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Spare parts spare parts, the DCS control system of PLC system and the robot system spare parts,

Brand advantage: Allen Bradley, BentlyNevada, ABB, Emerson Ovation, Honeywell DCS, Rockwell ICS Triplex, FOXBORO, Schneider PLC, GE Fanuc, Motorola, HIMA, TRICONEX, Prosoft etc. Various kinds of imported industrial parts

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INTELLIX MO150 transformer

The 369 has an Open RTD Sensor Alarm. This alarm will look at all RTDs that have been assigned an application other than "None" and determine if an RTD connection has been broken. When a broken sensor is detected, the assigned output relay will operate and a message will appear on the display identifying the RTD that is broken. It is recommended that if this feature is used, the alarm be programmed as latched so that intermittent RTDs are detected and corrective action may be taken.

The 369 has an RTD Short/Low Temperature alarm. This function tracks all RTDs that have an application other than "None" to determine if an RTD has either a short or a very low temperature (less than –40°C). When a short/low temperature is detected, the assigned output relay will operate and a message will appear on the display identifying the RTD that caused the alarm. It is recommended that if this feature is used, the alarm be programmed as latched so that intermittent RTDs are detected and corrective action may be taken.

The 369, if connected to a RRTD module, will monitor communications between them. If for some reason communications is lost or interrupted the 369 can issue an alarm indicating the failure. This feature is useful to ensure that the remote RTDs are continuously being monitored

If enabled, an undervoltage trip

 or alarm occurs once the magnitude of either Vab, Vbc, or Vca falls below the running pickup level while running or the starting pickup level while starting, for a period of time specified by the alarm or trip delay (pickup levels are multiples of motor nameplate voltage). An undervoltage on a running motor with a constant load results in increased current. The relay thermal model typically picks up this condition and provides adequate protection. However, this setpoint may be used in conjunction with time delay to provide additional protection that may be programmed for advance warning by tripping. The U/V ACTIVE IF MOTOR STOPPED setpoint may be used to prevent nuisance alarms or trips when the motor is stopped. If "No" is programmed the undervoltage element will be blocked from operating whenever the motor is stopped (no phase current and starter status indicates breaker or contactor open). If the load is high inertia, it may be desirable to ensure that the motor is tripped off line or prevented from starting in the event of a total loss or decrease in line voltage. Programming "Yes" for the block setpoint will ensure that the motor is tripped and may be restarted only after the bus is re-energized. APPLICATION: An undervoltage of significant proportion that persists while starting a synchronous motor may prevent the motor from coming up to rated speed within the rated time. An undervoltage may be an indication of a system fault. To protect a synchronous motor from being restarted while out of step it may be necessary to use undervoltage to take the motor offline before a reclose is attempted.

If enabled, once the magnitude 

of either Vab, Vbc, or Vca rises above the Pickup Level for a period of time specified by the Delay, a trip or alarm will occur (pickup levels are multiples of motor nameplate voltage). An overvoltage on running motor with a constant load will result in decreased current. However, iron and copper losses increase, causing an increase in motor temperature. The current overload relay will not pickup this condition and provide adequate protection. Therefore, the overvoltage element may be useful for protecting the motor in the event of a sustained overvoltage condition.The 369 can detect the phase rotation of the three phase voltage. If the phase reversal feature is turned on when all 3 phase voltages are greater than 50% motor nameplate voltage and the phase rotation of the three phase voltages is not the same as the setpoint, a trip and block start will occur in 500 ms to 700 ms.