Fig. 1 Wiring and connections
Fuse holder with a spare fuse
Minimum
speed
adjustment
trimmer
Operating
LED
indication
230 VAC
M
230 VAC
Fig. 3 Mounting dimensions - surface mounting
69
82
82
89
Fig. 4 Operational diagrams
STX
Vout, [VAC]
Maximum
speed
Minimum
speed
0
Position
External potentiometer value
OFF Switch ON
Fig. 2 Mounting dimensions - inset mounting
82
26
33
89
7
62
62
GB MOUNTING & OPERATING INSTRUCTIONS
STX | Electronic speed controller for single-phase voltage
controllable motors
The STX speed controller provides manual control of the rotational
speed of voltage controllable (230 VAC, 50 Hz) motors by varying
the supply voltage through phase angle control. Several motors
can be connected as long as the current limit is not exceeded.
Article codes
OUTPUT REGULATION FROM MAXIMUM TO MINIMUM
Rated current range, [A] Fuse (5*20 mm), [A]
STX 1,5
0,1—1,5
F-2,00 A-H
STX 2,5
0,2—2,5
F-3,15 A-H
STX 4
0,4—4,0
F-5,00 A-H
Intended area of use
• Manual control of the motor / fan speed in HVAC applications
• For indoor use only
Technical data
• Power supply: 230 VAC ± 10 % / 50 Hz
• Unregulated input / output: 230 VAC / max. 2 A
• Regulated output to motor(s)
• Minimum speed adjustment by trimmer: 80—180 VAC
• Speed control:
» STX – from maximum to minimum
• Enclosure:
» External: ASA, white-ivory (RAL9010), IP54 (according
to EN 60529)
» Internal: polyamide, white-ivory (RAL9010), IP44
(according to EN 60529)
• Operating ambient conditions:
» temperature: 0—35 °C
» rel. humidity: < 100 % rH (non-condensing)
• Storage temperature: -10—40 °C
Standards
• Low Voltage Directive 2006/95/EC
• EMC Directive 2004/108/EC: EN 61326
• WEEE Directive 2012/19/EU
• RoHs Directive 2011/65/EU
Wiring and connections (see Fig. 1 Wiring)
Power supply (230 VAC ± 10 % / 50 Hz)
Unregulated output (230 VAC / max. 2 A)
for connecting a lamp, valve ... or three-wire
motor connection; branched off after the
switch / input: to bypass switch
N
Neutral
Regulated output to motor
Connections
Cable cross section: max. 2,5 mm
2
MOUNTING INSTRUCTIONS IN STEPS
Before you start mounting the STX speed controller, read carefully
"Safety and Precautions". Then proceed with the following
mounting steps:
I.
For inset mounting
1. Disconnect the mains supply.
2. Remove the knob by turning it to the right, beyond the stop
end and then pull. Open the cover and unscrew the loose nut.
3. Do the wiring according to the wiring diagram (see Fig. 1)
using the information from section "Wiring and connections".
4. Mount the internal enclosure to the wall according to the
mounting dimensions shown in Fig. 2.
5. Turn on the mains voltage and controller.
6. Adjust the minimal speed and turn off the controller.
7. Mount the cover with the nut.
8. Push the knob in place at off position.
II. For surface mounting
1. Disconnect the mains supply.
2. Mount the external enclosure to the wall by dowels and
screws (not delivered). Consider the mounting dimensions
shown in Fig. 3.
3. Remove the knob by turning it to the right, beyond the stop
end and then pull. Open the cover and unscrew the loose nut.
4. Do the wiring according to the wiring diagram (see Fig. 1)
using the information from section "Wiring and connections".
5. Mount the internal enclosure into the external enclosure by
means of the delivered screws and washers.
6. Turn on the mains voltage and controller.
7. Adjust the minimal speed and turn off the controller.
8. Mount the cover with the nut.
9. Push the knob in place at off position.
Note: You can drill a hole (5 mm) at the bottom of the external
enclosure to take away condensed water.
OPERATING INSTRUCTIONS
The controller is to be used only with voltage controllable fans /
motors. You can connect several motors to the controller as long
as the current limit is not exceeded.
The motor used should be protected internally against
overheating.
The trimmer is adjusted so that the motor does not stop due
to mains voltage variations. The controller restarts after power
failure.
In case of faulty operation
Please check if:
• the right voltage is applied.
• all connections are correct.
• the machine to be regulated is functioning.
• the fuse of the controller is OK.
In case that the fuse has blown up, remove the knob by turning
it to the right, beyond the end stop and then pull. Open the
cover and unscrew the nut. Remove the fuse holder with the
help of a screwdriver. Replace the fuse. Mount all the parts
back in place.
Attention!
above; otherwise, loss of warranty will ensue.
Transport and stock keeping information
Avoid shocks and extreme conditions; stock in original packing.
Warranty information and restrictions
Two years from the delivery date against defects in
after the date of publication relieve the manufacturer of any
responsibilities. The manufacturer bears no responsibility for
any misprints or mistakes in this data.
Maintenance
In normal conditions this product is maintenance-free. If soiled,
clean with a dry or dampish cloth. In case of heavy pollution,
clean with a non-aggressive product. In these circumstances the
unit should be disconnected from the supply. Pay attention that
it is completely dry.
NL MONTAGE & GEBRUIKSVOORSCHRIFTEN
STX | Elektronische regelaar
De STX snelheidsregelaar voorziet u van een manuele controle
van de rotatiesnelheid van spanningsgeregelde (230 VAC,
50 Hz) motoren door het regelen van de voedingspanning.
Meerdere ventilatoren aansluiten is mogelijk zolang u binnen
de stroomlimiet blijft.