5.3.2 Forming DC link capacitors
Description
You may have to reform the DC link capacitors if the power module has been stored for more
than one year. When the converter is operational, DC link capacitors that have not been formed
can be damaged.
Table 5-1 The forming duration depends on how long the inverter was stored for
Storage time from the date of manufacture Recommended forming duration
1 – 2 years 1 hour
2 – 3 years 2 hours
>3 years 8 hours
The production date of the power module is coded in the 3rd and 4th digit of the serial number
on the rating plate: "S X ‑- ③ ④ X X X…"
Table 5-2 Production year and month
Digit ③ Year of manufacture Digit ④ Month of manufacture
D 2013 1 ... 9 January ... September
E 2014 O October
F 2015 N November
H 2016 D December
J 2017
K 2018
L 2019
M 2020
Form DC Link of the PM330 power module
The "Forming the DC link" firmware function is only possible for the PM330 power module.
Procedure
Proceed as follows to form the DC link:
1. Set p0010 = 2.
2. Set the forming duration p3380.
For p3380 > 0, with alarm A07391, the inverter signals that at the next on command, DC
link forming starts.
3. Switch on the motor, e.g. from an inserted operator panel.
4. Wait for the forming time to elapse. r3381 indicates the remaining time.
If the line voltage is switched off before forming has been completed, then you must again
form the DC link.
5. The inverter sets p3380 = 0.
6. Set p0010 = 0.
Commissioning
5.3 Preparing for commissioning
Converter with the CU230P-2 Control Units
Operating Instructions, 09/2017, FW V4.7 SP9, A5E34257946B AE 149
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