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575 I/O Module Specification & Pinouts

E-9

SIMATIC 545/555/575 System Manual

E.4 Discrete Relay Output Module

The discrete relay output module (PPX:575–4916) allows the controller to

drive AC and DC loads of various voltage and current ranges. The loads can

be sourcing or sinking. Table E-8 shows module specifications.

Table E-8 Discrete Relay Output Module Specifications

Feature Description

Optical isolation 1500 Vrms

Isolation between commons 1500 Vrms

Isolation between chassis ground and

user circuits

1500 Vrms

Outputs 16

Commons 4

Fuses

One 3 A, 250 V, normal-blow, 5 x 20 mm

fuse per output (16 fuses total).

Replace only with UL/CSA-listed fuse.

Output type Non-latching, unprotected

Type of contact Form A

Operating voltage range

4.5 to 36 VDC

20 to 265 VAC

Maximum off-state leakage current 0.0 mA

Minimum load current per point 10.0 mA

Maximum delay time through module

10 ms, on to off;

10 ms, off to on

Temporary overload

5.0 A for 1 ms

Repetition rate 6 Hz maximum

Coil voltage requirement

24 VDC ±5% (22.8–25.2 V)

+5 V current consumption 0.9 A maximum

±12 V current consumption None

batt

current consumption

(+5 V STDBY)

None

Life cycles (@ 1 Hz repetition rate)

Full rated current

@ 0.5 A

@ 0.1 A

100,000

300,000

1,000,000

Maximum total relay contact resistance:

—at 0.5 A to 2 A load currents = 400 mOhms

—at 10 mA to 0.5 A load currents, use the following equation:

max R (ohms) = ((4.5 V/load current) x 0.05) + 0.15

The relay output module may be damaged if more than one channel is

overloaded at the same time, or if the temporary overload specification is

exceeded.

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