F&F CKF-318 TRMS User manual
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CKF-318 TRMS
Phase loss and phase
sequence sensor
The CKF-318 phase loss and phase sequence microprocessor
sensor without neutral wire is designed to protect electric motor
powered from the three-phase network in following cases:
»voltage loss in at least one phase;
»voltage drop in at least one phase below 320 V;
»voltage increase in at least one phase above 480 V;
»voltage asymmetry between phases above the set value;
»incorrect phase sequence.
The sensor correctly measures the true rms value of the
voltage (TrueRMS), even when the power supply voltage
is (disturbed) distorted.
Purpose
F&F Filipowski sp. j.
Konstantynowska 79/81, 95-200 Pabianice, POLAND
phone/fax (+48 42) 215 23 83 / (+48 42) 227 09 71
Do not dispose of this device in the trash along with other waste!
According to the Law on Waste, electro coming from households free of charge and can
give any amount to up to that end point of collec� on, as well as to store the occasion of
the purchase of new equipment (in accordance with the principle of old-for-new, regard-
less of brand). Electro thrown in the trash or abandoned in nature, pose a threat to the
environment and human health.
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The correct power supply voltage is indicated by a green LED.
Voltage drop below 320 V or increase above 480 V for at least
one phase or voltage asymmetry above the set value is signaled
by the green LED going off.
Both of the above anomalies (exceeding the voltage threshold,
asymmetry) cause the relay of the device to be switched off and,
as a result, the motor to be disconnected.
Disconnection is carried out with a set delay in order to avoid
accidental shutdowns in case of temporary interferences in the
power supply network.
If the voltage drops below 320 V or rises above 480 V, the discon-
nection is carried out after 1 sec. The countdown to shutdown is
indicated by the green diode flashing.
The relay is switched on again automatically when the correct
network parameters return (voltage hysteresis is approx. 5 V).
If the phase sequence is changed before the sensor causing an
unwanted change of the motor rotation direction, the sensor
will not allow the motor to start (the red LED is on and the relay
is off). Re-activation is possible after the correct phase sequence
has been restored.
Functioning
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Front panel
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Signalling Description
Correct network parameters,
the relay is on
Countdown to switch-on or
switch-off of the relay
(depending on the current
state of the output)
Asymmetry or exceeding of the
voltage threshold. Relay switched
off (voltage value of any of the
phases below 150 V or above
280 V or asymmetry above the
set value)
Incorrect phase sequence.
(The system detected an incorrect
phase rotation sequence
on the input terminals)
Legend:
– green LED; – red LED
Signalling table
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Voltage waveforms
Legend: T1 = 1÷10 sec; T2 = 1÷60 sec
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If a voltage drop below 320 V or rise above 480 V is detected,
the relay will be switched off with a delay of 1s. In this case, both
LEDs will be off. If the phase voltages return to normal values,
the relay will be switched on after T2 time.
If a voltage asymmetry between phases occurs, the relay will be
switched off after T1 time. The green LED [R] will flash until the
relay is switched off (time T1).
If the phase voltages return to normal values, the relay will be
switched on after T2 time. The green LED [R] will flash until the
relay is switched switch (time T2).
If the wrong phase sequence is detected at the input terminals
of the device, the relay will be switched off immediately. The
red LED will be on to indicate a phase sequence error. When the
correct phase sequence returns, the relay will be switched on
with a delay of T2. The green LED [R] will flash until the relay is
switched on (time T2).
1. Check the correct operation of the motor (direction of ro-
tation).
2. Disconnect the power supply.
3. Fix the sensor on a rail in the control box.
4. Connect the phases in sequence to terminals 1, 3, 12.
5. Connect the power supply of the switching contactor coil in
series to terminals 4-5 or 8-9.
6. Set the desired values using the dials.
7. Switch on the power supply.
8. Green LED is on – correct voltage asymmetry and phase vol-
tage value – the motor can be started.
9. Red LED is on – incorrect phase sequence.
10. Disconnect the power supply.
Mounting
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11. Swap the 2 phases (for example, L2 with L3)..
12. Switch on the power supply – the motor can be started.
13. In any other case than those described in points 8 and 9, see
the signaling table (page 4).
Wiring diagram
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The changeover contact of the relay allows to connect
a visual or audible signalling system that informs abo-
ut the relay activation, which means switching off the
motor.
power supply 3×400 V
contact separated 2×NO/NC
maximum load current (AC-1) 2×6 A
power supply control 2×LED
minimum phase voltage 320 V
maximum phase voltage 480 V
voltage asymmetry of activation 20÷80 V
voltage hysteresis 5 V
switch-off delay on asymmetry 1÷10 sec
switch-off delay in case of phase failure 1 sec
switch-on delay 1÷60 sec
power consumption 1.6 W
working temperature -25÷40°C
Contacts configuration
Technical data
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terminal
wire 2.5 mm² screw terminals
cable 2.5 mm² screw terminals
tightening torque 0,4 Nm
dimensions 1 module (18 mm)
mounting on TH-35 rail
ingress protection IP20
The F&F products are covered by a warranty of the 24 months
from the date of purchase. Effective only with proof of purchase.
Contact your dealer or directly with us.
F&F Filipowski sp. j. declares that the device is in conformity
with the essential requirements of The Low Voltage Directive
(LVD) 2014/35/EU and the Electromagnetic Compatibility (EMC)
Directive 2014/30/UE. The CE Declaration of Conformity, along
with the references to the standards in relation to which confor-
mity is declared, can be found at www.fif.com.pl on the product
page.
Warranty
CE declaration
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»Please read the instructions carefully before installation.
»The device should be installed and operated by qualified per-
sonnel who are familiar with its design, operation, and asso-
ciated risks.
»Do not install a sensor that is damaged or incomplete.
»The user is responsible for proper grounding of the system,
proper selection, installation, and efficiency of other devices
connected to the sensor, including safety devices such as over-
current, residual current, and overvoltage circuit breakers.
»Before connecting the power supply, make sure that all cables
are connected correctly.
»It is essential to observe the operating conditions of the sensor
(supply voltage, humidity, temperature).
»To avoid electric shock or damage to the sensor, turn off the
power supply whenever the connection is changed.
»Do not make any changes to the unit yourself. Doing so can re-
sult in damage to or improper operation of the device, which
in turn can pose a threat to people operating it. In such cases,
the manufacturer is not responsible for the resulting events
and may refuse the provided warranty in the event of a com-
plaint.
General work safety conditions
E210416
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