Toshiba H9 Drive Alarms

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Toshiba H9 Drive Alarms

This is a list of the available user-notification codes of the EOI display and provides information that assists the user in the event that a Fault is incurred. The User Notification codes are displayed as an indication that a system function or system condition is active (i.e., ATN, DB, and DBON). The code is displayed on the EOI for the duration of the activation.

An Alarm is an indication that a Fault is imminent if existing operating conditions continue unchanged.

A Trip is a safety feature (the result of a Fault) that disables the H9 ASD system and removes the 3-phase power to the motor in the event that a subsystem of the ASD is malfunctioning, or one or more of the variables listed exceeds its normal range (time and/or magnitude). Included critical items in the trip list are: Current, Voltage, Speed, Temperature, Torque, or Load.

These alarms apply to Toshiba H9 ASD models: VT130H9U2035, VT130H9U2055, VT130H9U2080, VT130H9U2110, VT130H9U2160, VT130H9U2220, VT130H9U2270, VT130H9U2330, VT130H9U2400, VT130H9U2500, VT130H9U2600, VT130H9U2750, VT130H9U210K,VT130H9U212K, VT130H9U4055, VT130H9U4080, VT130H9U4110, VT130H9U4160, VT130H9U4220, VT130H9U4270, VT130H9U4330, VT130H9U4400, VT130H9U4500, VT130H9U4600, VT130H9U4750, VT130H9U410K, VT130H9U412K, VT130H9U415K, VT130H9U420K, VT130H9U425K, VT130H9U430K, VT130H9U435K, VT130H9U440K

• CM1 Comm1 Error -  Internal communications error - Caused by: Improperly programmed ASD, Improper communications settings, Improperly connected cables.
• CM2 Comm2 Error - External communications error - Caused by:  Improperly programmed ASD, Improper communications settings, Improperly connected cables.
• E Emergency Off -  Output signal from the ASD is terminated and a brake may be applied if so configured - Caused by: Stop|Reset pressed twice at the EOI, EOFF command received remotely, ASD reset required.
• MOFF Main Under-Voltage - Under-voltage condition at the 3-phase AC input to the ASD - Caused by: Low 3-phase commercial voltage
• OC Over-Current - ASD output current greater than F601 setting. - Caused by: Defective IGBT (U, V, or W), ASD output to the motor is connected incorrectly, ASD output phase-to-phase short, The ASD is starting into a spinning motor, Motor/machine jammed, Mechanical brake engaged while the ASD is starting or while running, Accel/Decel time is too short, Voltage Boost setting is too high, Load fluctuations, ASD operating at an elevated temperature
• OH Overheat - ASD ambient temperature excessive. - Caused by: ASD is operating at an elevated temperature, ASD is too close to heat-generating equipment, Cooling fan vent is obstructed (see Mounting the ASD on pg. 15 of the service manual), Cooling fan is inoperative, Internal thermistor is disconnected.
• OJ Timer -  Run-time counter exceeded - Caused by: Type Reset required; select Clear run timer
• OLI ASD Overload -  Load requirement in excess of the capability of the ASD. - Caused by:  The carrier frequency is too high, An excessive load, Acceleration time is too short, DC damping rate is set too high, The motor is starting into a spinning load after a momentary power failure, The ASD is improperly matched to the application.
• OLM Motor Overload -  Load requirement in excess of the capability of the motor. - Caused by: V/f parameter improperly set, Motor is locked, Continuous operation at low speed, The load is in excess of what the motor can deliver
• OLR Resistor Overload - Excessive current at the Dynamic Braking Resistor - Caused by: Deceleration time is too short, DBR configuration improperly set
• OP Over-Voltage - DC bus voltage exceeds specifications. - Caused by: ASD attempting to start into a spinning motor after a momentary power loss, Incoming commercial power is above the specified range, Decel time is too short,  Voltage spikes at the 3-phase input; install inductive filter, DBR required, DBR resistance value is too high, DBR function is turned off, Over-Voltage Stall feature is turned off, System is regenerating, Load instability, Disable the Ridethrough function (F302)
• OT Over-Torque - Torque requirement is in excess of the setting of F616 or F617 for a time longer than the setting of F618. - Caused by: ASD is not correctly matched to the application, F616 or F617 setting is too low, Obstructed load.
• POFF Control Under-Voltage - Under-voltage condition at the 5, 15, or the 24 VDC supply - Caused by: Defective Control board, Excessive load on power supply, Low input voltage.
• PtSt Reference Point - Two speed-reference frequency setpoint values are too close to each other - Caused by: Two speed reference frequency setpoints are too close to each other (increase the difference).
• UC Under-Current - With the Low-Current Trip (F610) parameter enabled, the output current of the ASD is below the level defined at F611 and remains there for a time longer than the setting of F612 - Caused by: Output current too low

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