nord NORDAC START Series, Руководство пользователя

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2 Assembly and installation
BU 0135 en-4118 49
ATEX zone 22 3D. This also includes connectors and switches that may also not be used in such an
environment.
Control and parametrisation units are basically not approved for operation in ATEX zone 22 3D .
They may therefore only be used for commissioning or maintenance purposes and if it has been
ensured that no explosive dust atmosphere exists.
Designation Part Number Use permissible
Power supply
SK CU4-24V-123-B(-C) 275271108 / (275271608) Yes
SK CU4-24V-140-B(-C) 275271109 / (275271609) Yes
Fuses
SK CU4-FUSE(-C) 275271122 / (275271622) Yes
Wall mounting kits
SK TIE4-WMK-1-EX 275175053 Yes
SK TIE4-WMK-2-EX 275175054 Yes
Adapter kits
SK TI4-12-Adapter kit_63-71-EX 275175038 Yes
SK TI4-3-Adapter kit_80-112-EX 275175039 Yes
2.4.1.3 Commissioning information
For Zone 22 the cable glands must at least comply with protection class IP55. Unused openings must
be closed with blank screw caps that are suitable for ATEX Zone 22 3D (generally IP 55).
The motors are protected from overheating by the device. This takes place by means of evaluation of
the motor PTC (TF) at the device side. In order to ensure this function, the PTC must be connected to
the intended input (Terminal 38/39).
It must also be ensured that the nominal current of the motor has been set.
Overview of required parameter settings:
Parameter Setting value Factory setting Description
P203
Rated motor current
Data according to
rating plate
[xxx]
Setting takes place at the factory side or must
be carried out as per the motor type plate.
P535
I²t motor
According to motor
and ventilation
[0]
The I²t- monitoring of the motor must be
switched on. The set values depend on the
type of ventilation and the motor used. See
B1091-1