The JB400 offers spur protection against short circuits (between + and – terminals), limiting the short circuit current in each spur. During a short circuit situation there is no effect in the other spur or the main trunk. There is a LED to indicate short circuits and JB400 has an integrated bus terminator in the models F and P.
In normal operation, each short circuit protector consumes less than 3 mA. After removing the short circuit, the spur goes back to normal operation, the protection circuit is disabled and the LED is dimmed.
Main Characteristics:
- Intelligent Junction Box for fieldbus installations in compliance with the IEC61158-2 standard (PROFIBUS-PA and FOUNDATIONTM fieldbus) and for AS-i networks;
- 4, 6 or 8 spurs;
- Intelligent protection against short circuit in each spur, preventing the short circuit propagation. After removing the short circuit, the spur goes back to normal operation;
- Quick and easy installation;
- Maintenance during operation.
To better serve your application, the intelligent junction box JB400 is available in the following models:
A – For AS-i networks
F – For FOUNDATIONTM fieldbus networks
P – For PROFIBUS-PA networks
Characteristics for AS-I
Physical layer
|
In compliance with AS-i standard
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Power supply
|
34 Vdc
|
Communication protocols
|
AS-i
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Maximum trunk current
|
8 A
|
Quiescent current per spur in normal operation
|
< 3 mA
|
Maximum current per spur during a short circuit
|
280 mA
|
Maximum voltage drop per spur
|
0,3V
|
Number of spurs
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4, 6 or 8
|
Spur connections
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Removable 3-pin terminal blocks, 2.5 mm²
|
Cover closing
|
4 screws with O-ring
|
Housing Material
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Aluminum
|
Mounting
|
Via screws (for panel) or support with pipe clamp
|
Protection degree
|
IP 66
|
Status LED
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On (red): spur in short circuit condition;
Off: spur in normal operation
|
Operation Temperature
|
-20°C to 70°C
|
Storage
|
-40°C to 85°C
|
Humidity
|
0-95% non-condensing
|
Dimensions (mm)
|
180 x 180 x 100
|
Weight
|
1,6 kg
|
Characteristics for Profibus-PA e Fieldbus
Physical layer
|
In compliance with IEC 61158-2
|
Power supply
|
Bus-powered 9 to 32 Vdc
|
Communication protocols
|
Profibus-PA and FOUNDATION fieldbus
|
Maximum trunk current
|
2.5 A
|
Quiescent current per spur in normal operation
|
< 1 mA
|
Maximum current per spur during a short circuit
|
50 mA
|
Maximum voltage drop per spur
|
0.3V@20mA
|
Number of spurs
|
4, 6 or 8
|
Spur connections
|
Removable 3-pin terminal blocks, 2.5 mm²
|
Surge protector at input
|
Cut in 62 V, 1500 W
|
Cover closing
|
4 screws with O-ring
|
Housing Material
|
Aluminum
|
Mounting
|
Via screws (for panel) or support with pipe clamp
|
Protection degree
|
IP 66
|
Terminator
|
100 Ω resistor and 1µF capacitor selectable by switch
|
Status LED
|
On (red): spur in short circuit condition;
Off: spur in normal operation
|
Operation Temperature
|
-20°C to 70°C
|
Storage
|
-40°C to 85°C
|
Humidity
|
0-95% non-condensing
|
Dimensions (mm)
|
180 x 180 x 100
|
Weight
|
1,6 kg
|
|