HARDWARE MANUAL Document reference MAMPS-HW/E
VM600 machinery protection system (MPS) Edition 18 - March 2022
2-20
RPS6U rack power supply (ABE04x only)
OVERVIEW OF VM600 MPS HARDWARE
2.10RPS6U rack power supply (ABE04x only)
2.10.1 Different versions of the RPS6U rack power supply
In 2016, the RPS6U rack power supply was improved to provide a higher output power of
330 W with higher-performance and higher-efficiency, which required a redesign of the
underlying power supply circuitry.
Accordingly, the different versions of the RPS6U rack power supply in use are:
• Later versions of the RPS6U (PNR 200-582-x00-02h or later) that define the power as a
total maximum output power of 330 W, with nominal output (supply) voltages of
+5 V
DC
up to 50 A, +12 V
DC
up to 8 A and −12 V
DC
up to 4 A.
NOTE: The total maximum output power of 330 W is a combination load for all outputs
as the +5 V
DC
and ±12 V
DC
outputs are usually not simultaneously loaded to
the maximum in practice.
For example, if the +5 V
DC
output is at its maximum rated load (5.35 V × 50 A
= 267.5 W), then the combined loads on the +12 V
DC
and −12 V
DC
outputs
must not exceed 62.5 W.
• Earlier versions of the RPS6U (PNR 200-582-x00-01h or earlier) that define the power
as a rated power of 300 W, with nominal output (supply) voltages of
+5 V
DC
up to 35 A, +12 V
DC
up to 6 A and −12 V
DC
up to 2 A.
The improved RPS6U rack power supply (330 W) can supply a full rack of cards, such as
12 x MPC4/IOC4T card pairs or 12 x XMx16/XIO16T card pairs. This means that a VM600
rack with two RPS6U power supplies (330 W) installed and operating non-redundantly is
usually only necessary for applications where the operating environment requires RPS6U
output power derating. As before, a VM600 rack requires two RPS6U power supplies
installed and operating redundantly for applications requiring rack power supply redundancy.
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
THE LATER VERSIONS OF THE RPS6U RACK POWER SUPPLY (330 W) CAN PROVIDE
SIGNIFICANTLY
MORE CURRENT COMPARED TO THE EARLIER VERSIONS OF THE
RPS6U RACK POWER SUPPLY (300 W), NOTABLY ON THE +5 V
DC
OUTPUT WHICH
CAN
BE UP TO 50 A (COMPARED TO THE PREVIOUS MAXIMUM OF 35 A).
A
CCORDINGLY, LATER VERSIONS OF THE RPS6U POWER SUPPLY (330 W,
PNR 200-582-
X00-02h OR LATER) SHOULD BE USED ONLY WITH LATER VERSIONS OF
THE
VM600 SYSTEM RACK (ABE040 PNR 204-040-100-015 OR LATER, ABE042
PNR 204-042-100-015
OR LATER), AS THESE RACKS HAVE BEEN IMPROVED IN
ORDER
TO SUPPORT THE HIGHER CURRENTS AVAILABLE FROM A 330 W RPS6U
POWER SUPPLY.
F
OR REASONS OF OBSOLESCENCE, EARLIER VERSIONS OF THE RPS6U POWER
SUPPLY
(300 W, PNR 200-582-X00-01h OR EARLIER) IN EARLIER VERSIONS OF THE
VM600 SYSTEM RACK (ABE040 PNR 204-040-100-014 OR EARLIER, ABE042
PNR 204-042-100-014
OR EARLIER) CAN BE REPLACED WITH LATER VERSIONS OF
THE
RPS6U POWER SUPPLY (330 W, PNR 200-582-X00-02h OR LATER) WHEN IT IS
ENSURED
THAT THE LOAD (CURRENT DRAW) ON THE REPLACEMENT RPS6U POWER
SUPPLY
DOES NOT INCREASE. FOR EXAMPLE, THIS CAN BE ENSURED BY NOT ADDING
ANY
ADDITIONAL CARDS TO THE RACK AND BY NOT CHANGING THE CONFIGURATION
OF
THE RACK.
S
EE 8.3.2 CIRCUIT BREAKER AND 8.3.3 SUPPLY WIRING FOR FURTHER INFORMATION.
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