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Wiring
EMC conditions for ER12-...K/B
C1 EMC category is reached if length of shielded cable is 5 m (16.4 ft) maximum and Switching frequency SFr page 57 is 4, 8 or 12 kHz.
C2 EMC category is reached if length of shielded cable is 10 m (32.8 ft) maximum and Switching frequency SFr is 4, 8 or 12 kHz and if
length of shielded cable is 5 m (16.4 ft) maximum for all other values of Switching frequency SFr.
Internal EMC filter on ER12-...K/B
All ER12-...K/B drives have a built-in EMC filter. As a result they exhibit leakage current to ground. If the leakage current creates
compatibility problems with your installation (residual current device or other), then you can reduce the leakage current by opening the IT
jumper as shown below. In this configuration EMC compliance is not guaranteed.
CAUTION
DRIVE LIFETIME REDUCTION
On ER12-...K/B ratings, if the filters are disconnected, the drive’s switching frequency must not exceed 4 kHz. Refer to Switching
frequency SFr page 57
for adjustment,
Failure to follow these instructions can result in equipment damage.
Normal
(filter connected)
IT system
(filter disconnected)
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