4
This transformer speed-controller is designed to be used
in combination with an electric motor which is suitable
for speed control by means of a transformer.
The controller can control the speed of the motor
in 5 steps (level 1 - 2 - 3 - 4 - 5, both at single- and
3-phase).
Several ventilators (also with motors of different
ratings) may be connected to one controller. How-
ever the total load current must not exceed the no-
minal output current of the controller.
Applications
• Motor(s) for connection to the controller must be
suitable for transformer reduced voltage speed con-
trol.
• The total maximum current load of (all) the
motor(s) connected to the controller must not ex-
ceed the nominal output current of the controller.
Before beginning installation procedures, these installation
and operating instructions should be studied carefully.
The installation and operation should also be in accordance with
local regulations and accepted codes of good practice.
The maximum admissible ambient temperature
during operation is +40°C. When the controller is not
in operation, the maximum admissible ambient tem-
perature is –20°C to +60°C.
• The controller must be mounted vertically on to a
solid surface, alternatively it may be mounted to a
solid horizontal surface .
• The controller must not be mounted upside down.
The cable entries should point down.
• The controller must not be mounted directly under,
or on to the ceiling. To ensure adequate cooling, a
minimum distance of 5 cm is required around the
controller.
1. Remove the cover of the controller.
2. Mounting holes are provided on the inside back
panel of the enclosure.
3. On some of the plastic enclosures, the mounting
holes should be opened by knocking out the mem-
brane covering the mounting hole.
4. For the ease of mounting, the mounting plate (in-
side) may be removed from the enclosure. The con-
troller enclosure should be mounted using corrosion
resistant screws or bolts as required. Once secured
in position, the mounting screws or bolts should be
sealed to maintain the IP-rating of the enclosure, i e
IP 54.
5. Supply cable to the control cabinet must have at least
five wires (L1, L2, L3, N and PE).
All electrical connections should be carried out by
qualified and authorized electrician in accordance with
national and local regulations.
Before connecting the controller, please
ensure that the electrical supply has been
suitably isolated and cannot be switched on!
The nominal voltage of the controller must be suitable
for the electrical supply to which it will be connected.
The controller should be wired in accordance with the
wiring diagram supplied with the controller and mark-
ings on the terminals.
ENGLISH
GENERAL DESCRIPTION
OPERATING CONDITIONS
CONTROLLER LOCATION
INSTALLATION
ELECTRICAL CONNECTION
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