Table of Contents
Advertisement
6.5
Assembly instructions
Always have assembly, installation, repair and maintenance of ventilation systems carried out by qualified personnel
trained for this purpose.
Rules to be adhered to for setting up and installation
The following safety relevant rules have to be adhered to when planning the use of a ventilation system and its set-up and
installation:
• The Provincial Building Ordinance of the provinces
Accident prevention regulations Adhere to the general accident prevention regulations (APR), the APR for power operated
windows and doors, and the installation rules in your country.
Caution:
If internal coverings are removed the live current parts are exposed.
Guidelines for mounting / installation
•
the MotorController should be mounted on the wall in such a way that there is free access for service inspections
•
adhere to the installation instructions and your local energy providers
•
select the place of installation such that free access is guaranteed for maintenance purposes
•
select cables according to regulations in this instruction - take the calculation of the actuators supply cable lengths into account
when laying the cables
•
connect the cables in accordance with the drawings provided by the manufacturer
•
route the cables in the building according to the regulations in this instruction
•
check all system functions
Cable dimensioning
7
Cables should be routed in compliance with applicable regulations.
7.1
Max. cable length
The maximum permitted cable lengths from the MotorController to the actuators, taking into account the cable cross-section, are
shown in the following table.
7.1.1 Formula for calculating max. actuator cable length
Max. cable length = permitted voltage drop 2V (UL) x copper's conductivity (56) x cable cross-section in mm
For ±24V standard actuators, the cable cross-section may not be less than 0.75 mm
formula.
Maximum actuator cable length: Always measured from the MotorController to the last junction box + actuator cable
Permissible max. voltage drop in the line: 2 Volt
Total actuator current: The sum of all the connected actuators max. current consumption per motor line
Note: do not use the PE wire / green/yellow wire in the actuator cable!
Example
Max. actuator cable length with cable cross-section of 0.75mm
7.1.2 Max. cable length – ±24V standard actuators
The actuator cable must have 2 wires minimum.
Cable-
cross-section [a]
Total
actuator current [l]
1A
2A
3A
4A
5A
6A
Max. total actuator current per motor line in amperes (l) x 2
±24V standard actuators
The PE wire/the green-yellow earth wire must not be used
3-wire
3-wire
0.75mm²
1.50 mm²
42m
84m
21m
42m
14m
28m
11m
21m
8m
17m
7m
14m
2
, irrespective of the result of the above
2
and 2A current consumption: (2 x 56 x 0.75) : (2 x 2) = 21m
5-wire
3-wire
1.50 mm²
2.50 mm²
2-wire
parallel
168m
140m
84m
70m
56m
47m
42m
35m
34m
28m
28m
23m
7
2
(a)
5-wire
3-wire
2.50 mm²
4.00 mm²
2-wire
parallel
280m
224m
140m
112m
93m
75m
70m
56m
56m
45m
47m
37m
Advertisement
Table of Contents
