Function And Device Design; Function - Stahl 24 V Betriebsanleitung

4

Function and Device Design

Explosion hazard due to improper use!
Non-compliance results in severe or fatal injuries.
• Use the device only in accordance with the operating conditions
• Use the device only for the intended purpose specified in these
4.1

Function

Application range
When installed in a corresponding suitable field enclosure, the 24 V digital input output
module series 9472/35 is permitted for use in hazardous areas where gas or dust are
present in Zone 2 and Zone 22 or in safe areas.
Mode of operation
The 24 V digital input output module series 9472/35 can connect up to 16 non-intrinsically
safe digital signals to the IS1+ Remote I/O system. All channels can be configured as
inputs for NAMUR proximity switches (EN 60947-5-6), 3-conductor PNP proximity
switches (with a 24 V supply) as well as for passive contacts and for solenoid valves
(24 V / 0.5 A) (in pairs with adjustable parameters). The external power supply for
3-conductor proximity switches and solenoid valves comes from a separate terminal on
the front side of the module. Up to 8 inputs can be used as frequency inputs or counters
up to 20 kHz, in the "Rotation direction recognition" and "Forward/backward counter"
operating mode up to 4 inputs. An additional "Plant STOP" control input on the front side
of the module is used to safely switch off all outputs. All inputs and outputs are monitored
for short circuiting and line breakage.
Function-compatible replacement for IS1 I/O module: Series 9470/25,
9471/15 and sometimes 9477/15 (if polarity and switching capacity match).
230244 / 947260310010
2017-02-28·BA00·III·en·00
described in these operating instructions.
operating instructions.
Function and Device Design
DANGER
Digital Input Output Module 24 V
for Ex n Zone 2
Series 9472/35
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