PM861 / PM861A and TP830 Process Units

Main Features

• MPC860 Processor: Operates at 48 MHz.
• Memory: 16 MB RAM with internal and external battery backup.
• ModuleBus Connection: Direct connection to 12 x S800 I/O units.
• Integrated Ports:
  • CN1 + CN2: Ethernet ports (IEEE 802.3, 10BaseT)
  • COM3: Serial port (RS-232C) supporting modem functionality
  • COM4: Serial port (RS-232C) for service functions
• Additional Communication Protocols: Achieved through expansion communication interface modules.
• Redundancy Solution: Uses Redundancy Control Link.
• Compact Flash Storage Card: Used for application and cold-start retention data storage.

Basic Technical Data

• Memory:
  • 2 MB flash PROM (stores firmware)
  • 16 MB SDRAM
• Power Consumption:
  • 6 W typical
  • 11 W typical (including all ModuleBus and CEX Bus power)
• Current Consumption:
  • 250 mA typical (430 mA maximum) (excluding ModuleBus and CEX-Bus power)
• Power Input Terminals: 4-pole, screw-tightened terminals, L+, L–, SA, and SB.
• Power Requirements:
  • Input design L+ and L–, 24 V nominal, fluctuation range between 19.2V DC and 30V DC.
• Redundant Power Supply Status Input:
  • Input design SA, SB
  • Maximum input voltage 30 V
  • Minimum high-level input voltage 15 V
  • Maximum low-level input voltage 8 V
• Power Backup: The process unit has an internal 5ms power backup capability, sufficient for the CPU to handle power failure conditions.
• Protection Class: IP20 in compliance with EN60529, IEC 529.
• Weight:
  • 1200 g (2.6 lb) (package PM861K01)
  • 2800 g (6.1 lb) (package PM861K02)
• Dimensions: W 119 x H 186 x D 135 mm (4.7 x 7.3 x 5.3 in.)

Battery Technical Data

• Backup Time:
  • PM861:
    • Internal Battery: Minimum 36 hours
    • External Battery SB821: Minimum 3 weeks
    • External Battery SB822: Minimum 85 hours (fully charged)
  • PM861A:
    • Internal Battery: Minimum 118 hours
    • External Battery SB821: Minimum 12 weeks
    • External Battery SB822: Minimum 285 hours (fully charged)

Electromagnetic Compatibility and Electrical Safety

• Compliance: PM861/TP830 comply with EMC Directive EMCD 2004/108/EC technical specifications.

Performance Data

The PM861 controller operates independently with performance equivalent to the PM860 controller. When configured redundantly, the execution performance is slightly slower than non-redundant configurations. The switchover time between master and slave controllers in a redundant setup is typically less than 10ms.