Selectable transistor outputs, Ready and brake/drive enabled circuits, Digital output circuit – Rockwell Automation 1398-DDM-xxx ULTRA 100 Series Drives Installation Manual User Manual

Page 73

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Publication 1398-5.2 – PDF 1997

Interfaces

6-9

Selectable Transistor Outputs

OUTPUT 1 and OUTPUT 2 are optically isolated and short circuit
protected, active high, single ended transistor output channels. Each
channel sources a maximum of 50 mA.

READY and BRAKE/DRIVE ENABLED Circuits

Specifications for these outputs are listed in Table 6.6.

Figure 6.10 depicts a typical applications for the BRAKE/DRIVE
ENABLE outputs. Table 6.7 lists the current draw for 24VDC and
90VDC brake coils on Allen-Bradley motors suitable for use with
models 1398-DDM-005 and -005X, 1398-DDM-009 and -009X,
1398-DDM-019 and -019X.

Figure 6.8

READY and BRAKE/DRIVE ENABLED Circuits

J1

Drive

+

-

Normally

Open

Relay

Table 6.6:

READY and BRAKE/DRIVE ENABLED Output Specifications

Parameter

Description

Maximum

ON state resis-
tance

Internal resistance between J1-24 (+) and J1-25 (-) or J1-49 (+) and
J1-50 (-) when the contacts are closed.

1 Ohm

ON state current

Current flow through the relay when contacts are closed.

1 Amp

OFF state current

Leakage current from either output when the relay contacts are open.

0.01 mA

OFF state Voltage Voltage difference between the outputs with open relay contacts.

30 Volts

Figure 6.9

Digital Output Circuit

26

5

24VDC

13

6

I/O COM

I/O Pwr

J1

Drive

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