750-438 - 2-channel digital input; NAMUR; Intrinsically safe

Note

The digital input module must only be operated with a 24 VDC Ex i power supply!

General information (e.g., installation regulations) on explosion protection is available in the WAGO I/O System 750 manuals!

Number of digital inputs

2

Number of Channels

2

Signal type

NAMUR

Supply voltage (sensor)

8.2 VDC; short-circuit-protected, each channel supplied separately

Sensor connection

2 x (2-wire)

Input characteristic

high-side switching

Input filter (digital)

3

Open-circuit voltage

8.2

Short-circuit current

≤ 8.2 mA

Signal current (0) NAMUR

1.2

Signal current (1) NAMUR

2.1

Switching hysteresis

0.2

Contact resistance (max.)

1000

Input pulse length

5

Input pulse separation

3

Power consumption P_max.

0.4 W

Input data width (internal) max.

2

Intrinsic safety Ex i

yes

Supply voltage (system)

5 VDC; via data contacts

Current consumption (5 V system supply)

2.5

Supply voltage (field)

24 VDC; (Ex i power supply: U_O = max. 27.3 V); via power jumper contacts (power supply via blade contact; transmission via spring contact)

Current consumption, field supply (module with no external load)

16

Power loss P_l

0.27 W

Isolation

300 VAC system/field

Number of incoming power jumper contacts

2

Number of outgoing power jumper contacts

2

Current carrying capacity (power jumper contacts)

1

Marking

ATEX/IECEx: II 3 (1) G Ex ec [ia Ga] IIC T4 Gc; II (1) D [Ex ia Da] IIIC; I (M1) [Ex ia Ma] I

Ex standard

EN IEC 60079-0, -7, -11

Safety-relevant data (circuit)

U_o = 12 V; I_o = 13.5 mA; P_o = 40.5 mW; Linear characteristic curve

Reactances Ex ia IIC

L_o = 190 mH; C_o = 1.4 µF

Reactances Ex ia IIB

L_o = 600 mH; C_o = 9 µF

Reactances Ex ia IIA

L_o = 1 H; C_o = 36 μF

Reactances Ex ia I

L_o = 1 H; C_o = 38 µF

Reactances (note)

Reactances without accounting for the concurrence of capacitance (C_o) and inductance (L_o)

Connection technology: inputs / outputs

8 x CAGE CLAMP^®

Connection type 1

Inputs/Outputs

Solid conductor

0.08 … 2.5 mm² / 28 … 14 AWG

Fine-stranded conductor

0.08 … 2.5 mm² / 28 … 14 AWG

Strip length

8 … 9 mm / 0.31 … 0.35 inches

Width

12 mm / 0.472 inches

Height

100 mm / 3.937 inches

Depth

67.8 mm / 2.669 inches

Depth from upper-edge of DIN-rail

60.6 mm / 2.386 inches

Mounting type

DIN-35 rail

Color

-

Housing material

Polycarbonate; polyamide 6.6

Fire load

0.874

Weight

44.1

Conformity marking

CE

Ambient temperature (operation)

0 … +55 °C

Surrounding air temperature (storage)

-25 … +85 °C

Protection type

IP20

Pollution degree (5)

2 per IEC 61131-2

Operating altitude

0 … 2000 m / 0 … 6562 ft

Mounting position

horizontal (standing/lying); vertical

Relative humidity (without condensation)

95

Vibration resistance

4g per IEC 60068-2-6

Shock resistance

15g per IEC 60068-2-27

EMC immunity to interference

per EN 61000-6-2, marine applications

EMC emission of interference

per EN 61000-6-3, marine applications

Exposure to pollutants

Per IEC 60068-2-42 and IEC 60068-2-43

Permissible pollutant concentration H₂S at a relative humidity < 75%

10

Permissible pollutant concentration SO ₂ at a relative humidity < 75%

25