Manufacturer:
R. Stahl GmbH
Product Name:
9411/21 (Zone 1 Ex i) 9411/24 (Zone 2 Ex i)
Product Description:
FOUNDATION Isolated Device Coupler (FIDC), bus-powered
Profile:
FOUNDATION Device Coupler
More Information:
The Zone 1 and Zone 2 Ex i Field Device Couplers series 9411/21 and
9411/24 connect 4 or 8 intrinsically safe FISCO or Entity FOUNDATIONTM
fieldbus H1 field devices to a non-intrinsically safe high power trunk. A
feedback effect from the spurs on the trunk is prevented in the case of
short-circuits by current limiting (spur protection). The Field Device
Couplers feature a Power Management to minimize current from the trunk:
* during start-up of a fieldbus segment, the Softstart function
activates the spurs one after the other resulting in a significant
lower inrush current
* in the event of multiple short circuits, all short circuited spurs
are de-energized until the failure is eliminated. Even with multiple
short circuits per coupler, the trunk is loaded with max. one short
circuit current at a time.
The cable shields can be connected via capacitive connections at the
terminals or directly at the cable screen bus bar.
The couplers are mounted on DIN rail or in housings made of fiber
glass-reinforced polyester, sheet steel or stainless steel.
Highlights 9411/21 and 9411/24:
- 9411/21 optimized for installation in hazardous locations Zone 1
- 9411/24 optimized for installations in hazardous locations Zone 2 /
Division 2
- Connection of up to 4 or 8 intrinsically safe FISCO or Entity fieldbus
devices to a high power trunk
- Short-circuit protection for each spur
- Reduced inrush current (Softstart) and minimum short-circuit current
through Power Management
- LED indication of faults on each individual spur
- Switchable terminator on board
- Screw or cage clamp terminals, for spurs optionally pluggable
- Customer specific enclosures available in many different versions
- All certified ATEX, IECEx, FM, cFM, GOST-R, GOST-K, GOST-B, INMETRO
- Segment engineering tool "Fieldbus Wizard" available free of charge
from the website.