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4 Installation
4.1 Electrical Installation
Protective Earth on Ex-Model
Bearingless Fans placed in Ex classified locations must be connected to
protective earth, which must be done with the earth wire according to Table 5.
4.1.1 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 usage of an inadequate AC/DC power supply, mains voltages
may be present (even if the system is designed for 48 VDC). The usage
of a galvanically separated power supply, which is certified by a 3
(UL or CE), is required.
•
Power requirement: See section 3.1 for the power consumption of the bearingless fan. Depending
on the operating point, one power supply may be used to power several bearingless fans
simultaneously, or a supply with a lower power rating may be used. If other power supplies are used
than the ones tested by Levitronix
(acceleration and deceleration of the fan up to maximum rotational speed).
•
Connection: Connector type TE D5200S 1-179958-3 is used as the power connector of the fan. Use
TE D5200S 1-353047-3 to connect the power supply (cable adapter available as accessory). Make
sure pin allocation is according to Table 5 and connect the cable shield to earth.
Pin
Wire Color
Description
1
Red
Power +
2
Black
Power -
3
Yellow-green
Cable shield
4.1.2 Installation of PLC Interface Signals
To operate the bearingless fan with a PLC, a minimum set of one digital input and one analog input is needed
for speed control, or a set of two digital inputs and two analog inputs for process (pressure or flow) control.
The digital and analog outputs can be used to monitor system status and operating parameters (see Table 6).
The analog inputs and analog and digital outputs are not
galvanically isolated from the motor electronics.
•
Connection: Connector type TE D1200 1-1827864-6 is used as the PLC connector of the fan. Use
TE D1200 1-1903131-6 to connect the tool control (cable adapter available as accessory). Connect
the desired interfaces to the respective pins according to Table 6. Figure 14 provides a reference for
hardware configuration of the PLC inputs and outputs.
PL-3505-00, Rev00, DCO# 21-249
!
WARNING
WARNING
!
®
, it is highly recommended to test these under dynamic conditions
Levels
+ 48 VDC ± 10 %
GND / earth
GND / earth
Table 5: Configuration of power connector
Connector type: TE D5200S 1-179958-3
CAUTION
User Manual for BFS-i10
www.levitronix.com
rd
party
Notes
Option + 24 VDC ± 5 % (reduced performance)
Internally connected to cable shield
To be connected to earth
13
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