Page 348 - Wago_AutomationTechnology_Volume3_2015_US.pdf

750-438
750-438
4 2-Channel Digital Input Module NAMUR, Ex i

346 Proximity sensor acc. to DIN EN 60947-5-6

13 14
Status DI 1 Status DI 2
Data contacts
E1 E2
DI 1 DI 2

A
+

+ +

V V 1 V V 2
750-438
Power jumper contacts
Delivered without miniature WSB markers

The digital input module receives the binary signals from sensors operating in Note: The digital input module must only be operated via Ex i 24VDC power
hazardous environments of Zones 0 and 1. NAMUR sensors, optocouplers, supply!
mechanical contacts or other actuating elements can be connected by means
of approved intrinsically safe devices. General information (e.g., installation regulations) on explosion protection is
The WAGO-I/O-SYSTEM 750 must be installed either in Zone 2 or in a available in the WAGO-I/O-SYSTEM 750 manuals!
non-hazardous area. Each sensor is supplied with a short-circuit-protected
8.2V supply.
LED indicators:
• Green LED (signal on)
Field and system levels are electrically isolated.

Description Item No. Pack. Technical Data
Unit
2DI NAMUR Ex i 750-438 1 Number of inputs 2
Current consumption, system voltage typ.
(5 VDC) 2.5 mA
Voltage via power jumper contacts 24 V DC (provided via Ex-i supply
U O = max. 27.3 V)
8.2 VDC
Sensor supply V V
Signal current (0) ≤ 1.2 mA
Signal current (1) ≥ 2.1 mA
Input filter 3.0 ms
Switching hysteresis 0.2 mA
Open-circuit voltage 8.2 VDC
Input resistance 1kΩ
Accessories Item No. Pack. Input pulse duration ≥ 5 ms
Unit Input pulse separation ≥ 3 ms
Miniature WSB Quick marking system Short-circuit current ≤ 8.2mA
plain 248-501 5 Current consumption, power jumper
with marking see Section 11 contact typ. (24 VDC) 16 mA + load
0.4 W
Power consumption P max.
0.27 W
Power loss P V
Isolation (peak value) U M = 375 V system/supply
Bit width 2 bits (status)