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The fieldbus junction box is used to connect FF H1 and PROFIBUS PA devices to fiedlbus and has the function of terminal matching. When there is no connection at the end of the bus main line and branch line, it can be used as a terminal matcher.
MCAFD4/8 Active Fieldbus Distributor (Junction Box):
1. Bus power supply, suitable for fieldbus conforming to IEC61158-2 standard
2. LED indicators for bus status
3. Short circuit protection and breakdown equipment isolation
4. No effect of other normal working fieldbus devices when installing or uninstalling
5. Low installation cost, simple electric maintenance, waterproof and dust proof of housing joint
6. No polarity of fieldbus input. Not necessary to consider polarity of fieldbus devices
7. Each MCAFD4/8 can connect max 4/8 devices
Product Description
MCAFD4/8 active fieldbus distributor：It's suitable for the FF H1 and PROFIBUS PA fieldbus application. Through the distributor, field devices use the topology of the main - branch to connect the system. Each distributor has four branches. There’s built-in automatic bus terminal. LED status indicator can rapidly diagnosis main line and branch line short circuit state, isolate the fault section automatically. Multiple protection function of the distributor can ensure the safe operation of the system.
MCAFD4 active fieldbus distributor system link diagram:
MCAFD8 active fieldbus distributor system link diagram:
MCAFD4 active fieldbus distributor specifications:
Power consumption | |
No-load current loss | ＜10mA |
Power consumption | ＜180mW |
Main line | |
Number of electrical connectors | 2 |
Electrical connectors | M16*1.5 |
Cable diameter | 4～9mm |
Terminal | Screw type PCB terminal (3-Pin) |
Bus input voltage | 10～32VDC |
Main line max. output current | 1A |
Main line voltage drop | ＜0.3V |
Automatic bus termination | √ |
Branch | |
Num. of electrical connectors | 4 |
Num. of connectable field devices | 4 |
Electrical connectors | M16*1.5 |
Cable diameter | 4～9mm |
Terminal | Screw type PCB terminal (3-Pin) |
Branch input voltage | 9～31VDC |
Branch max. output current | 60mA |
Short-circuit protection current | ＜300uA |
Main and branch voltage drop | ＜1V |
Interface | |
PROFIBUS PA | √ |
FOUNDATION Fieldbus H1 | √ |
Environmental characteristics | |
Working temperature | －40℃～＋85 ℃ |
Storage temperature | －40℃～＋85 ℃ |
Relative humidity | 5%RH～95%RH |
Protection degree | IP65 |
Dimension W x H x D (mm) | 125*57*80 (No electrical connector) |
Weigh | 600g |
MCAFD8 active fieldbus distributor specifications:
Power consumption | |
No-load current loss | ＜15mA |
Power consumption | ＜240mW |
Main line | |
Number of electrical connectors | 2 |
Electrical connectors | M16*1.5 |
Cable diameter | 4～9mm |
Terminal | Screw type PCB terminal (3-Pin) |
Bus input voltage | 10～32VDC |
Main line max. output current | 1A |
Main line voltage drop | ＜0.1V |
Automatic bus termination | √ |
Branch | |
Num. of electrical connectors | 8 |
Num. of connectable field devices | 8 |
Electrical connectors | M16*1.5 |
Cable diameter | 4～9mm |
Terminal | Screw type PCB terminal (3-Pin) |
Branch input voltage | 9～31VDC |
Branch max. output current | 60mA |
Short-circuit protection current | ＜300uA |
Main and branch voltage drop | ＜1V |
Interface | |
PROFIBUS PA | √ |
FOUNDATION Fieldbus H1 | √ |
Environmental characteristics | |
Working temperature | －40℃～＋85 ℃ |
Storage temperature | －40℃～＋85 ℃ |
Relative humidity | 5%RH～95%RH |
Protection degree | IP65 |
Dimension W x H x D (mm) | 250*57*80 (No electrical connector) |
Weigh | 1200g |
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