General
UCM-01 and UCM-03 Under Current Monitoring Devices protects devices such as motors, air
conditioners, compressors and resistances for under current conditions. If the measured
current of a motor or a system greater than adjusted undercurrent value, "relay indicator" turns
on and the relay contact would be short circuit. When the measured current falls below
adjusted undercurrent value, relay indicator turns off and relay contact would be released at
the end of the delay time.
Under current Adjustment
Under current value could be set between 0,5 and 5A. It is the
desired under current value for protection of a motor or a system. The hysteresis value is %3.
Start Delay Time Adjustment T(s)
Start delay time could be set between 1 and 6 seconds.
After the motors start to run, they draw high current within a short time. However current could
drop suddenly. To avoid the operation failure during this time, the device would not energize
the relay. After start delay time the current would be measured.
Delay Time Adjustment T(d)
Delay time could be set between 0,5 and 3 seconds.When
the measured current falls below undercurrent value, relay contact would be open circuit after
delay time and motor would be deenergized. If the measured current value exceeds the limit
during this time, delay time would be reset.
Warning Indicators
ON (Power) : Turns on, if the device is powered.
OUT (Relay) : Turns on, if the relay contact is short circuit.
I>Iset : When the measured current falls below adjusted
undercurrent value, LED flashes during delay time(Td). At the end of the delay
time it turns on continuosly.
TECHNICAL DATA
Rated Voltage (Un) : 230 Vac
Operating Range : (0,9 – 1,1) x Un (Un nominal voltage)
Frequency : 50/60 Hz
Current Adjustment Range : UCM-01 ; 0,5 – 5 A
Start Delay Time : 1 – 6 sn
Delay Time : 0,5 – 3 sn
Contact Current : Max.5 A / 240 Vac
Power Consumption : < 4 VA
Device Protection Class : IP20
Ambient Temperature : - 5 °C....+ 50 °C
Connection Type : To connection rail in electrical panel
Dimensions : 35x90x58 mm