Yokogawa ALP121-S01 PROFIBUS-DP Module — Industrial Interface

Yokogawa ALP121-S01 PROFIBUS-DP Communication Module

The Yokogawa ALP121-S01 gives fast and stable PROFIBUS-DP links. It fits control racks and field networks. The module comes new in factory packing. The unit carries a 12-month factory warranty.

Quick Facts

• Brand: Yokogawa
• Model: ALP121-S01
• Type: PROFIBUS-DP Communication Module
• Condition: New, factory packed
• Warranty: 12 months factory warranty
• Delivery: FedEx, UPS, or DHL

Suffix Code Tree

• Model: ALP121
  • -S : Standard type
  • 0 : Always 0
  • 1 : With ISA Standard G3 option

Core Technical Specifications

• Interface: PROFIBUS-DP using RS-485 physical layer
• Connection: EIA-RS-485 compliant, D-Sub 9 pin (female)
• Ports: One communication port per module
• Speed: 9.6 kbps up to 12 Mbps for fast cycle times
• Max Distance: 1.2 km at 9.6 kbps; typical 1000 m at 1.5 Mbps
• Isolation: Field-to-system galvanic isolation, 1500 Vrms rated
• Max Current: 0.7 A typical consumption
• Weight: 0.3 kg
• Operating Temp: -20°C to +60°C for reliable field use
• Storage Temp: -40°C to +85°C
• EMC Immunity: Meets industrial EMI and surge standards
• Error Detection: Hardware CRC support for frame checks
• Bus Topology: Supports line, repeater, and star via repeaters
• Supported Slaves: Up to 125 nodes per PROFIBUS segment
• Latency: Low propagation latency for tight control loops

Added Technical Values (Extended)

• Isolation Voltage Test: 1500 Vrms for one minute
• Burst Immunity: ±2 kV per IEC 61000-4-4
• Surge Protection: ±1 kV on field lines
• MTBF Estimate: 100,000 hours at 25°C (industry estimate)
• Connector Life: ≥500 mating cycles for D-sub 9

Product Selling Points

• Easy integration with standard PROFIBUS masters and slaves
• Strong isolation protects controllers from field faults
• Wide speed range adapts to legacy and fast systems
• Compact, light module fits tight cabinet spaces
• Factory new units come in sealed packing for reliability

Installation Tips

• Use proper RS-485 termination at segment ends
• Keep cable runs away from high power lines for less noise
• Use repeaters for segments longer than 1.2 km
• Verify node addressing before commissioning the bus

Shipping & Packaging

• Ships via FedEx, UPS, or DHL as chosen by customer
• Packed in anti-static foam and sealed factory box
• Includes installation quick guide and warranty card

FAQ

• Q: How do I wire the ALP121 to a PROFIBUS cable?
  A: Connect A/B to RS-485 pair, shield to earth, and add termination resistors at ends.
• Q: Can I use this module with repeaters?
  A: Yes. Use PROFIBUS repeaters to extend segments and isolate faults.
• Q: Does ALP121 support online diagnostics?
  A: Yes. It provides link and error LEDs and supports bus error reporting.
• Q: What cable type do you recommend for long runs?
  A: Use twisted pair, 120 Ω PROFIBUS-rated cable with proper shielding.
• Q: How many modules can one rack hold?
  A: Rack capacity depends on system backplane and available slots.

Contact & Ordering

• Email: sales@powergearx.com
• WhatsApp: +86 18030005825
• For quotes and stock checks contact our sales team above

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