8720Mc-Rps Input Power Diagrams - Allen-Bradley 8720MC-RPS065 User Manual

Chapter 5 Connect the 8720MC-RPS Unit
Note Information
1 The three-phase AC input power to terminals L1, L2, and L3 must branch off to control power terminals L1AUX, L2AUX, and L3AUX respectively. In parallel configurations,
the control power phases L1AUX, L2AUX, and L3AUX for the master unit must branch off to terminals L1AUX, L2AUX, and L3AUX of the follower units respectively.
2 We recommend that you install the DC-bus circuit protection on both lines connected to terminals P and N to help prevent ground faults when more than one servo drive
is connected to the 8720MC-RPS unit.
3 Turn ON switches SW7-1 and SW7-2 on the Regulator Board.
4 Circuit breakers and fuses (both) following the three-phase AC line filter are not required. Check your local code to determine if fuses should be used instead of circuit
breakers.
5 The follower circuit breaker must be provided with an auxiliary contact as a safety interlock to the leader. Use fuses with a slightly higher current rating if your local code
requires them.
6 When the 8720MC-RPS unit must comply with CE requirements, install a line filter in the three-phase AC input power line and a single-phase line filter in the power
supply line to the main magnetic contactor.
7 The maximum length for DC-bus wiring is 2.0 m (6.6 ft). Use twisted, shielded, cable.
8 The maximum length for DC-bus wiring is 2.0 m (6.6 ft). We recommend that you use Bus bar for the common bus 1.75 times the total continuous current output of the
8720MC-RPS units.
9 Route wires and cables in the cabinet as short as possible.
10 Make the ground connection from the harmonic filter (terminal E) to ground terminal (G) as short as possible.
11 The physical order of the harmonic filter and varistor relative to the contactor and line reactor in the AC input power line must be installed as shown.
12 Driving current of the sequence input signals is ≤5 mA. So, make sure to use a contact with a minimum applicable load of ≤5 mA.
13 Use the line reactor in maximum surrounding air temperature of 55 degree C (131 degree F) and below.
14
Leader and follower units in the same configuration must be of the same size and series. You cannot mix units of catalog number 8720MC-RPS065 with
8720MC-RPS190 and you cannot mix units of series # with series B. Failure to comply can result in damage to equipment.
15 This connection diagram is only available for AC input drives.
16 When the fan is connected to an external power supply, make sure that the power supply is designated by NEC Class 2 (power supply limited to ≤100 VA and ≤8 A in the
event of a failure). For fan wiring inside the line reactor, see the figure (lower left) and
48

8720MC-RPS Input Power Diagrams

The notes in the following table apply to all 8720MC-RPS065 and
8720MC-RPS190 input power diagrams.
Table 16 - 8720MC-RPS Input Power Diagram Notes
Rockwell Automation Publication 8720MC-RM001K-EN-P - September 2018
Figure 53 on page 115.