A05006 — Power unit: Overtemperature thermal model

A05006 is the alarm Power unit: Overtemperature thermal model. It reports that the temperature difference between the chip and the heat sink of the power unit has exceeded the permissible limit value — a monitoring that, as the manuals state, exists on blocksize power units only. Which overload response the drive then initiates depends on p0290 (Power unit overload response). The drive's configuration decides whether the condition is output only as this alarm or also with no reaction (N). The current power unit temperatures can be observed at r0037.

• The temperature difference between the chip and the heat sink has exceeded the permissible limit value; the manuals limit this monitoring to blocksize power units.
• On the G120XA the manual additionally names a second trigger for this alarm: the voltage measurement does not supply any plausible values and is not used. For this it cross-refers to A05065 (Voltage measured values not plausible).

1. No remedy is necessary: the manuals state that the alarm disappears automatically once the limit value is undershot.
2. Bear in mind the manuals' note: if the alarm does not disappear automatically and the temperature continues to rise, this can result in fault F30024.
3. G120XA only — the manual specifies that the following parameterization must be made in order to deactivate the alarm: deactivate voltage measurement (p0247.0 = 0), deactivate flying restart with voltage measurement (p0247.5 = 0) and deactivate fast flying restart (p1780.11 = 0).

• The S120/S150 and G130/G150 manuals print no message value for this alarm.
• The G120XA manual outputs an alarm value in r2124 and decodes it bitwise binary: Bit 1: Phase U, Bit 2: Phase V, Bit 3: Phase W.

• p0290 — Power unit overload response: decides which overload response the drive initiates when this alarm is raised.
• r0037 — CO: Power unit temperatures / PM temperatures: the power unit temperatures that this alarm's cause references; read them to follow the chip/heat-sink behaviour.
• r2124 — Alarm value: carries the alarm value; on the G120XA it is interpreted bitwise binary with the phase bits.
• p0247 — Voltage measurement configuring: on the G120XA, p0247.0 = 0 deactivates voltage measurement and p0247.5 = 0 deactivates flying restart with voltage measurement when the alarm is to be deactivated.
• p1780 — Motor model adaptation configuration: on the G120XA, p1780.11 = 0 deactivates fast flying restart.

According to the manuals, no measures and no acknowledgement are necessary: the alarm is withdrawn automatically once the limit value has been fallen below. Only if the temperature continues to rise does the condition escalate to fault F30024.