Specifications

Comfort Reference Value – 5th Generation of STÖBER Inverters STÖBER
ANTRIEBSTECHNIK
11. Used Parameters
KSW-239
Z.. Fault counter
Par. Description Fieldbus-
address
Z32
Global
read (3)
Short/ground internal: The parameter indicates how frequently event 32:Short/ground internal
has occurred.
Event description:
Trigger: An internal check is performed when the inverter is enabled. An existing short
circuit will cause a fault.
Cause: • An internal device error exists.
Level: Fault
Acknowledgment: Turn device off/on or programmed acknowledgment
Other: The motor always coasts down.
Fieldbus: 1LSB=1; Type: U16; USS-Adr: 1A 08 00 00 hex
5220h 0h
Z33
Global
read (3)
Overcurrent: The parameter indicates how frequently event 33:Overcurrent has occurred.
Event description:
Trigger: The total motor current exceeds the permissible maximum.
Cause:  Acceleration times too short
 Wrong torque limitations in parameters C03 and C05
Level: Fault
Acknowledgment: Turn device off/on or programmed acknowledgment.
Other: The motor always coasts down.
Fieldbus: 1LSB=1; Type: U16; USS-Adr: 1A 08 40 00 hex
5221h 0h
Z34
Global
read (3)
Hardware fault: The parameter indicates how frequently event 34:Hardware fault has occurred.
Event description:
Trigger: A hardware error occurred.
Cause: 1: FPGA; error while loading the FPGA.
2: NOV-ST; control unit memory defective (FERAM).
3: NOV-LT; power unit memory defective (EEPROM).
10: ST <-> LT; power unit serial number does not match. requirement in control
unit.
11: CurrentMeas; current offset measurement when device starts up - deviation
too great
Level: Fault
Acknowledgment: Cannot be acknowledged
Other: The inverter must be sent in for repairs.
Fieldbus: 1LSB=1; Type: U16; USS-Adr: 1A 08 80 00 hex
5222h 0h
Z35
Global
read (3)
Watchdog: The parameter indicates how frequently event 35:Watchdog has occurred.
Event description:
Trigger: The watchdog of the microprocessor has triggered.
Cause: • The microprocessor is busy or it is faulty.
Level: Fault
Acknowledgment: Turn device off/on or programmed acknowledgment.
Other: The motor always coasts down.
Fieldbus: 1LSB=1; Type: U16; USS-Adr: 1A 08 C0 00 hex
5223h 0h
Z36
Global
read (3)
High voltage: The parameter indicates how frequently event 36:High voltage has occurred.
Event description:
Trigger: The voltage in the DC link exceeds permissible maximum
(indication DC link voltage in E03).
Cause:  Network voltage too high
 Feedback of drive in braking mode (no brake resistor connected brake
chopper deactivated with A20=inactive or defective).
 Brake resistor too low (overcurrent protection)
 Ramp too steep
Level: Fault
Acknowledgment: Turn device off/on or programmed acknowledgment.
Other: The motor always coasts down.
Fieldbus: 1LSB=1; Type: U16; USS-Adr: 1A 09 00 00 hex
5224h 0h