Mean Well RKP-1U-CMU1, Инструкция по эксплуатации

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1.If Rack Power units is restarted, the parameters of Bus voltage and PSU current you have set will return to the initial/default
◎
To configure a Rack Power power management system, the JK1 ports on the rear of each rack units must be connected together
◎
Only a single RKP-CMU1 unit is allowed to be used in a Rack Power management system.
◎
Do not use the "RKP-1U ON/OFF" function in the Rack Power management system, because this will interfere in RKP-CMU1/
◎
Because of component tolerance, there is a possibility that some of units connected in parallel will reach an overcurrent limit
◎
Connect rack units in parallel before linking to the load. Do not connect rack units to the load separately. Refer to Figure
◎
Use twisted wires for the wiring of +S and S. The twisted wires should not touch the load wires to avoid interference. Refer
◎
A too long cable length might induce a higher amount of noise that affects rack units' proper operation in parallel. To reduce
then overloading the other units when operating at full load condition. If overload conditions happen in parallel usage, it is
suggested that derate the total output current by 10%. For example: RCP-2000-24
×
9 connected in parallel (in 3 racks), the
total output current should be changed to 80A
×
9 unit
×
0.9=648A.
owing to the face that all control and parameter signals of the RKP-CMU1 are integrated into JK1.
RKP-1U-CMU1's proper operation.
3-2 and Figure 3-3.
to Figure 3-2 and Figure 3-3.
the noise, installing termination resistors, an accessory, to the unused JK1 ports is recommended.
2.If PMBus is offline such as RKP-CMU1 shutdown, the parameters of remote ON/OFF control, Bus voltage, and PSU current
3.Using the RKP-CMU1 to reduce PSU current will just limit output current of RCP-2000 units and will not trigger their over-current
4. If PSU current you set is higher than the auto de-rating value of the rack PSU when operating at a low AC input voltage, it will
values, whereas if Rack Power units is connected with a RKP-CMU1 unit, the restarted Rack Power will be loaded the previous
set parameters by the RKP-CMU1 automatically.
you have set will return to the initial/default values.
alarm. Take RCP-2000-48 as an example, the over-current protection threshold is 47A when operating at 230Vac. If you set PSU
trigger the de-rated over-current protection. Take RCP-2000-48 as an example, the over-current protection threshold decreases
by 25%, from 47A to 35.25A, when operating at 100Vac. If you set PSU current to 40A, it will trigger over-current alarm due to
the lower over-current protection threshold (35.25A).
current to 40A, then the maximum output current will be 40A. It is less than 47A, so its over-current alarm will not be triggered.
3.8 Notes on PMBus Monitoring
3.9 Parallel Operation
◎
Internal parallel operation of a rack unit is only suitable for the identical RCP-2000 units, namely units with the same
◎
Under parallel operation, please refer to the user's manual of RCP-2000/RKP-1U for notice of operation and connections
3.9.1 Parallel operation of a single unit of RKP-1U-CMU1
◎
RKP-1U-CMU1 is equipped with the circuit for connecting RCP-2000 units in parallel. Just insert RCP-2000 units into
the rack, then units to be connected in parallel is done.
output voltage and current rating.
of the rest of the functions.
◎
Control parameters
Table 3-9
Adjustable range
00h(OFF) / 80h(ON)
30 ~ 112A
24 ~ 89.5A
12.62 ~ 47 A
12V 12V
-1.5 ~ 2 V
24V 24V
-3 ~ 4 V
48V 48V
-6 ~ 8 V
Tolerance Default
N/A
N/A
N/A
N/A
80h(ON)
±
5A
±
4A
±
2A
89.5A
47A
±
5%
±
5%
± 5%
0V
0V
0V
112A
PMBus command
OPERATION
VOUT_COMMAND
VOUT_TRIM
IOUT_OC_FAULT_LIMIT
Model
ALL
12V
12V
12V
24V
24V
24V
48V
48V
48V
◎ Parallel operation of rack units is only suitable for the identical RCP-2000 units, namely units with the same output
◎ RJ45 cables (CAT.5e, 8P8C) must be used to connect the JK1 ports of each rack units. The recommended maximum
voltage and current rating. Up to three rack units including a RKP-1U-CMU1 and two RKP-1Us (eight RCP-2000 units)
can be connected in parallel, as Figure 3-2 shows.
length is 1m. But if there is a need for extending the cables, the maximum length should not exceed 2m.
3.9.2 Parallel operation of RKP-1U-CMU1 and RKP-1U