2 - 18 VM600 MPS hardware manual (standard version) MAMPS-HW/E
Edition 17 - February 2018
RPS6U rack power supply (ABE04x only)
OVERVIEW OF VM600 MPS HARDWARE
In practice, this means that a single RPS6U rack power supply can now supply power to a
VM600 rack full of machinery protection and/or condition monitoring cards under normal
operating conditions. Although, with 12 x processing cards in a VM600 rack, forced-air
cooling is highly recommended.
For an existing VM600 system, it is important to note that simply replacing an old RPS6U rack
power supply (300 W) with a new one (330 W) should not be used as a way to increase the
maximum output power available in order to add more cards to the rack – because the rack
backplane may not support the additional currents involved. If you are considering this,
please contact your Meggitt representative, who will help you to assess how many cards can
be safely added to your system without replacing the rack.
For an existing VM600 system with rack power supply redundancy, it is possible to replace
only one RPS6U rack power supply so that the old (300 W) and new (330 W) versions of the
RPS6U operate together, although it is recommended to replace both in such a case.
2.10.2 Identifying different versions of the RPS6U rack power supply
The different versions of the RPS6U rack power can be visually identified from their panels,
as an LED text label is different.
• For both the AC-input and DC-input versions of the higher-power RPS6U rack power
supply (PNR 200-582-x00-02h or later) that provides 330 W, the text label of the LED
(top) used to indicate the status of the external mains supply is labelled “IN”, as shown
in Figure 2-15 (a).
• For the AC-input version of the original RPS6U rack power supply (PNR
200-582-x00-01h or earlier) that provides 300 W, the text label of the LED (top) used to
indicate the status of the external mains supply is labelled “AC”, as shown in
Figure 2-15 (b).
For the DC-input versions of the original RPS6U rack power supply (PNR
200-582-x00-01h or earlier) that provide 300 W, the text label of the LED (top) used to
indicate the status of the external mains supply is labelled “DC”, as shown in
Figure 2-15 (b).
2.10.3 General overview
The following versions of higher-power RPS6U rack power supply are available:
• RPS6U power supply for use with an external AC-mains supply.
• RPS6U power supplies for use with different external DC-mains supplies.
The different versions are distinguished by their ordering number (refer to the RPS6U rack
power supply data sheet).
The RPS6U rack power supply must be used with an appropriate connection panel mounted
at the rear of the VM600 rack. Several types of these associated rear panels exist
(see 2.10.9 Associated rear panels and refer to the RPS6U rack power supply data sheet) in
order to allow the connection of external AC-mains and/or DC-mains power to the rack.
See also 8.3 Rack safety requirements.
HAZARDOUS VOLTAGES EXIST WITHIN VM600 SYSTEM RACKS (ABE04X).
W
HEN AN RPS6U RACK POWER SUPPLY, ASSOCIATED REAR PANEL OR CARD IS
REMOVED
FROM A VM600 SYSTEM RACK (ABE04X), THE RACK BACKPLANE –
CONTAINING HAZARDOUS VOLTAGES – IS EXPOSED AND THERE IS THE RISK OF
ELECTRIC
SHOCK.
S
EE ALSO HAZARDOUS VOLTAGES AND THE RISK OF ELECTRIC SHOCK ON PAGE XV.
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