1. Tunnel type mounting
Check if the relay operate in overcurrent
Check the “TEST/RESET” button operation
Check if the wiring is correct (Refer to the wiring diagram).
Set the ‘D-time’ and ‘O-time’ knob to the min. ratings.
When the “TEST” button is pressed under tripped condition, the ‘O.L’
LED is turned off.
When you press the “TEST” button again then the lamp turned off and the
relay reset.
In operation, even though you press the “TEST/RESET” button, the
relay do not trip.
2. Set the operating time (Definite time characteristics)
D-TIME (Delay time) : 0.2~30sec.
The motor starting current, which flows when the motor is starting, is
generally 600~800% of the rated current and the delay time varies
according to the load condition. It is the time during which the relay do not
operate by over-current during the starting time.
Set the delay time by use of the ‘D-TIME’ knob.
In case you do not know the delay time, start the motor by setting the ‘D-
time’ knob to the max. position and after checking the time during which
the starting current become stable, set the ‘D-TIME’ (In general pump, the
setting time is 3-5 seconds)
Note : The time delay is forced time delay type, therefore if you make a
mistake to select the time, the motor may burn.
The operating time is the time during which the relay tripped by the over-
current. The relay is tripped after the selected operating time.
Set the operation time by the ‘O-TIME’ knob.
In special case such as for mechanical shock relay, if you set the ‘O-TIME’
to the min value, the relay is tripped at once.
Generally set it to 4~6 seconds.
3. Set the operating current (Similar to that of the screw type)
Set the operation current to protect from over current. Set the current by
considering the rated current
Start the motor by setting the ‘RC (A)’ knob to the maximum position.
Under operating condition, rotate the ‘RC(A)’ knob to the
counterclockwise until the ‘O.L’ LED turned on & off. The current at this
point is the value (100%) under real load condition.
Rotate the ‘RC(A)’ knob to the clock-wise until the ‘O.L’ LED turned off. In
general case the setting is 110~120% of the rated current.
4. Check the LED condition during the operation
Over current
The relay is not tripped during the ‘D-TIME’ under over-current but the
O.L LED turned on and off to indicate that the over-current flows.
If the relay is tripped after ‘D-TIME’ the ‘O.L’ LED turned on.
Phase failure
If a motor does not rotate under phase failure, the high current may flow.
At this time a motor is protected by the over-current protection function.
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Note :
Note :
Operating & Setting of CSMPA-6OT
CSMPA - 60T
CSMPA - 60TE
TM
12
O-Time Knob
O.L LED
TEST/RESET Button
D-Time Knob
RC(A) Knob
O-Time Knob
O.L. LED
TEST/RESET Button
RC(A) Knob
TM