60 Rockwell Automation Publication 8720MC-RM001K-EN-P - September 2018
Chapter 5 Connect the 8720MC-RPS Unit
For the 8720MC-RPS190 unit, if the total capacitance is above 165,000 μF,
but less than 495,000 μF, if an external resistor connected as shown in
Figure 31
must be provided.
Tab le 18
on page 58 provides the minimum resistance value for the external
precharge resistor (1.5 ohms for the 8720MC-RPS190 unit). The wattage
[W] is determined by the equation presented earlier.
Figure 31 - 8720MC-RPS190 Precharge/Discharge Circuit with and External Circuit
If a totally external resistor network is used as shown in Figure 31, the
calculated wattage, [W] = 17,000 • C farads, is divided in half to size the
precharge and discharge resistors. Parameter F.015 should be set to the sum of
the wattage for both resistors.
Install the Circuit Breaker/Fuse Circuit Protection
To protect the AC input power for single and parallel unit configurations,
install a circuit breaker with supplemental contact (CB) or fuses in the AC
input power line. Refer to Circuit Breaker/Fuse Selection
on page 17 for
recommended circuit protection devices.
Line Reactor
(ACL) Unit
DC Output Fuse
8720MC-RPS190:
380 to 506V AC
L1(R)
L2(S)
L3(T)
L1AUX(R1)
L2AUX(S1)
L3AUX(T1)
PR1
PR2
PR3
P
N
G
CN2
24V3
0V3
SENS
24V2
0V2
MC1
MC2
CN4
MC
RST
PWR
0V
24V
COM
IP
RDY
FR
FR
L4
L5
L6
L1
L2
L3
8720MC-EF-190-VB
EMC Filter Unit
G
1
2
3
1
2
3
CN1
Fan2
PWR
RED
WHT
BLU
RED
Line Reactor (ACL) Unit
FAN2
FAN3
BDSR
B
A
1 2 3 4 5
1 2 3 4 5
CN1 and CN2 of EMC Line Filter
Pin Layout
FMI-1
Board
Fan
R
BL
Y
BR
BR
RED
BLK
YLW
Terminals on Line Reactor
PR4
PR5
PR6
8720MC-RPS Regenerative
Power Supply Unit
A5
B1
B2
B3
B4
B5
A5
B1
B2
B3
B4
B5
A1
A2
A3
A4
B1
B2
B3
B4
B5
A1
A2
A3
A4
B1
B2
B3
B4
B5
MC1
MC2
+24V2
0V2
NC
+24V3
0V3
SENS-out
+24V
A5A5
MC
BLK
YLW
L4
L5
L6
L1
L2
L3
RED
YLW
BLK
BR
BR
L4
L5
L6
L1
L2
L3
RED
YLW
BLK
BR
BR
Fan3
RED
BLK
YLW
PIFS
PIFS
CN2
R1
S1
T1
PRX
PR1
PR2
PR3
DIS
DISR
DIS
MCX
MC
DIS
MCX
PRX
PWR MCX
PRX
Power for Sequence Circuit
Circuit Protection
CN3
Refer to Tab le 1 9 for note information.
Note 4
Note 2
Note 1
Note 3
Note 3
Note 1
Note 4
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