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The parameters can be changed with the keypad according to the
instructions provided in the converter manual. Insert the keypad plug in the
test socket of terminals 5-6-15-16.
The keypad is not approved for use in the area subject to explosion risk.
Operating on unearthed network (IT)
Motors with an incorporated CEIGL ... IT type frequency converter can be
operated on the IT network. In case of a short circuit in the drive the tripping
must take place as quickly as possible.
Explosion protection
The explosion protection is ensured in all conditions, since the motor and
converter are to be monitored by the PTC temperature sensors (ÎSection
"Motors for operating on frequency converters
" , page 26). In the case of
motors with incorporated frequency converter equipped with a PTC tripping
device and relay, said protection is provided for without external tripping.
All the screws are to be tightened to the envisaged torque (Î Table 4,
page 17) and just as many screws as necessary for the envisaged fastening
boreholes are provided. Any damaged screws are to be replaced only with
screws of the same dimensions and quality (at least 8.8).
Relay and PTC tripping device
Motors with incorporated frequency converters can be equipped either with a
relay or a PTC tripping device to ensure protection against overheating as
required by IEC 60079-14. The PTC tripping device is accessible by means
of a hexagon locking screw (SW 67) on the upper face of the pressure-
resistant casing. The locking screw must be completely screwed in during
operation and is to be secured with anaerobic adhesive for screws.
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