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• Single Pump Relay : PM-021N-2 is a device for controlling
the operation of one pump in single-phase and three-phase
electrical systems.
• The operating mode can be selected as Water Supply and
Drainage (Charging and Discharging).
• Capable of level checking for both Water Well and Water Tank
applications.
• Level sensors supported: Electrode / Float Switch /
Pressure Switch.
• Alarm output for Over Flow condition or abnormal supply voltage.
• LED indicators display Level Sensor Fault (S.F.) status of
the Water Well and Water Tank.
• Over and Under Voltage Protection, the relay output will
stop operating if the supply voltage exceeds the preset limits.
• 1 Phase System: Over and Under Voltage, range 80–120% of
Nominal Voltage.
• 3 Phase System: Over and Under Voltage, Phase
Sequence, Phase Loss, range 80–120% of Nominal Voltage.
PM-021N-2 is a Single Pump Relay which control device capable of controlling one water pump to operate in relation to the water level of the Water Well and the Water Tank. In addition, it is equipped with a Voltage Protection function to detect abnormalities in the supply voltage, which may cause pump damage. Both functions operate in conjunction with each other, meaning the supply voltage must be normal for the pump to operate (Relay ON). It is available forboth 1-Phase and 3-Phase systems.
• Single Pump Relay : PM-021N-2 is a device for controlling
the operation of one pump in single-phase and three-phase
electrical systems.
• The operating mode can be selected as Water Supply and
Drainage (Charging and Discharging).
• Capable of level checking for both Water Well and Water Tank
applications.
• Level sensors supported: Electrode / Float Switch /
Pressure Switch.
• Alarm output for Over Flow condition or abnormal supply voltage.
• LED indicators display Level Sensor Fault (S.F.) status of
the Water Well and Water Tank.
• Over and Under Voltage Protection, the relay output will
stop operating if the supply voltage exceeds the preset limits.
• 1 Phase System: Over and Under Voltage, range 80–120% of
Nominal Voltage.
• 3 Phase System: Over and Under Voltage, Phase
Sequence, Phase Loss, range 80–120% of Nominal Voltage.
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