Lenze 8200 Frequency inverters - Manual (Page 82)

Installation
8200SHB0199 4-25
4.2 Electrical installation
For information on the installation according to EMC, see chapter 4.3.
4.2.1 Operator’s safety
Danger!
All power terminals remain live up to 3 minutes after mains disconnection.
Labelling of the r.c.c.b. Meaning
AC-sensitive residual-current circuit breaker (RCCB, type AC)
Pulse-current sensitive residual-current circuit breaker (RCCB, type A)
All-current sensitive residual-current circuit breaker (RCCB, type B)
Definition In the following text “RCCB” is used for “residual-current circuit breaker”.
Protection of persons and
animals DIN VDE 0100 with residual-current operated protective devices (RCCB):
- The controllers are internally equipped with a mains rectifier. In the event of a short circuit to
frame a smooth DC fault current can block the activation of the AC sensitive or pulse-current
sensitive r.c.c.b. and thus eliminate the protective function for all units connected to this r.c.c.b.
We therefore recommend:
- ”Pulse-current sensitive r.c.c.b.” in systems with 820X controllers (L1/N).
- ”All-current sensitive r.c.c.b.” in systems with 821X/822X/824X controllers (L1/L2/L3).
Rated fault current Please observe the rated fault current for the selection of the r.c.c.b.
The r.c.c.b. may be activated unintentionally by
- capacitive leakage currents between the cable screens (especially with long screened motor
cables),
- simultaneous connection of several controllers to the mains,
- using RFI filters.
Installation The r.c.c.b. must only be installed between the supplying mains and the controller.
Note about the use of
all-current sensitive r.c.c.b. - All-current sensitive r.c.c.b. are described for the first time in the European standard EN 50178
(version October 1997). The EN 50178 has been harmonised and has been effective since
October 1997. It replaces the national standard VDE 0160. The r.c.c.b. are also described in the
IEC 755.
- R.c.c.b. with a rated fault current of
- 30 mA are only suitable for systems with 820X controllers,
- 300 mA are only suitable for systems with 821X/822X/824X controllers.
Electrical isolation /
protection against contact The control inputs and outputs of all controllers are mains isolated. Please observe the terminal
description of the different controllers.
Replacement of defective
fuses Replace defective fuses with the prescribed type only when no voltage is applied.
- For single drives, the controller carries a hazardous voltage up to three minutes after mains
disconnection.
- In DC-bus operation, all controllers must be inhibited and separated from the mains.
Separate controller from the
mains Make a safety disconnection between the controller and mains only via a contactor at the input side.
- Ensure that all controllers connected to the DC-bus are inhibited.
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