Hardware configuration.
CNC 8070
CENTRAL UNIT FOR CABINET (Q7-A PLATFORM).
7.
Power supply for the module.
·143·
(REF: 1911)
7.4.4 Power supply via UPS.
See "16 CNC-FPS. FAGOR-UPS (Q7-A platform only)." on page 259.
7.4.5 Ground connection.
See "7.8.1 Ground connection." on page 159.
7.4.6 Specs of the power supply.
Power the central unit with an external regulated 24V power supply with the following
characteristics. The power supply must meet the UL1950 standard.
• Output voltage.
24 V DC (between -15% and +20%) and 2 A (including voltage ripple and noise).
• Output current.
The continuous load current must be greater than the current consumed by the CNC (2
A) (at the maximum temperature inside the electrical cabinet - enclosure - where the
power supply is).
• Load fluctuations (including the current peak due to the load).
The output voltage must not exceed the previous limits (20.4 V ÷ 28.8 V), due to load
fluctuations.
• Output voltage holding time after an instantaneous power interruption.
10 ms (for an interruption of 100%) / 20 ms (for an interruption of 50%).
Example of voltage ripple and noise due to the switching power supply.
Noise.
Noise.
Voltage ripple.
Input AC voltage
Output voltage
Output current
0 A
20.4 V
28.8 V
Sudden load
change
Instantaneous interruption.
(100 %) (50 %)
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