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Digitax HD M75X Series Installation and Technical Guide
Issue Number: 5
5.3 External 24 Vdc supply requirements for multi axis systems
External 24 Vdc link
For a multi axis system, the installation time and cable requirements can be reduced by using the 24 V links supplied in each multi axis kit. Each kit
includes one 24 Vdc busbar link which provides a quick method of connecting 24 Vdc between 2 drives.
A maximum of 10 drives can be connected together using 24 V links.
Figure 5-7 24 V busbar link (multi axis kit with option module)
•
The 24 Vdc busbar link (
1
) is a push fit connection which should be inserted adjacent to the 24 Vdc supply connector (
2
). The 24 Vdc supply
connector can be fitted to either outermost drive.
If the drive is required to attempt a controlled motor stop during a mains supply loss condition, then the external 24 Vdc must be maintained for at
least as long as the drive remains active.
Calculating the external 24 Vdc supply requirements
The external 24 Vdc supply should be sized using the maximum input current and power demand referenced in Table 5-6, sum currents/power based
on configuration.
The working voltage range of the 24 V power supply is as follows:
NOTE
1
2
NOTE
All frame sizes
Nominal operating voltage
24.0 Vdc
Minimum continuous operating voltage
20.4 V
Maximum continuous operating voltage
28.8 V
Minimum start up voltage
20.4 V
Maximum fuse rating
30 A
Содержание Digitax HD M75 Series
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