Siemens Simatic M7-400 Manual do Utilizador descarregar pdf (Página 189)

100

101

Digital Modules

4-67

S7-400, M7-400 Programmable Controllers Module Specifications

A5E00069467-07

Technical Specifications of the SM 422; DO 16 20-125 VDC/1.5 A

Dimensions and Weight

Dimensions W H D

(in millimeters)

25 290 210

Weight Approx. 800 g

Data for Specific Module

Number of outputs 16

Length of cable

• Unshielded

• Shielded

Max. 600 m

Max. 1000 m

Voltages, Currents, Potentials

Rated load voltage L1

• Reverse polarity protection

20 VDC to 138 VDC

Yes, with fuse

Total current of the outputs

Up to 40 C

Up to 60 C

With fan subassembly

Max. 16 A 21 A

Max. 8 A 14 A

Isolation

• Between channels and

backplane bus

Yes

• Between the channels

In groups of

Yes

Permitted potential difference

• Between the outputs of the

different groups

250 VAC

Insulation tested with 1500 VAC

Current consumption

• From the backplane bus

• From load voltage L +

(without load)

Max. 700 mA

Max. 2 mA

Power dissipation of the

module

Typ. 10 W

Status, Interrupts, Diagnostics

Status display Green LED per

channel

Interrupts

• Diagnostic Interrupt Parameters can be

assigned

Diagnostic functions Parameters can be

assigned

• Group error display

– For internal fault Red LED (INTF)

– For external fault Red LED (EXTF)

• Diagnostic information

readable

Yes

Substitute value can be applied Yes, programmable

Data for Selecting an Actuator

Output voltage

• At signal “1” Min. L+ (–1,0 V)

Output current

• At signal “1”

Rated value 1.5 A

Permitted range 10 mA to 1.5 A

Permitted surge current Max. 3 A

(for 10 ms)

• At signal “0” (leakage

current)

Max. 0.5 mA

Output delay (for resistive load)

• From “ 0” to “1” Max. 2 ms

• At “1” to “0” Max. 13 ms

Parallel connection of 2

outputs

• For redundant triggering of

a load

Possible (only outputs

of the same group)

• To increase performance Possible (only outputs

of the same group)

Triggering a digital input Possible

Switch rate

• For resistive load Max. 10 Hz

• For inductive load

to IEC 947-5-1, DC 13

Max. 0.5 Hz

Short-circuit protection

of output

Electronically

protected

• Threshold on Typ. 04 A to 5 A

Replacement fuses Fuse, 8 A/250 V, quick

blow

To achieve maximum performance capability,

distribute the high-current load between the two

groups.

To reset a deactivated output,

first set the output signal to 0 and then to 1.

If output signal 1 is written to a deactivated

output and the short circuit remains, additional

interrupts are generated (provided the diagnostic

interrupt parameter was set).

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