13
Glossary
13-12
*)
Component of the Freelance 2000 System
Profibus data retention
All telegrams have a hamming distance HD=4. Complies with IEC 870-5-
1. Special start/end bit, non-slip synchronization, parity bit and control
byte
Profibus module FI 830F
The Profibus module is a Profibus-DP master according to DIN 19245,
for rapid data exchange with decentralized peripherals (DP) in
manufacturing.
Protective earth
→
Safety grounding
- R -
Rack *
)
Framework for the process station modules; used for the central unit and
the I/O unit(s).
Rack ID *
)
Identification code of the rack. Setable with the coding switch at the link
module back.
→
Coding switch
RAM
Random Access Memory
Read/write working memory of the CPU module or PC central unit. The
CPU module RAM is battery-buffered.
→
CMOS RAM
Rated voltage value
Voltage for which the voltage separation of the module was calculated
and specified. In the final quality control of manufacturing (routine check
test) the modules are submitted for a short time to a much higher test
voltage to assure their insulating property.
→
Test voltage
Real-time clock
When using the AC 800F for the first time, the real-time clock must be
adjusted (set time and date). This data is retained, provided that the
device is battery-buffered. If the possible deviation should be too
important, it is recommended to use a radio clock.
Redundancy
To improve the availability of a process control system, some of its
components like the power supply or CPU can be provided as redundant
units, i.e. twice. If one of them should fail, the redundant unit, which has
been passive up to that moment, takes over the function and, thus,
prevents a total system failure. Redundancy is also implemented for the
AC 800F.
Redundancy link
Point-to-point connection (Ethernet) between Primary and Secondary for
matching the data.
Repeater
Couples two Ethernet segments. The number of possible repeaters on an
Ethernet is limited.
Reset switch
Push-button switch on the AC 800F power supply module
Resets the AC 800F, i. e. initiates a cold start, when pressed for more
than 4 seconds. Mounted recessed. Can only be pressed with a "tool"
(e.g. ball-point pen, paper clip, etc.).
RFI
Radio Frequency Interference
RFI suppression
Measures taken to limit/suppress radio frequency interference from the
Freelance 2000 system which might impair radio services or other units.
Содержание AC 800F
Страница 1: ... PROCESS AUTOMATION Freelance 2019 Mounting and Installation Instructions AC 800F Controller ...
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Страница 66: ...3 Mounting the AC 800F 3 38 ...
Страница 168: ...4 Cabling the AC 800F 4 102 ...
Страница 290: ...7 Functional Description of the Fieldbus Modules 7 36 ...
Страница 317: ...10 Approvals certificates 10 1 10 Approvals certificates 10 1 ISO 9001 Fig 10 1 ISO 9001 ...
Страница 318: ...10 Approvals certificates 10 2 Fig 10 2 ISO 9001 ...
Страница 319: ...10 Approvals certificates 10 3 Fig 10 3 ISO 9001 ...
Страница 320: ...10 Approvals certificates 10 4 Fig 10 4 ISO 9001 ...
Страница 321: ...10 Approvals certificates 10 5 10 2 ISO 9000 Fig 10 5 ISO 9000 ...
Страница 322: ...10 Approvals certificates 10 6 Fig 10 6 ISO 9000 ...
Страница 323: ...10 Approvals certificates 10 7 10 3 CE Fig 10 7 CE certificate page 1 ...
Страница 324: ...10 Approvals certificates 10 8 Fig 10 8 CE certificate page 2 ...
Страница 325: ...10 Approvals certificates 10 9 Fig 10 9 CE certificate page 3 ...
Страница 326: ...10 Approvals certificates 10 10 Fig 10 10CE certificate supplement ...
Страница 327: ...10 Approvals certificates 10 11 10 4 CSA Fig 10 11 CSA certificate page 1 ...
Страница 328: ...10 Approvals certificates 10 12 Fig 10 12 CSA certificate page 2 ...
Страница 329: ...10 Approvals certificates 10 13 Fig 10 13 CSA certificate page 3 ...
Страница 330: ...10 Approvals certificates 10 14 Fig 10 14 CSA certificate page 4 ...
Страница 331: ...10 Approvals certificates 10 15 10 5 UL Fig 10 15 UL certificate ...
Страница 332: ...10 Approvals certificates 10 16 Fig 10 16 UL certificate page 2 ...
Страница 333: ...10 Approvals certificates 10 17 Fig 10 17 UL certificate page 3 ...
Страница 334: ...10 Approvals certificates 10 18 Fig 10 18 UL certificate page 4 ...
Страница 335: ...10 Approvals certificates 10 19 10 6 GUS certificate Fig 10 19 GUS certificate ...
Страница 369: ...13 Glossary 13 18 Component of the Freelance 2000 System ...
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