NORD Drivesystems BU0300 - Manual (Page 30)

NORDAC trio SK 300E Manual
30 Subject to technical alterations BU 0300 EN
2.8.3 Commissioning information
The frequency inverter and motor are suitable for use in Zone 22 according to their designation - non-
conductive dusts.
The designation is as follows:
II 3D T125°C
In Zone 22, the cable entries must meet at least protection class IP 55. Unused apertures must be sealed with
blind plugs (minimum protection class IP 55).
The motors are protected against overheating by the frequency inverter. This is implemented by evaluation of
the motor PTC by the frequency inverter. To ensure this function, the digital input 1 must be set to the function
"PTC" (P420 = 13). In addition, it must be ensured that a NORD motor is selected from the motor list (P200).
If a motor from a different manufacturer is used, the motor parameter data (P201 to P207) must be compared
with the motor name plate. In addition, the frequency inverter must be parameterised so that the motor cannot be
operated with a speed greater than 3000 rpm. The "maximum frequency" for a four pole motor must be set to a
value smaller than or equal to 100Hz (P105 ≤ 100). The maximum permissible drive speed of the gears must also
be taken into account here. In addition, the "I²t-Motor" monitoring must be switched on in parameter P535=1.
Necessary parameter settings in overview:
Parameter Setting value Factory setting Description
P105
Maximum
frequency ≤ 100 Hz [50]
This data is based on a four pole motor. Normally,
the value may only be so big that a motor speed of
3000 rpm is not exceeded.
P200
Motor list
Select the appropriate
motor output
[0]
If a NORD motor is used, the preset motor data can
be called up.
P201 –
P207
Motor data
Data as per name plate [xxx]
If a motor from another manufacturer is used, the
motor data on the rating plate must be entered.
P420
Function Dig.
input 1 [13] PTC input [13]
The digital input 1 must be parameterised as the PTC
to ensure temperature monitoring of the motor.
P535
I²t motor
[1] switched on [0] The I²t monitoring of the motor must be switched on.
Note: Details regarding the permissible option modules for hazardous areas (ATEX Zone 22)
with the frequency inverter NORDAC trio SK 300E can be found in Chap. 2.8.2.