Nidec Digitax HD M751 Base - Page 97

Safety information Product information Mechanical installation Electrical installation Multi axis system design Technical data
Digitax HD M75X Series Installation and Technical Guide 97
Issue Number: 5
STEP 3 - Calculate the external 24 Vdc supply requirements, EMC filter required and quantity of Multi axis kits
needed
With reference to Table 5-7 24 Vdc typical input current and power requirements, the external 24 V current demand will be:
Table 5-8 24 V supply requirements for application example
EMC filter
The external EMC filter can be selected by input current rating using the following formula:
Input current (A) = a x P(kW)
2
+ b x P(kW) + c
Where constants a, b and c are given in Table 5-9:
Table 5-9 Input current equation constants
Input current (A) = -0.2 x 9.6
2
+ 6 x 9.6 + 0.5
Input current (A) = 39.67
Suitable external EMC filter (refer to Table 6-37 Optional external EMC filter details on page 113):
4200-3233 (46 A)
Multi axis kits
As both the M753-02400105 and M753-03400160 (axis C and axis D respectively) require SI-option modules and axis A and B do not, the following
multi axis kits are required:
Axis / Model / Option
Typical input current Typical input power
mA @ 24 V W
Axis A - M753-01400042 894 21.5
Axis B - M753-01400042 894 21.5
Axis C - M753-02400105 894 21.5
Axis D - M753-03400160 1039 25
Option module x 2 900 22
Total 4621 111.5
Constant 200 V drives, 3 phase 400 V drives,3 phase 200 V drives, single phase
a -0.55 -0.2 -0.5
b 9.7 6 11
c 0.2 0.5 0
Axis Kit
Axis D - M753-03400160 9500-1048 (Multi axis kit with SI-Option Mounting kit fitted)
Axis C - M753-02400105 9500-1048 (Multi axis kit with SI-Option Mounting kit fitted)
Axis B - M753-01400042 9500-1047 (Multi axis kit without SI-Option Mounting kit fitted)