Sequence signal terminal block (tb3) – Rockwell Automation 8720MC 8720MC Regenerative Power Supply User Manual User Manual

Page 29

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Sequence Signal Terminal Block (TB3)

As shown in the figure in page 2-14, there is a sequence signal
terminal block (TB3) on the Regulator Board. The following table
provides the information on each terminal of TB3.

Description

Enter the supplemental contact signal (normally open contact) of the main magnetic contactor.*

The reset signal (+24 VDC) is used to reset fault. Close this reset signal as required.*

Enter the RUN signal (+24 VDC)*.

0 V of +24 VDC power.

+24 VDC power (rating : 24 VDC/0.2 Amps).

Common for IP and RDY signals.

This is a contact signal that is turned ON during instantaneous power loss (contact rating : 30 VDC/
50 mA).

This is a contact signal that is turned ON while the unit is ready for operation (contact rating : 30 VDC/
50 mA).

This is a contact signal that opens while fault occurs (contact rating : 250 VAC/1 Amp or 30 VDC/
1 Amp).

Name of Terminal

Sequence Input
Signals

Power for
Sequence Signals

Sequence Output
Signals

Symbol

MC

RST

PWR

0 V

24 V

COM

IP

RDY

FR, FR

MC

MC

24V

8720MC-RPS

4.7K

1K

RST

24V

8720MC-RPS

4.7K

1K

PWR

24V

8720MC-RPS

4.7K

1K

24V

0V

COM

IP

+VC

0VC

IP

4.64K

Load

8720MC-RPS

24V

0V

COM

RDY

+VC

0VC

RDY

4.64K

Load

8720MC-RPS

FR

FR

8720MC-RPS

* Because driving current of sequence input signals
is 5mA and below, use a contact of which
minimum applicable load is 5mA and below.

* Because driving current of sequence input signals
is 5mA and below, use a contact of which
minimum applicable load is 5mA and below.

* Because driving current of sequence input signals
is 5mA and below, use a contact of which
minimum applicable load is 5mA and below.

2-17

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