Technical information

32
MITSUBISHI ELECTRIC
MODULAR PLCs
/// MODULAR PLCS
Specifications Q12PHCPU Q25PHCPU
Type Process CPU module
I/O points 4096/8192 4096/8192
CPU self-diagnostic functions CPU error detection, Watch Dog, battery error detection, memory error detection, program check, power supply error detection, fuse error detection
Battery buffer All CPU modules are fitted witha lithium-battery with a life expe ctancy of 5 years.
Memory type RAM, ROM, FLASH RAM,ROM, FLASH
Memory
capacity
overall £ 32 MByte £ 32 MByte
max. for PLC program 124 k steps(496 kByte) 252 k steps (1008 kByte)
Program cycle period 34 ns/log. instruction 34 ns/log. instruction
Dimensions (W x Hx D) mm 27.4 x 98 x 89.3 27.4 x 98 x 89.3
Order information
Art. no. 143529 143530
Q12PHCPU
RS-232
USB
PULL
MODE
RUN
ERR.
USER
B AT.
BOOT
The System Q process CPU allows flexible sys
-
tem design based on off-the-shelf components,
which reduces both initial and implementation
costs. Using either PX Developer / GX Developer
or GX IEC Developer, process applications can be
designed, debugged, monitored and main
-
tained. The MELSEC Process Control system is
best suited for food manufacturing and chemi
-
cal plant applications, where liquid or solid
materials are stored in a tank and a level must be
maintained within a specific range. The Process
CPU combines DCS functions with PLC
operability into one compac t module.
앬
Simplified control and engineering
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Extensive Loop control
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High-speed Loop control
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Improved reliability and serviceability
앬
Hot-swap module replacement in run mode
앬
Works with MELSECNET/H for
multiplex remote I/O system
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Loop Control and sequence control with
one CPU
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Utilisation and expandability
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Use with isolated analog modules, ideal for
process control
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Smoothed analog input value
Specifications Q12PRHCPU Q25PRHCPU
Type Process CPU module ,redundant
I/O points 4096/8192 4096/8192
CPU self-diagnostic functions CPU error detection, Watch Dog, battery error detection, memory error detection, program check, power supply error detection, data tracking
Battery buffer All CPU modules are fitted witha lithium-battery with a life expe ctancy of 5 years.
Memory type RAM, ROM, FLASH RAM, ROM, FLASH
Memory
capacity
overall £ 32 MByte £ 32 MByte
max. for PLC program 124 k steps(496 kByte) 252 k steps (1008 kByte)
Program cycle period 34 ns/log. instruction 34 ns/log. instruction
Dimensions (W x Hx D) mm 52.2 x 98 x 89.3 52.2 x 98 x 89.3
Order information
Art. no. 157070 157071
Q25PRHCPU
MODE
RUN
ERR.
USER
BAT.
BOOT.
PULL
USB
RS-232
TRACKING
BACKUP
CONTROL
SYSTEM A
SYSTEM B
Redundant PLC CPU Modules
Two PLC systems with the same configuration
can provide a hot standby system through auto-
matic synchronisation of data. This is the key to
a redundant system and high availability. Down
time and costs for re-starting are also dramati-
cally reduced. The higher hardware costs for a
redundant system are ne gligible when com-
pared to the reduced costs in c ase of an e rror.
If the control system fails, the standby system
takes over without interruption of the process.
The modular concept allows different stages of
redundancy: Redundant power supply, redun-
dant control systems, redundant network mod-
ules.
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A redundant system with QnPRH consists
mainly of standard components. Existing
hardware can be used.
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Embedding is possible in existing and non
redundant applications
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Short system switching time can be set by
parameters (min. 22 ms, 48 k words)
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Can be programmed like a standard system,
no special software required
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Automatic detection of the control system
with MX-Components/MX-OPC Server.
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The I/O-level can be connected via
MELSECNET/H network (redundant ring),
CC-Link or Profibus. The availability of these
networks can be increased by using redun-
dant master modules .
Automation Book_UK_2008.prn
Automation Book_UK_2008
Dienstag, 8. April 2008 18:18:03
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