COMECO SCRM1 User manual
COMECO Inc., P.O.Box 378, Plovdiv 4000, BULGARIA, tel: +359 32 646523, 646524, fax: 634089
SCRM1
OPERATION MANUAL
Please read this Operation Manual before mounting and operating!
Save the Manual for future references!
v1-1-07.14
RPM CONTROLLER
FOR SINGLE-PHASE AC MOTORS
Overview 2
The RPM controller SCRM1 is designed
to control the speed of single-phase
AC motors up to 5A/230VAC. It employs
the principle of 'phase angle control'
from 25 to 180 degrees, adjustable
through a thumbwheel on the front panel
and applied to an internal power triac.
SCRM1 can switch up to 500 VA AC motor
of a fan or other industrial appliance,
connected to the device output.
A load-current sensing can be used
for keeping the motor speed relatively
constant and independent of the load.
Mounting and Wiring
Prior to wiring the controller,
turn the mains supply off!
Mounting
SCRM1 is designed for DIN-rail mounting.
♦Insert the upper rail edge
into the upper plastic groove
of the rail-installing mechanism
on the back side of the unit.
♦Press the unit towards
the lower rail edge
until the moving part
of the installing mechanism clicks.
♦Ensure the unit is firmly set on the rail.
Wiring
♦Connect the unit to the AC motor.
♦Connect the right power supply voltage
for your device (see 'Specifications').
Waste Disposal
Do not dispose of
electronic devices
together with
household waste
material!
If disposed of within European Union,
this product should be treated
and recycled in accordance with the laws
of your jurisdiction implementing
Directive 2012/19/EU on waste electrical
and electronic equipment (WEEE).
Operating 3
Starting-speed adjustment
is imperative with
each change of the motor
connected to your SCRM1!
Starting-speed adjustment
♦Ensure the power supply is off.
♦Turn the front-panel thumbwheel
counterclockwise to its end position (0%).
♦Pull up and remove
the black thumbwheel knob
from the front panel.
♦Press one of the plastic side locks,
sticking up from the box base,
and draw out the unit cover.
♦Find the 'ZERO' potentiometer
in the upper part of the PCB and, using
a screwdriver, turn the potentiometer
counterclockwise to its limit.
♦Turn the power on.
♦Slowly turn 'ZERO' clockwise
until the motor starts and reaches
the desired starting speed.
♦Put the box cover back
and mount the knob on its place.
Speed adjustment
Turn the front-panel thumbwheel
to set the desired speed (RPM)
within the 0% (starting speed)
to 100% (maximum speed) range.
Declaration of Conformity
The undersigned hereby declares,
on behalf of COMECO Inc., that this
RPM controller model SCRM1
has been manufactured in compliance
with standards EN 61010-1 and EN 61326-1,
and meets the requirements
of Directives 2004/108/EC and 2006/95/EC.
Krasimir Darakchiev, CEO
COMECO Inc.
Specifications 4
Power Supply
Consumption
Motor Power Ratings
Minimum Holding Current
Maximum Leakage Current
Critical Rate of Current Rise dI/dt
Critical Off-state Voltage Rise dV/dt
I2t Value for Fusing
Motor Speed
Speed Control
Load-current Sensing
Mains Voltage Compensation
Temperature Drift
Ambient Temperature / Humidity
Storage Temperature
Protection Class
230 VAC ± 10%, 115 VAC ± 10%
less than 2.5 VA
0.5...5 A, max. 500 W
50 mA
2 mA
50 A/μs
1000 V/μs
78 A2s at t = 10 ms
0...100%
with triac, phase angle 25...180 °
≈10% of set-point angle per 1 A
≈1% of set-point angle per 10 V
max. 0.05% for 1 °C
-10…40 °C / 0…85% RH
-30…80 °C
IP40
Warranty and Support
………………………….
article number
………………………….
serial number
………………………….
manufacturing date
QC check mark …….……(passed)
(stamp)
88 Slavyanska Str.
P.O.Box 378
Plovdiv 4000, BULGARIA
tel: +359 32 646523, 646524
fax: +359 32 634089, 646517
e-mail: support@comeco.org
QD-8.2.4-WC
Warranty
COMECO warrants this product
to be free from defects in materials
and workmanship for 2 years. If your unit
is found to be defective within that time,
we will promptly repair or replace it.
This warranty does not cover accidental
damage, wear or tear, or consequential
or incidental loss. This warranty
does not cover any defects caused
by wrong transportation, storage, installation,
or operating (see 'Specifications').
Technical support
In the unlikely event that you encounter
a problem with your COMECO device,
please call your local dealer or contact
directly our support team.
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