDC
Safety
Switch
Relais
24V
+5V
Tool
Control
Personal
Computer
(Service)
GND
24 VDC
Relais
R > 3 kOhm
24V
+5V
Tool
Control
Personal
Computer
(Service)
GND
AC/DC Supply
24 VDC
8