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completely shutting down a running system. However, it must
be recognized that removing or inserting an I/O module under
power is potentially hazardous to property and to personnel.
CAUTION: Explosion hazard. Removal and Insertion Under Power
is not supported in Division 2/ Zone 2.
Removal and Insertion Under Power : Potential
Hazards and Recommended Actions
Hazard
Source
Preventive Action(s)
WARNING
Potentially lethal voltages on Terminal
Boards associated with I/O Modules.
Disconnect all signals at
terminal blocks from sources of
power before removing the
terminal block from the I/O
module.
CAUTION
Each signal at each of the terminals
for I/O Modules has a specific
function. Any or all of the signals may
be vital for safely controlling a
process.
Either:
Replacing the power supply
The power supply for the ControlEdge 900 Controller is used in all
Racks. This reduces required inventories of spare parts, and also
simplifies removal and replacement procedures.
Removing the power supply from a rack will remove all DC voltages
from the rack that powers the CPM or EPM, and from all I/O modules
within the rack.
Removing power from the rack has the following consequences:
n
All control action stops
n
All power to all I/O modules in the rack is lost; hence, all control
outputs to the process are lost. Because external power connected
to terminal boards (from or to field devices) is still present, it is
essential that field devices are maintained in a safe condition
during replacement procedures.
n
Control to all I/O rack is lost.
158
Содержание ControlEdge 900 platform
Страница 6: ...6 Contents ...
Страница 12: ...12 Chapter 1 About this guide ...
Страница 52: ...52 ...
Страница 57: ...57 One Slot Rack 1 CPM 1 EPM 1 P S 1 RM ...
Страница 59: ...59 One Slot Rack ...
Страница 62: ...Figure 5 7 Rack dimensions with redundant power supply 62 ...
Страница 75: ...75 c Insert the Ethernet cables and mount the security cover for the EMP ...
Страница 76: ...d Optional mount a wire security seal The user should get a wire security seal themselves 76 ...
Страница 124: ...Figure 5 31 Universal Analog Input Wiring Figure 5 32 Examples of RTD Input Wiring 124 ...
Страница 125: ...125 Figure 5 33 Analog Input Wiring Eight TCs Figure 5 34 Analog Input Wiring Eight Resistance Inputs ...
Страница 136: ...Settings using input 1 as example Single ended factory setting Differential Figure 5 46 Pulse Counting Wiring 136 ...
Страница 137: ...137 Figure 5 47 Pulse Outing Wiring Figure 5 48 Frequency Wiring ...
Страница 138: ...Figure 5 49 Quadrature Differential External Power Wiring Figure 5 50 Quadrature Single Ended External Power Wiring 138 ...
Страница 144: ...Figure 5 57 16 point High Level Analog Input Wiring 144 ...
Страница 147: ...147 Figure 5 60 AC DC Isolated Input Module Wiring ...
Страница 148: ...148 ...
Страница 168: ...168 ...
Страница 178: ...178 Chapter 8 Diagnostics and Troubleshooting ...
Страница 221: ...Appendix A Installing RTP RTP Internal schematic Applies to UAI Figure A 13 Analog Input RTP Internal schematic 221 ...
Страница 222: ...Appendix A Installing RTP 222 ...
Страница 227: ...Appendix A Installing RTP Relay Output RTP Internal schematic 227 ...