12
Rittal roof-mounted fan
4. Electrical connection
4.1 Connecting the power supply
4.1.1 Notes on electrical installation
◾
When performing the electrical installation, it is important to
observe all valid national and regional regulations as well as
the provisions of the responsible electrical supply company.
–
The electrical installation must only be carried out by a qual-
ified electrician who is responsible for compliance with the
existing standards and regulations.
4.1.2 Connection data
–
The connected voltage and frequency must correspond to
the values stated on the rating plate.
–
The electrical installation and any repairs may only be carried
out by authorised specialist personnel.
◾
Use only original spare parts!
◾
Install the pre-fuse cited in the Technical Specifications (cir-
cuit-breaker or slow fuse) to protect from short-circuits.
–
If several fans are operated on a single pre-fuse, observe the
total connected load.
–
The roof-mounted fan must be connected to the mains via
an all-pole disconnecting device to overvoltage category III
(IEC 61058-1).
4.1.3 Overvoltage protection and supply line load
–
The unit does not have its own overvoltage protection.
–
Measures must be taken at the supply end by the switch-
gear manufacturer or operator to ensure effective protection
against lightning and overvoltage.
–
The units are classified as overvoltage category III. The mains
voltage must not exceed a tolerance of ±10%.
4.1.4 PE conductor connection
–
The PE conductor must be connected to the PE conductor
system of the overall system.
4.1.5 Installing the power supply
◾
Remove the mains connector from the packaging and con-
nect to the mains as shown in the connection diagram.
–
The connection terminal supplied allows the connection of
cable cross-sections of 0.5 to 4 mm².
–
A smaller pilot wire (section 4.2) may be selected (min. 0.34
mm²).
–
In accordance with NFPA 70 (NEC), only copper conduc-
tors must be used to connect the supply cable to the mains
connector.
–
If no wire end ferrules are used, strip the individual wires by
max. 9 mm (observe the applicable clearances and creepage
distances).
◾
Connect the connector to the roof-mounted fan from below.
Connection
Pin
Function/assignment
L
Power supply
N
Neutral conductor
PE
PE conductor
+10 V
1
Voltage output 10 V max. 1.1 A,
galvanically isolated, not short
circuit-protected
0...10 V/PWM
2
Control input 0…10 V or PWM,
galvanically isolated, impedance
100 kΩ
GND
3
GND connection of the control
interface
Speed
4
Speed output Open Collector, 1
pulse per revolution, galvanically
isolated
Tab. 2: Connection designations
Summary of Contents for SK 3138000
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